Replacing sash windows not only affects the look and character of your building, it is also extremely expensive and potentially damaging to the structural integrity of the building itself.
On top of this, replacing original sash windows can be incredibly wasteful. The high-quality wood that forms the basis of original timber windows is extremely hard to come by these days, meaning that the replacement and eventual discarding of these frames would be an unnecessary waste.
Not only that, but plastic double glazing tends to only have a useful life of around twenty years or so. After this they often end up as landfill, consuming vast amounts of energy in their production to become waste. As we enter an era of ever-scarcer resources and climate uncertainty, reducing waste and energy consumption is of paramount importance.
There are three different options for original sash and case, and single glaze windows.
3 Steps to Perfect Windows
The first option is to restore the windows. This involves 1) the replacement or repair any damaged wood in the windows; 2) ensuring that the windows are fully operational and able to open and close, removing, weighing and cleaning the windows, while allowing for cleaning access; and 3) to replace and restore any ironmongery on the frames. Most restoration companies only restore the windows, they do not paint them.
The second option is to draughtproof the windows. This involves removing the windows and mitring out a channel around all surfaces of the window, before putting in a draughtproofing brush; then putting the windows back in place and affixing optional beading around the existing window. This is quite an invasive process. It can weaken the base of the window as it involves putting in dowels, and over a relatively short number of years this can make the lower sill weaken and come away.
The second option is to add InvisiSeal™. InvisiSeal™ is a liquid draughtproofing product that dries like rubber, creating an airtight seal around your windows and doors. It’s a non-invasive process which involves no screws or nails, keeping your window frame fully intact and strengthened. This allows you to fully open and close the windows while enjoying the benefits of draughtproofing.
The third part is to make your windows thermally efficient; this means that the whole window area becomes thermally efficient and repels heat back into the room in the same way that the other surfaces in the room will. There are many different options. The first option is to remove the single glazing and replace it with double glazing; however this must be used with some form of draughtproofing. The second option would be to retain your original windows and install secondary glazing.
Over time, a build-up of paint can just your windows to become stiff, or even make it impossible to open your windows at all. By removing the many layers of paint, your windows can experience a new lease of life. Equally, cracked and flaky paints and finishes can cause the wood of windows to become exposed to the elements. By restoring the paintwork, you windows will have a protective finish that ensures they last for years to come.
Sash windows are counter balanced with two pairs of weights which run over a pulley system. Over time, the cord that supports these weights can become weakened, or even snap entirely. A weakened or snapped cord will make it difficult to open and close your windows. Replacement of the cord allows your windows to move freely once more.
Repair/Replacement of Rotten Wood
Original windows are features that add period charm to your property. The downside to this is that the original wood can become rotten or otherwise comprised. A thorough restoration service will delicately and sympathetically repair and replace areas of rotten frame, ensuring your window stands the test of time. From time to time, this may include the replacement of the entire window frame, although this is often a last resort.
The final element of your window restoration is the installation of elegant yet practical ironmongery in keeping with the look of your windows. Standard finishes tend to be in brass or polished chrome. This step can really enhance the finish of your window restoration. However, be aware that some companies will remove your original ironmongery and replace it with shiny new ironmongery: always inform your window restorers if you wish to retain your original ironmongery.
Window Restoration Specialists
There are many window restoration companies out there, so how do you know who to trust? As bespoke magnetic secondary glazing experts, we often come across the work of window restoration companies. The consistency of work and professionalism across the board can vary wildly. We’d always recommend that you obtain testimonials, or better yet, personal referrals.
Restoration of your original widows is not just about mending your existing windows. Certain additions can be retrofitted to your original windows in order to increase their efficiency, and your comfort. Draughtproofing is one of the most important aspects of the window enhancement process.
Draught-proofing brush strips can be added during your window restoration in order to fill the gaps that surround your windows. These lasting brushes ensure that your windows are sealed while still allowing for adequate ventilation. Adding draught-proofing to your windows and doors can save up to £50 per year; not surprising when you consider that the gaps around your sash windows can be the equivalent of an opening measuring a minimum of ten inches.
InvisiSeal™ is a patented permanent liquid draught excluder exclusive to Glaze & Save. For doors and windows, made from a tough, flexible silicone, InvisiSeal™ protects like silicone with all of the durability and flexibility of rubber. Typically reduces draughts by over 50%. Reduces energy bills by up to 20%.
3. Thermal Efficiency
While window films and draught-proofing brushes are excellent at reducing draughts from your windows, the overall energy efficiency of your windows will remain unchanged. For example, if you have original single glazing, you can expect the U-values of your windows to remain at around 5.5. This means that you could be losing heat up to 16 times faster through your window than through your walls. To tackle the U-value of your windows, while addressing a host of other issues such as condensation or fading, it pays to look into further glazing options that you can add to your windows.
Window film can be the ideal inexpensive solution to temporarily enhance the thermal efficiency of your home. Window films can come in a variety of finishes, many with exceptional thermal properties. InvisiFilm™, our convenient and discrete window film, is a stylish alternative to net curtains or patterned glass. Combating a host of window-related issues, whether you require extra solar protection, to changing up those net curtains, InvisiFilm™ can offer up a solution.
Secondary glazing involves installing supplementary glazing on the inside of an existing single-glazed window.
Unfortunately, traditional secondary glazing is expensive giving a long payback time; it uses screws and there is a requirement to redecorate after installation. Ugly, plastic frames go yellow over time and are not always compatible with listed buildings or conservation areas. It can also be potentially hazardous, as the plastic frame become brittle over time, placing the glass in a precarious position. It also ultimately damages the window frame and surrounding area, making it bulky and unsightly.
You can maintain the look and character of your windows by choosing a secondary glazing option which is virtually invisible whilst given all of the benefits (and more) of double glazing. Bespoke magnetic secondary glazing InvisiTherm from Glaze & Save is an innovative polycarbonate solution that reduces heat loss, noise pollution, eliminates fading, draughts and condensation with a guaranteed payback and energy bill reduction of 22.5%.
Back in 1988, Peter Morrison, Minister of State for Energy said: "In future, the most profitable developments will be those that have been designed with energy efficiency in mind. Building energy efficiency into a new building need not increase its cost, but it can increase its profitability."
Mr Morrison was not wrong and it goes virtually without saying that one of the easiest ways to make you business more profitable is to carry out energy efficiency measures such as draught proofing. We're pretty daft about draught proofing here , so without further ado, we look at five benefits of draught proofing your workplace.
1. Save money on energy bills
The biggest benefit of draught proofing for the canny business owner is without a doubt the savings one can achieve on energy bills. Adequately draught proofing a building can reduce energy bills by around 15%: a major saving in these economically challenging times. Draught free properties are even warmer at colder temperatures: allowing you to turn down the thermostat and potentially save even more money on your energy bills.
2. Improve sound insulation
We’ve written extensively about how noise pollution can be hazardous to your health and your bottom line, but did you know certain draught proofing measures such as InvisiSeal can reduce noise by around 10dB? Draught proofing is often overlooked as a measure of reducing noise, however it can be extremely effective given its ease of installation and discreteness.
3. Create greater comfort for employees
You and your employees could be spending as much as three quarters of your waking hours at work. It is therefore vital that the working environment is comfortable and safe. We have written about some easy office upgrades to increase employee comfort here , but it goes almost without saying that creating a draught free office creates a greater degree of thermal comfort and fewer distracting draughts is a simple way of creating a better workplace for your employees. And happy employees means greater productivity and loyalty.
4. Short payback times compared to other measures
Some of the great and the good in energy efficiency measures have exceptionally long payback times. While making those long term investments is always a good call if you have a long lease or own your own commercial premises, those without long leases or who simply want to start seeing energy savings quickly would benefit from the short payback times provided by draught proofing. Glaze & Save InvisiSeal has a payback time of around 3-5 years, which is extraordinarily low in the grand scheme of things. And remember, the quicker the payback time, the quicker your profit margins increase.
5. Cleaner, less polluted workplace
One of draught proofing’s lesser known qualities is its ability to reduce weather borne moisture, dirt and pollution from making its way into your work place. The physical barrier provided by an innovative draught proofing product such as InvisiSeal means that dirt and pollution stay outside where they belong, giving you a cleaner and healthier work place.
Contact us on 01738 562068 or email email@example.com to find out more bout how we can help your business save money with our innovative and unique energy efficient products.
Secondary glazing is almost always cheaper than replacing your original windows, which is good news for the environment as well as your pocket. It’s also a generally much easier process to install, meaning reduced hassle and decoration time! However, not all secondary glazing is created equal: what you’ll pay is very much dependent on the issues that you have in the home and the quality of materials you use to create the secondary glazing.
Key factors in determining the cost of secondary glazing for your home include the number of windows you require secondary glazing for and the type of windows that you have. It also depends on the particular issue that you have which makes you want secondary glazing. Almost all secondary glazing provides a level of draught proofing; however, if you want noise reduction, heat retention, UV protection and a host of other properties, traditional glass secondary glazing can become very expensive.
The reason that traditional glass secondary glazing can become very expensive if you have multiple issues you need the secondary glazing to resolve is because, at the cheapest level, the glass used in traditional glass secondary glazing rarely has any intelligence or extra features added. In order to obtain extra features such as UV protection, fire retardation, or heat retention, specialist types of glasses need to be used, which are often significantly more expensive. Add this to the fact that it is often impossible to combine features in traditional glass secondary glazing, then you may be looking at an expensive compromise.
Luckily there is an alternative. Glaze & Save InvisiTherm is not glass secondary glazing: it is made from polycarbonate. This fantastic material combines many of the features of several types of enhanced glass, but at half the weight and a fraction of the price. InvisiTherm offers reduction of heat loss by approximately 63%; noise reduction by a minimum of 48%; instant draught proofing; complete elimination of UV rays; anti-fading properties and dramatically improves condensation. This suite of benefits is not something you could ever hope to find in traditional glass secondary glazing: it’s simply not possible.
Not only is secondary glazing cheaper than replacement double glazing, but with an advanced technology like InvisiTherm, you can also expect to feel the benefits of lower heating bills, which in turn makes the payback of an InvisiTherm system extremely attractive. Rooms with windows treated with InvisiTherm can expect a minimum reduction of energy bills by 22.5%.
The cost of installing secondary glazing becomes an even more obvious choice if you live in a listed building or conservation area. Whether you live in a Grade I or II building and are simply not allowed to install double glazing, or you live in a conservation area where like-for-like replacement windows can run into tens of thousands of pounds, secondary glazing such as InvisiTherm provides an inexpensive and discrete solution. Compared to the cost of installing replica slim line double glazed windows, InvisiTherm comes out around 75% cheaper.
Whether you are on a budget, seeking to avoid expensive replacement windows, or looking for multiple problems solving technologies in one product: secondary glazing is a cost effective solution that doesn’t need to sacrifice performance, aesthetics or safety for value.
For your free no-obligation Glaze & Save survey, contact us on 01738562068 or firstname.lastname@example.org
Making small changes to your office space and business practices can make a huge difference in the productivity and wellbeing of your employees. And as it continues to be proven time and again, one of the best ways in which to improve the profitability of your company is to have employees work more effectively and efficiently, rather than expecting working hours to increase. So here are a few things that you can do in the workplace that will improve employee productivity and lead to greater profitability for you.
1. Embrace natural lighting
Not only is fluorescent lighting a major cause of headaches and eye strain, it has also been shown to cause depression! No one enjoys working under fluorescent lights, so wherever possible, stick to natural daylight and watch you employee productivity soar. If you can’t go all the way with day light, then consider encouraging employees to take regular breaks outside, and consider installing energy efficient (and healthier) LED lighting for a softer and less detrimental artificial light.
2. Get into Goal Setting
Nothing focuses people like knowing why they are working for something and what the ultimate outcome is going to be. Make sure that you give your teams goals and objectives to meet, with a robust system of measurement in place in order to ensure that your employees know how to continue to move forward. Making your office goals SMART (Specific, Measurable, Achievable, Reasonable, Time-limited) will ensure the best outcomes for you and your colleagues.
3. Reduce noise pollution
We have already blogged about the ways in which noise pollution can affect your employee productivity, but it really does bear repeating! Overcome the niggles, and often more serious health concerns, associated with noise pollution by investing in quality secondary glazing such as Glaze & Save InvisiTherm to reduce noise pollution by a minimum of 48%.
4. Ensure good air quality
It’s equally important that you ensure the air quality of the office is good. Ill-fitting windows can increase the influx of pollution from outside to inside, so it is important to invest in a secondary glazing product that effectively seals the area such as InvisiTherm. Then, in order to improve indoor air quality, invest in pollution catchers to clear pollutants from the air.
5. Reward a job well done
Making sure that your employees are well paid with good incentives is just the tip of the iceberg. Reward teams for good performance; invest in company nights out and events to reward staff and boost morale; consider other perks of the job that will make your employees healthier, happier and ultimately more productive. Healthcare, childcare, gym memberships and cycle to work schemes are just some of the extra rewards that will encourage employee loyalty.
6. Keep your office comfy
Well not too comfy! But having a comfortable work station with ergonomically designed desks, chairs and computer stations will make your employee’s day more comfortable, and greater comfort means greater productivity.
7. Or offer home working instead!
Allowing remote working is not only cheaper and more energy efficient for your business, but it can also boost staff morale; allowing for more time with family or pets. It also allows your employees to avoid the dreaded rush hour commute, meaning that as soon as your employee clocks on, they are fresh, raring and ready to go- instead of dealing with the stress of an hour on the train or a walk in the rain! Home workers might even be more willing to convert some of those saved commuting hours into some extra working hours for the business. However…
8. Set out clear and defined working hours
Everyone needs to pull a few extra hours out of the bag at the office from time to time. However, it is important to establish a culture of defined working hours: the old adage of “first in, last out” is really an example of presenteeism (i.e. being at work but not necessarily doing anything useful!) and most studies show that staying late at work is subject to the law of diminishing returns. Set clear hours and get the most out of your employees between those times.
9. Invest in draught proofing
There can be few things more off putting in the workplace than dealing with a cold draught on the back of your neck! Not only that, but draughty workplaces can lead to staff illness and discomfort. It can even be a source of noise pollution! A well draught proofed office will ensure comfortable, predictable air flow and a higher level of comfort for staff. If you have metal windows, rent your office space or simply want a non-invasive draught proofing solution, consider Glaze & Save InvisiSeal; rubberised liquid silicone draught proofing that creates a complete seal around windows and doors without causing any damage to your original windows.
Draught proofing is one of the most
instantly effective and cheapest ways of making your home more energy efficient
while increasing your comfort level.
We all need controlled levels of ventilation in our homes in order to avoid damp and the clear the air; however, when the air flow becomes uncontrolled this can lead to a cold and draughty home which is not only uncomfortable to live in, but can be very costly in energy expenditure.
Older buildings can lose around 15-20% of their heat via draughts but there are many ways to tackle this without damaging the historic character of your building. And the good news is, such work can pay for itself very quickly. (Historic England)
This is a particularly major issue in historic properties, where wear and tear of the general fabric of the building can lead to uncontrolled air flow and multiple air changes and hour.
Where will I find draughts in my historic home?
Draughts happen wherever there are unwanted gaps in the fabric of the buildings that have been left uncovered. Given that many historic properties experience gaps in window frames, walls and floors, it’s easy to see how draughts can become such a huge problem for historic homeowners.
Draughts can occur at any accidental gap in the building fabric that leads to outside, including:
· windows, particularly in older single glazed sash and case windows;
· around doors – including keyholes and letterboxes
· loft hatches
· electrical fittings on ceiling and walls
· between floorboards
· around pipework leading outside
· at ceiling-to-wall joints
How can I stop draughts in my historic home?
Original windows are often a key part of the character of older properties and therefore every attempt should be made to retain them. This will often mean retrofitting draught proofing improvements to original windows instead of removing and replacing the original windows.
Draught proofing is without a doubt one of the cheapest and most effective ways of tackling heat loss through windows and doors: because of its low cost and effectiveness, payback times are often relatively short.
Older windows are susceptible to warping, and window sills can be particularly susceptible to wet rot. It is therefore important to ascertain whether repairs require to be carried out, as these may also assist in reducing the draughts from your windows.
According to Historic England:
About one fifth of a home's heating is lost through windows. Most of that escapes through air gaps rather than through the glass. Research has shown that air infiltration through a sash window in good condition can be reduced by as much as 86% by adding draught-proofing. And it has the added advantage of reducing noise and dust.
It is therefore of vital importance to draught proof your historic windows.
Creating a complete seal around the frames and on the sash is naturally the most effective way of combating air changes and therefore heat loss. Previously this would have been carried out by routering out channels into the frame and adding draught proofing brushes. However this can make frames extremely weak. Glaze & Save InvisiSeal creates a completely seal around your window frames while completely non-invasive, so you don’t need to worry about weakening the wood of your original window frames.
Another effective method of reducing draughts through your windows is to install secondary glazing, such as Glaze & Save InvisiTherm . This will allow you to keep your original windows in tact while increasing overall energy efficiency. InvisiTherm is discrete, reversible and doesn’t require any planning permission so it is perfect for historic buildings.
Installing double-glazing rather than draught-proofing invariably results in the historic windows and glass being lost, and there is usually a poor visual match between the original windows and those that replace them.
Draught outside doors can be the bane of the historic homeowners life! However, once again Glaze & Save InvisiSeal provides fantastic draughtproofing properties without the need to channel our any wood from your doors, or by adding unsightly brushes.
Chimneys can be at the heart of many draughts in historic properties, and should be tackled along with windows, doors and floors in order to ensure and air tight home.
Dampers can be utilized to reduce draughts when the flues are not in use, although they need to be of a loose fit in order to allow air flow through the flue. Other cheap and effective methods include chimney balloons and chimney sheep.
Suspended timber floors are notorious for being draughty, especially if they are left bare. The quickest way to tackle these draughts is to lay down some heavy carpet or a rug. However, if you prefer the exposed floorboard look, you can also fill the gaps in by using draught proofing strips, timber or even papier mâché.
1. Make sure you have an energy policy. An energy policy will help you stay the course with your energy usage, as well as informing any behaviours that your employees need to address.
2. Get and energy audit: An energy audit can help you identify areas that you need to improve in your workplace. If you’re in Scotland, Resource Efficient Scotland can carry out a free energy audit in your workplace, with plenty of helpful tips to save you money.
3. Reduce paper waste: Encourage staff not to print out documents or files unless absolutely necessary. When printing use both sides of the paper. Use recycled paper and recycle the paper you use in turn.
4 . Hold virtual meetings and work from home: Reducing your in-person meetings can reduce your energy consumption in the office and your transportation costs. Using apps such as Skype can provide a cheap and convenient way of keeping in touch. Equally, allowing employees to work from home can further reduce lighting and heating costs in the office.
5. Turn off the lights!:Discourage the use of lights where daylight would suffice. Install motion sensor lights to ensure that lights are only being used where needed to ensure maximum energy efficiency.
6. Switch off equipment: It’s easy to walk away with equipment still left on, or using the dreaded standby function. Make sure that you switch off all equipment, unplugging if possible, to stop them from drawing power.
7. Switch over to LED lighting: LED lighting uses significantly less energy than conventional bulbs.
8. Invest in draught proofing: Small draughts can cause big problems in the office. Make sure you track down unwanted sources of air flow and stop them with a flexible invisible draught proofing product such as InvisiSeal .
9. Keep control of your heating and cooling: Keeping control of your office temperatures during the seasons, by using your thermostat or smart meter, can save you energy as well as keeping your staff more comfortable.
10. Replace old equipment with energy star appliances: If older appliances and heaters are not the most efficient available, then you should speculate accumulate by investing in A rated energy star appliances to save you money for years to come.
11. Encourage you employees to become more energy aware: We already blogged about this here , but encouraging your employees to take up your energy saving policies is the key to ensuring success in reducing your energy bills.
12. Take advantage of funding options available for energy efficient measures:There are plenty of funding options available for business who want to make their processes and operations more energy efficient. Resource Efficient Scotland offer an interest from loan to SMEs and the Carbon Trust offer a 30% capital grant .
It’s no secret that we’re pretty crazy about secondary glazing at Glaze & Save. We produce InvisiTherm, a bespoke polycarbonate magnetic secondary glazing system that might just be the best in the world (I know, we’re so modest!).
In celebration of yesterday’s World Environment Day 2017 , we’re going to look at how secondary glazing really could save the planet…yes really!
Increased Energy Efficiency
It’s no secret that we’re facing an energy crisis; in recent years energy efficiency has become a necessary buzzword as gas and electricity bills skyrocket and fossil fuels become a less stable source of energy. One of the main ways we can increase the energy efficiency of our homes is by making our windows and any other glazed areas as thermally efficient as possible.
Secondary glazing, and InvisiTherm in particular, is exceptional at reducing heat loss from windows. InvisiTherm can achieve heat loss reduction through single glazed windows of around 63%, representing around a 22.5% saving on your energy bills.
With the right installation, this method will keep your house warm during cold seasons and can go a long way in reducing your energy bill and adding value to your home for potential buyers.
Secondary Glazing is More Environmentally Friendly than other Options
Not only does secondary glazing help reduce your energy consumption, it also encourages resource efficiency by supporting you to keep your original windows instead of the more wasteful process of replacement. Your original windows will almost always be comprised of better quality and more durable materials than replacement windows: no matter how expensive they may be! The sad fact is, many people tear out their original 100 or 200 year old windows and replace them with windows that may only last 10 or 15 years, thus ensuring the cycle of wasteful replacement. Choosing a greener solution like InvisiTherm secondary glazing not only stops this cycle, but InvisiTherm itself is made from a highly sought after recyclable material. If you ever decide you no longer need your systems, Glaze & Save will collect your systems and recycle them into fuel poor households.
Secondary glazing reduces construction waste
Not only does secondary glazing encourage the retention of original windows, but systems such as InvisiTherm are perfect for the retrofitting of historic and hard to treat buildings, saving them from disrepair and demolition, saving resources and energy.
It’s no secret that historic buildings are often left to ruin because of expensive maintenance bills, difficulty in treat windows and doors, and the expense to heat. Because InvisiTherm ordinary requires no planning permission, and can be fitted discretely over any type of glaze, it makes for a great option for listed and historic buildings. Then, once the system is fitted, even in unheated rooms a temperature increase of five degrees Celsius can be achieved, regulating temperatures and allowing the buildings to benefit for a warmer, drier environment.
So there you have it, just a few reasons why secondary glazing might just save the planet. If you’re interested in finding out more about World Environment Day check it out here, and if you’d like more information about Glaze & Save InvisiTherm you can email our office at email@example.com
Having a green presence is increasingly important in the world of business. Indeed, we wrote about it in our blog “Why Going Green is Good for Business”, touching on the various social and economic reasons why taking a firm environmental stance can have a great impact on your bottom line.
With World Environment Day approaching us on the 5th of June 2017, it’s time to narrow the focus and ask why World Environment Day itself it great for business. And it really is!
Since it’s establishment by the UN in 1974, World Environment Day has been a catalyst for raising awareness and encouraging action on a host of increasingly relevant issues such as climate change, poaching, fresh water access and ocean pollution. This has motivated millions of people to take part across the world in making greener changes to their lives, communities and businesses, in over one hundred countries.
There is a new host country and theme every year. 2017 sees Canada hosting the day, with the chosen theme being “Connecting People to Nature”.
So what does this mean for your business?
By actively engaging with green events such as World Environment day, you can turn your company and your workplace into a place of real positive change. And as we mentioned previously, the public in turn respond extremely positively to businesses with green credentials. Where businesses undertake green initiatives, profits increase. However, it’s probably not advisable to go green purely for the positive public affirmation.
By participating in this year’s theme and getting people reconnected with nature, you can continue to see business benefits. Spending time in nature has been shown to improve bot mental and physical health, leading to healthier and happier staff. Which all adds up to greater productivity.
You’ll also benefit from running a more energy efficient and lower-cost operation, leading to greater profitability. When you become a leader in green business, your customers and your competitors take notice.
Listed and historic buildings need some extra attention
when it comes to adding energy efficient improvements to their windows, but we
could all do with enhancing the efficiency of our homes. By adding improvements
to the existing windows, you can save yourself money as well as saving the
What is Retrofitting?
Retrofitting is the addition of improvements to a property to reduce energy consumption. Retrofitting energy efficient improvements to your original windows will extend the life of historic and traditional buildings while making them consume less energy, therefore being more environmentally friendly.
Why do we need to retrofit older buildings?
Scotland had many traditional buildings, with buildings built prior to 1919 making up roughly 19% of total building stock. As well as this, many inter war properties have solid walling, meaning that over half of all of Scotland’s houses are energy inefficient. Over 40% of our CO2 emissions comes from current building stock.
Listed and traditional buildings are generally deemed to be hard to treat, and planning controls associated with listed buildings generally create issues in obtaining funding for upgrading schemes. As such, it is important to look into retrofitting measures that work within the planning constraints of your building. Demountable or removable improvements such as Glaze & Save InvisiTherm™ can often be more beneficial and easier to approve in these situations.
Windows often account for large areas of walling in traditional houses and tenement flats. It’s a feature that we love; however they can be massively inefficient. Despite this ineffiency, keeping your original windows in tact is almost always the best way to ensure the look, feel and character if your property, while reducing the construction waste associated with installing replacement windows. Original windows are almost always made of superior quality materials as well, ensuring that they will stand the test of time better than their modern equivalents.
We use U values to measure how effective a material is as an insulator: the lower the number, the better an insulator the material is. Single glazed windows are a very poor insulator with a U value 5.5. Adding heavy lined curtains to your windows can bring this down to 3.3. Shutters can bring this down to 2.2. (Insulated shutters 1.6)
Secondary glazing sometimes has a bit of a bad reputation. Metal-framed glass windows, or musty acetate, affixed with ugly hinges do little to counter this. Glaze & Save InvisiTherm™ changes that by using innovative polycarbonate and a discrete, demountable magnetic strip to hang from. Because InvisiTherm™ is completely removable with no damage to your existing windows, in many cases you do not need to obtain planning permission to install it. Not only that but InvisiTherm™ can also be fitted to allow shutters to work and involves no loss of the original fabric of your windows. You can retain original your sash windows with historic glass, and avoid altering or removing them to receive double glazing.
Glaze & Save InvisiTherm™ is the most energy efficient secondary glazing on the market and can bring the U value to 1.7.
Original sash windows helped a home to breathe, but they were not meant to be draughty. As time passes the wood of the sash window becomes warped, leading to gaps of up to a combined ten inches squared! Draught-proofing is therefore one of the easiest and most efficient ways to increase the energy efficiency of your home by combatting uncontrolled air flow.
This can involve the use of brush strips fitted to parting beads, baton rods and meeting rails, and can also involve routering out new units or brand new beading. This can cause problems to your original windows, as such invasive procedures inevitably weaken the wood of the window and can lead to further warping, or dropped sashes. Glaze & Save InvisiSeal™ is another option: an innovative homogenous silicone that seals the draughty areas of your windows and doors before discretely drying like rubber. Best of all, InvisiSeal™ is completely non-invasive, meaning that your windows remain completely intact, all while being almost completely invisible.
Draught-proofing wont decrease the U value of your windows; however it will seal off some of the air flow in your home, allowing you to reduce your energy consumption and enjoy a less draughty house.
One of the quickest ways to treat tricky original windows, or to add some extra privacy, glare reduction of cooling functions is by the addition of window films. Gone are the days a limited options and bubbly films. Glaze & Save InvisiFilm™ is professionally installed film with a range of different functions and aesthetic appeal. In conjunction with draught proofing measures such as InvisiSeal, this is a great option for fragile older frames that may not cope with the added weight of secondary glazing, or for those who would simply like a privacy solution that doesn’t include net curtains (which is particularly beneficial if you want to use your working shutters for example).
So there you have a few ways in which you can go about retrofitting the original windows of your historic buildings. Remember: retrofitting original windows is almost always more cost effective and generates better payback times than installing replacement windows. So preserve these integral parts of your building’s history and character, while saving yourself some money at the same time.
You can find details of all of Glaze & Save’s retrofitting solutions on our website .
It’s never been more important for entrepreneurs to consider the environmental impact of their business operations. As well as adding value to your product by imbuing it with green sensibilities, becoming a more eco conscious entrepreneur can also lead to increased staff productivity, lower energy and resource costs, a better public image and, ultimately, increased sales.
Encourage you employees
Getting you employees on board with your eco policies is fundamental to ensuring success across you business. After all, all of the policies and procedures you can muster will not have an impact if your employees are not also truly invested in your green vision. You can read more about making your employees greener in our blog 8 Tips to Make Your Employees for Energy Aware.
In a nut shell: make your policies public and easy to access, incentivise your employees for participating in and exceeding targets, and ultimately make your employees feel invested in you green policies and see the benefit for themselves.
Take a look at transport
A company’s transportation fleet can be one of the biggest environmental impacts that an organisation can have. Ensure that you are utilising government funding to upgrade to the lowest emission vehicles possible for your business, as well as encouraging good driving practices by using limiters. If your business supports it, you could even consider using electrical vehicles. There is even funding available to have electric charging points installed at your place of work.
Even if transport isn’t part of your day to day operations, considering how your employees get to work will boost your eco credentials. Implement car pooling schemes, participate in the Cycle to Work Scheme or consider letting your employees work part of the week from home.
Reduce Energy Consumption
Stopping the wasteful consumption of energy in your business is arguable the most important factor in making your company more environmentally friendly. We have written extensively on this subject , but fundamentally what reducing energy consumption comes down to is being mindful of how you use your appliances and technology and look for obvious behavior changes that you can implement in yourself and your staff to cut down energy use.
Once you have implemented a company-wide system of behavioural change, you can begin to look at installing technologies with a low pay back time to start actively reducing your energy bills. Draught proofing and secondary glazing are prime examples of technologies that can have great pay back times. For example, Glaze & Save InvisiTherm reduces energy bills by a minimum of 22.5%, giving a payback time of around 3-5 years. Its also a great option for leased premises as it can be easily removed.
Recycling is a great way of getting your employees to actively participate in your environmental strategy, and makes for a great tangible example of your green credentials which you can then use in your marketing communications.
The key to success is to ensure that your recycling options are easily accessible. Make sure there are plenty of recycling bins, all clearly labelled and easy to access for all of your employees. WRAP UK and Zero Waste Scotland are both great resources for information on reducing waste and increasing recycling in your business.
Use environmentally friendly suppliers
Creating a sustainable and environmentally friendly chain of suppliers throughout your business process shows a real commitment to your green credentials. Find out what your suppliers are doing to reduce their carbon footprints, reduce emissions and save energy. If they don’t meet your standards, work with them to create a more environmentally friendly outlook, or vote with your cheque book and find a new supplier.
Historic buildings are part of our heritage, telling stories of times past while often displaying impressive and awe-inspiring architecture and design. However, years of wear and tear, unsympathetic retrofitting or simply advances in modern house buildings technologies can often render historic buildings incredibly energy inefficient, leading to high fuel and running costs, maintenance and preservation issues, and an otherwise poor public perception as resource inefficient and wasteful.
However, modern building practices and energy efficiency measures are often inappropriate. Indeed, in a Guardian article from 2014, John Vidal writes :
“But [the National Trust] were unanimous that when it came to energy efficiency, Britain’s 5m historic houses – defined by the Society for the Protection of Ancient Buildings as anything built before 1919 – should not be treated like new ones, and that green deal-style modern technologies were often inappropriate.”
Luckily, there are many possibilities for ideas and inspiration for the energy conscientious historic homeowner or caretaker. So with that in mind, we’re going to run through several ways in which you can improve the energy efficiency in your historic building.
1. Use appropriate insulation
Historic buildings were built to breathe. It is therefore important to ensure that any insulation you add to your property is breathable and therefore compatible with the building. The construction of older properties is such that water should be able to pass through the structure. It is therefore critical to take this into account when insulating the roof, floor or walls of your historic building. Ensuring that breathable materials such as wood fibre board for walls and sheep’s wool for roofs ensures that the breathable capacity of the building will not be blocked. Interfering with the breathable capability of your historic building can cause structural decay or poor air quality.
2. Keep your chimney in check
Chimneys were first introduced into buildings as not just as a means of ventilation, but as a way of displaying wealth. However, unused or infrequently used chimneys in your historic building may be doing some damage to your own wallet by causing expensive and discomforting draughts. While open chimneys can be a useful source of ventilation, the issue comes when they let too much warm air out and cold air in.
It is a balancing act between maintaining good levels of ventilation and stopping uncomfortable draughts. Guidance from conservation officers is that flues should not be closed off in order to allow for the chimney to draw new air into the room from under the floor and behind plastered surfaces. However, temporary measures to reduce draughts, such as chimney balloons or chimney sheep, can and should be used to great effect at reducing draughts.
3. Ensure your glazing is performing well
Older windows can often become exceptionally draugty over time, particularly if they are sash and case single glazed windows. They distort over time and gaps open up as the joints become weakened. However, although excessive air leakage through older windows can lead to exceptionally uncomfortable draughts, it is nevertheless important to ensure that the original windows are retained wherever possible. Not only is this almost always a conservation consideration in listed buildings, but original windows are often constructed of superior materials that will outlast any modern replacement windows. This is where secondary glazing such as Glaze & Save InvisiTherm comes in. Research has shown heat losses by conduction and radiation through a window as a whole can be reduced by over 60% by using secondary glazing with a low emissivity (Low-E) hard coating facing the outside, and Glaze & Save InvisiTherm reduces heat loss by an average of 63%. The research has also shown that further savings can be made if the secondary glazing uses insulating frames such as our foamed back magnet . Besides increasing the thermal performance of windows, secondary glazing unlike double glazing can have a number of other benefits including being highly effective at reducing noise, for example Glaze & Save InvisiTherm reduces noise by a minimum of 48%.
4. Check out the STBA interactive guidance wheel for sustainable retrofitting in historic buildings
The wheel depicts more than 50 measures that can be used for the retrofitting or refurbishing of traditional buildings. It encourages exploration of the measures’ advantages, concerns about their performance and possible interactions between them.
Each measure has a number of advantages and concerns (categorised into technical, heritage and energy). The concerns are colour coded and their summary is shown in the wheel 'rings' for technical, heritage and energy concerns.