What you Need to Know About Secondary Glazing | Glaze & Save

Secondary glazing can still be something of an unknown quantity, after all, so many traditional systems are bulky, unsafe and inefficient: it really gives secondary glazing a bad name! But it really is the best options for many properties, especially if you live in a listed building or in a conservation area. So that’s why we decided to put together this blog answering all of your secondary glazing questions.

Do I need planning permission?

InvisiTherm is completely demountable and removable, and is completely invisible from the outside and virtually invisible from the inside. This is usually enough to satisfy local conservation or planning departments; however we would always recommend checking with your local department first.

Okay, so how will it look on my windows?

InvisiTherm is virtually invisible: both through the glaze and within the frame. We colour match our systems to fit your window frames exactly, to make them even more discrete. If you are concerned we are always happy to introduce customers to our existing happy customers so they can view a nearby installation. We are called the invisible system: our customers are very happy with the discrete look, with over 70% of our customers reporting that their windows look better with InvisiTherm than before, giving the windows are shine like they have never seen before.

Great, so how much warmer will it make my property?

InvisiTherm reduces heat loss through single glazed windows by 63%. In unheated rooms this translates as an increase in temperature of five degrees centigrade.

Wow, and will it save me money on my energy bills?

Yup, InvisiTherm reduces energy bills by a minimum of 22.5% where the previous temperature is maintained.

And does it reduce noise pollution?

It does. InvisiTherm reduces noise by a minimum of 48%, with many customers reporting a reduction of 70-80%.

Will it reduce condensation on my windows?

Yes, in two ways. Firstly, InvisiTherm is a warm product that elevates the temperature of the glazed area, meaning that it is no longer a cold spot to attract condensation. Secondly, InvisiTherm holds half its weight in water, allowing it to absorb existing condensation and moisture in the surrounding area. This means that InvisiTherm effectively eradicates condensation, although properties with particularly bad condensation problems may take several weeks to see an improvement.

I’m worried about UV rays fading my home furnishings. Can you do anything about that?

Absolutely. InvisiTherm completely blocks ultraviolet rays through the glaze, eliminating fading of artwork, furniture, wallpaper, curtains and photographs. It also makes us the perfect choice for nursery windows, office windows and for use in shop fronts, museums, art galleries and anywhere else that requires UV protection.

I have working shutters, will I still be able to use them?

Yes you will. Our system is fully compatible with working shutters allowing you to benefit from the thermal capabilities of both. When our system is used with working shutters it will give a u-value of just 1.1: better performance than brand new replacement window units.

My windows are an odd shape/ curved at the top can you install on these?

Yes, our highly skilled team of installers love a challenge and will produce templates to allow the system to be cut into any shape. They can also form bespoke framing on site to precisely follow any curves.

What is the largest window you can install one system on?

The largest window that we can cover with one system would be 6100 x 2050mm. Should your window be larger than this, we aim to follow the original form of the window, lining up any framework to match the windows and colour matching to ensure that it blends into the background.

Where can I store the system, should I wish to remove it during warmer days?

Firstly our system stops 27% of the sun’s heat from coming into your home so if you do remove the system it is likely that you will be warmer.

However, should you wish to remove it, as standard we provide you with a cling film wrap that can be wrapped around the system to ensure it is protected, we can also provide bespoke storage bags and parking docks, depending on what best suits your needs.

Okay, this all sound great. When can you install in my property?

Lead time is currently 6 weeks for installation and a minimum of 12 weeks in the winter, so don’t delay if you want to feel the benefits asap!