Film for Windows

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networkn

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#239577 24-Jul-2018 15:54

Our heat pump guy talked to us about film that goes on windows, which can help with temperature control, but he has moved away now and I can't for the life of me find what he was likely talking about, or recall the name?

Apparently it helps keep the hot in and cold out?

Sorry to be so vague, anyone have any idea what I am talking about or any experience with it, more importantly and ideas on costs?

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#2061769 24-Jul-2018 15:58

How do you think a thin film will provide significant insulation? Sounds like snake oil.

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#2061775 24-Jul-2018 16:07

https://www.consumer.org.nz/articles/advertiser-makes-misleading-window-film-claim Like this?

Theres also thermalglasscoat

networkn

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#2061776 24-Jul-2018 16:08

I think it reflects the heat or something. I am no expert, I wanted to find out it's name so I could investigate. It's not the first time I'd heard about it. Apparently it's relatively new but hugely popular overseas.

mentalinc

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#2061782 24-Jul-2018 16:14

You can get film on car windows which reduce glare and some heat rejection, but I wouldn't be using it to keep the house warm.

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networkn

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#2061784 24-Jul-2018 16:17

Mostly it's to avoid needing a heatpump to keep two very small rooms in our home (which are side by side separated by a wall) cooler than they are, as a heatpump would be massively overkill, even a very small one.

da5id

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#2063471 27-Jul-2018 11:31

Mitre 10 sells it in kits, ranging from one windows, to several, to doors, etc. They even have a video on how to apply it.

https://youtu.be/Y7SA0BUW0Ss?t=3m4s

If you don't like the idea of sticking tape on your window frames, lots of sites advocate cutting bubble wrap to size, spritzing the window with water, and placing the wrap on so that it clings. It is claimed that this keeps twice the amount of heat in.

https://home.howstuffworks.com/green-living/insulate-windows-bubble-wrap.htm

https://www.howtogosolar.org/keep-the-heat-in-with-bubblewrap/

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#2063491 27-Jul-2018 11:47

networkn:

Mostly it's to avoid needing a heatpump to keep two very small rooms in our home (which are side by side separated by a wall) cooler than they are, as a heatpump would be massively overkill, even a very small one.

If it's cooling, then I think you're probably looking for solar window film - I've found this very effective in the past. We had a west facing room that just got too hot in summer. We started with white venetian blinds to reflect as much light as possible, but found that a reflective film worked much better at stopping the room heating up so much.

We used the reflective stuff. It did make looking out the window a bit greyish though.

Can't remember who we used, but it was professionally installed. It may have just been a glazier actually. You can do it yourself, but there looked like there is a bit of an art to it and I knew that any folds or bubbles would trigger something of an obsessive response in me. Quick google shows lots of options.

Obviously doesn't do anything for retaining heat, but very effective at preventing heat.

tdgeek

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#2063494 27-Jul-2018 11:50

I think @richms commented on this the other day, he has them, or had them

Gordy7

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#2063505 27-Jul-2018 12:06

Check out 3M window films...
Might not be able to get them locally...

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da5id

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#2063548 27-Jul-2018 12:10

Gordy7: Check out 3M window films...
Might not be able to get them locally...

Available from Mitre 10, as per my above post.

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#2063704 27-Jul-2018 15:25

Really have to go to the 3M web site to see the range of films along with technical info.

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networkn

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#2063711 27-Jul-2018 15:38

The heatpump guy we used didn't mention 3M, but did say it was a new and overseas brand.

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#2063733 27-Jul-2018 16:10

They're probably talking about the glad wrap like window thin double glazing. It works kinda ok but I had to repaint all windows, plus it's really ugly.

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#2063792 27-Jul-2018 18:40

Sounds like https://www.energywise.govt.nz/at-home/windows/low-e-window-film/

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#2063798 27-Jul-2018 18:55

LMFAO

Awesome stuff.... Has some downsides....

Seriously, Anyone selling a "film" that's going to change your energy use is full of it, with an SH in front.

Tinting works.

Double glazing works.

Lamination works.

*disclaimer: I used to work for a big glass company and saw things like this and we laughed and laughed! Oh, did we laugh... because if it was that easy, they'd be trillionaires!

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