DIY Ways to Insulate Your Windows
15th March 2025
3 min read
DIY Window Insulation Ideas
We’re sure you’re tired of the words ‘energy crisis’. We certainly are. It seems not an hour goes by without that phrase rearing its ugly head. And while we’re loath to bring it up, it’s simply unavoidable. Indeed, the issue shows no signs of abating (as of Nov 2022), so cutting back on your energy bills are more important than ever.
A typical house loses anywhere between 10 and 20% of its heat through the windows. This makes window insulation one of the most impactful ways you can help cut back on your energy expenditure. But how to do this? Well, that’s why you’re reading this blog – to find out. So let’s get right into it.
Use Window Insulation Film
One of the most cost-effective DIY ways to insulate windows, adding insulation film is a tried and tested method that actually works. Not only is insulation film incredibly cheap, it’s also super easy to install.
All you need is a measuring tape, double-sided sellotape, a spoon and some scissors. While this won’t solve all your winter-related woes, it will certainly have an impact. However, if should be noted that insulation film is less effective on windows which are particularly airy.
Consider Draft Excluders
As mentioned above, if your windows are partial to drafts, insulation can be a bit trickier. Placing draft excluders around the frames can mitigate some of this, helping your room stay warmer for longer. This is another very-budget friendly form of home insultation. Plus, fitting them takes just a few minutes. Simple!
Image credit: @victorias_victorian
Re-Caulk Your Windows
A lot of windows – especially older windows – lose much of their heat because of damaged caulk, or a complete absence thereof. Many window insulation issues can be solved by simply replacing old dried out and chipped caulk. All you need is a tube of caulk (you may even have an old one sitting around), a Stanley knife, and hey presto. All done.
Insulating Shutters
Did you know that DIY shutters are one of the best ways to protect your windows from the cold? Because plantation shutters are made-to-measure to the exact specifications of your window, they provide a flush fit that fabric window dressings can't match.
Shutters are fitted close to the window, which helps to prevent drafts and ensures that a minimal amount of heat escapes. This is especially effective when the movable slats (louvres) are completely closed, creating a solid barrier of hardwood between your room and the cold glass.
More Than Just Insulation
Shutters look great, but their benefits go far beyond aesthetics and thermal efficiency:
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Extra Privacy: Tilt the slats to block the view from the street.
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Soundproofing: The solid wood helps dampen outside noise.
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Property Value: They are a permanent fixture that adds value to your home.
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Summer Cooling: They aren't just for winter; they reflect the sun's heat to keep your home cool in July, too.
Get in Touch
If you’re interested in upgrading your home with thermal shutters, our friendly team is here to help. You can measure and fit them yourself to save on installation costs while securing a lifetime of better insulation.