Don’t glaze over. Windows and skylights are all about getting light into your house but they can also create a hothouse in summer and an ice-box in winter. Try these GIY projects.

WATCH NOW: Renshading windows to keep your house cool.

Renshade with play

If you want to keep your house cool in summer without cranking up the energy-hungry cooling you have got to stop the sun hitting the glass. Here's a cheap way that works.

Trickiness rating: EASY

WATCH NOW: Secondary glazing windows with window insulation film.

Secondary Glazing

Windows are the weakesk link (thermally speaking) in the average house. They cause more heat gain and loss than any other area of your home  - even when they're closed.

To stop this you have to insulate them - double glazing, heavy curtains or some form of secondary glazing that traps a layer of still air.  In this GIY project we insulate a timber sash window with a plastic film called Clear Comfort (this is an Australian product but there are a wide range of similar and cheaper products available in the US).

It is affordable (between $5 and 12/mdepending on the brand), easy to install and really makes a difference.

Trickiness rating: EASY


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