Cellular blinds
They're excellent insulators, thanks to their ingenious design which uses hollow honeycomb-shaped cells to help control the temperature in your home. Any heat passing into or out of your home passes through the honeycomb pockets of the cellular blinds, which prevent it from escaping.
Plastic film insulation kits are the best cost-effective way to cover your windows.
Honeycomb blinds are by far the most effective window treatment for heat retention. The unique construction of honeycomb blinds traps pockets of air to create an insulating barrier against cold windows. They're also fitted closely inside the window jamb, with only a minimal gap on the sides.
Insulated blinds are built with an arrangement of single, double or triple cells, which add air pockets to the blinds that can effectively block cold air. The hollow cells create a barrier between the cold temperatures seeping through the window and the rest of your heated space.
Fabric blinds are the most effective at keeping the cold out. Venetian blinds with slats, for example, are better for the summer because they allow heat to escape between the slats. Honeycomb blinds are a form of fabric roller blind that works well as both an insulator and a sun blocker.
Probably the best blinds to keep the heat in overall are Roman blinds; the good quality lined type. These are made of a very thick material, and are one solid piece of fabric without any gaps for air to get through. They'll be even more efficient at insulating if they come with a thermal blackout lining.
Window Insulation Film
Window insulation kits are a more affordable way to insulate multiple windows. Using heat control window film doesn't interfere with the look of your windows. Leaving up to 1-inch space from the window frame border, apply adhesive tape to the entire window.
For insulating draperies and curtains, you will want to choose something much sturdier. Velvet is a nice heavy choice that also adds a classy look to the room. Tweed is another great, heavy-duty fabric that will protect your home from that cold air that might sneak through drafty windows.
Emergency management agencies specifically recommend using aluminum foil-covered cardboard that goes between windows and drapes.
Sunshine streams in through the window, and the gap in between the window and blinds captures the heat, producing a greenhouse effect. In the winter, this is a desirable effect, and in the summer, when you want it to be cooler in your home, all you have to do is raise the blinds to leave the window uncovered.
Closed blinds serve to deflect the sun (and so, heat) before it gets into the room, which reduces unwanted solar gain and helps to keep your home cooler in turn.
Savings in Energy and Money
Window film covers are inexpensive, reduce drafts, help the house feel warmer during winter months, and reduce moisture buildup on the window due to condensation.
Yes, very much so. Thermal blinds are a great pick for rooms that get horribly hot in summer, whether or not they also get overly cold in winter.
Adding motorisation to your roller blinds will also increase the ability of the blinds to keep your home warmer in winter. Set them to close at a certain time when the temperature drops to keep your home insulated, even when you're not there.
Curtains are soundproof and offer better insulation
The thicker the curtain is the more insulated they are. However, in summer, blinds are better than curtains for energy efficiency. This is because heat escapes easily through the slats.
'Specific thermal blinds can really make a difference to your home and help to reduce your energy bills,' she says. Thermal blinds work by creating a heat reflective barrier at your window.
The Bottom Line. If you are looking for something to Blackout light, we would recommend 100% Blackout curtains. However, if you need something to help reduce the heat loss in a room and not totally darken a room, we would recommend Thermal curtains.
Thermal lining fabric has a thin, rubberised backing to it and is therefore effective at reducing heat loss. Blackout lining has an additional acrylic layer to prevent light passing through the fabric.