Let’s look at the problem simply;
Heat Loss from Windows;
Warm air moves toward cold glass.
Heat is lost through unprotected glass.
The facts regarding Window coverings;
Poorly fitted curtains lose heat.
Well fitted curtains trap heat.
Let’s discuss the three best options for heat retention for your windows.
There is a disclaimer here. If you want maximum heat retention you must hang them according to the following method;
Floor to ceiling and extended each side of the glass.
If you can’t mount your tracks at or on the ceiling then (don’t laugh) a good old-fashioned pelmet is your best friend.
The weight of drapery or linings is less important than the fitting method. Even a light weight fabric will give good heat retention if the window is sealed by the fabric- top, bottom and either side.
Whisper® blinds from Weathermaster® with Honeycomb construction.
For best results, these should sit inside the window frame.
They come in three different cell options and each has a different thermal rating known as R values.
These are the only blinds that have a calculated R value.
Lined Roman blinds mounted above the windows and extended each side of the glass will give good heat retention.
Make sure to have them finish below the window frame when in the lowered position.
All of these options work to beat the cold because they seal the window stopping the cold air / warm air reverse chimney effect*.
*Reverse chimney effect;
Warm Air moves towards the cold window then travels down the back of the curtain and pushes the cold air down and into the room creating a continuous flow of cold air.
This is why having your curtains mounted just above the window and the fabric finishing just below the sill will not give you the best heat retention. All this does is create a chimney for cold air flow.
Call into the Frazerhurst showroom at 146 Lower Dent Street and discuss how to get your home warm for winter.