Stop drafts, bugs and
Our double glazed window systems can help counter the negative effects caused by the gaps around existing windows
The heating and cooling loss from an unsealed home, through gaps around doors and windows can be up to 15%. This is equivalent to removing a few bricks from your wall.
It is also important to remember that a window allowing airflow around it will be a poor insulator, no matter what its materials and construction.
Drafty windows affect your comfort
Drafts through & around your windows can create cold spots in the room, particularly around the legs and feet. As a result internal heating is normally turned up higher than necessary to compensate & even the cat or dog will want to jump up on the couch to snuggle next to you for warmth.
The tight tolerances designed into our secondary window glazing system keep both the heat & cold air and dust out whilst retaining the cool or warm air in the building.
Extensive use is made of air-conditioning in today’s busy offices, shops, and at home. Installing secondary glazed windows & doors will help to reduce the energy used in heating or cooling the building and also stops warm or cool air escaping out through your windows.
For doors and windows to function they must have gaps between their edges and the frame. These gaps allow for ease of opening, closing and accommodate normal building movement.
These gaps can also allow the intrusion of :
- Cold drafts or draughts,
- Dust and embers
- Insects and vermin
And the leakage of:
- Air conditioning
Secondary double glazing can prevent the major impact of such gaps around your windows.
Air Permeability Test
This defines the ability of the window to resist air penetration when it is subjected to differential pressure and is a measure of the air which seeps through the test window at given test pressures.
The average amount of air which leaks through a metre of the opening weather seal (as seen from the inside of the window) is measured and the measurements are calibrated in cubic metres (m 3), per hour, per metre of opening seal. A two panel slider 1215 W x 1193 H was fitted to a test rig at BSI in Hemel Hempstead.
The chart shows that as compared to a standard window (A & B), our secondary glazing offers a substantial reduction in air seepage at all pressures (C).