Air Leakage from around window frames

Here are some pictures, taken from test sites around the Yorkshire region in the last year of what not to do:

This is a typical window frame without the plate on, taped and covered with cling film with the house under pressure. the volume of air coming through this is amazing and helps to illustrate air coning from the cavity into the home from all of the cracks in a house. You would never let this go uncompleted of course, but the builder thought it would be okay to have the test with it missing and, of course, it couldn't as we can see ... BTW, I don't know what that green stuff is outside the window, everything around here is all white :)

For more information or to book a test, call me on 01484 686649 or visit my website on http://www.hometestingyorkshire.co.uk/

I hope this helps

Matt