Next, add a layer of 1/2” plywood on top, with screws driven through everything and at least 1 1/2” into the underlying roof rafters. The new roof goes on top of this fresh layer of plywood.

In modern homes external walls are likely to achieve R2.5 while ceilings/roofs achieve a total of R4.5; this means the uninsulated floor can conduct 5 times more heat than the wall and 9 times ...

Learn how to effectively install a vapour barrier, warm roof insulation, and manage a greasy sandwich for optimal energy efficiency in your home. This step-by-step guide will help you create a ...