Roof assemblies - renovation
What causes ice dams and how to fix them
Pot lights : they are not so much a problem due to the heat they generate, but they are very hard to seal. And worse than other air leaks, as it passes by the bulbs, this heated air magnifies the problem.
Snow: this may be hard to wrap your head around, but snow has an R value of between 1 and 2 depending on...