Basement air sealing is something everyone should have done if the basement or the floor above the basement is unusually chilly. Chances are there are leaks in your basement that is letting cold air come in and affect the temperature of your home.
Insulation isn’t enough
Fiberglass is common basement insulation. It is a mistake to think that this will stop any air leaks. In fact, any time there is a leak it reduces the insulation’s effectiveness along with letting cold air flow in. In order to make the basement more comfortable, have all air leaks sealed along with having rigid foam insulation installed in the walls of your basement. This will not only make the basement a better temperature and the floor above it, but it will also make your home more energy efficient.
Where are there most likely going to be leaks?
Most leaks in the basement are found around the perimeter of the floor. There are lots of things coming together there and so there are more chances of gaps happening.
Basement windows can also allow air to come in. Replacing leaky windows with some that have a good frame that won’t rust will help air from leaking into your basement.
Basement doors can also have leaks surrounding them. Good weather-stripping around the door should help solve this problem.