Last chance to waterproof your wall.
Insulating a concrete garage ceiling.
Insulating the ceiling of your garage involves the same process as insulating the walls.
Run a bead of silicone caulk along the bottom of the wall between the wood and the concrete.
The first is to use a fibreglass insulation much like the type found in any typical loft.
This is part 1.
You can insulate the walls ceiling and door of the garage to the highest r value possible but if you fail to fill those air gaps you ll still be wasting a lot of heat.
There are two main ways to insulate a concrete garage.
The second is to use a coated foam sheet like the ones manufactured by kingspan or celotex.
Here s my step by step process for how i added insulation to my garage.
If there is no finished space insulate at the interior wall.
If you plan on using your garage for temporary activities like a mechanic or woodworking shop you would insulate both the interior and exterior walls.
The ceiling is concrete panels that lay over a steel beam in the center and on the foundation walls on the perimeter.
This will help while you re up on the ladder.
So before insulating go around the garage with a can of low expanding spray foam and seal all gaps and cracks that let in the daylight.
Insulating a concrete ceiling the space is under a garage that is part of the house.
I wrote a tutorial on how to waterproof and seal your garage walls using drylok.
Then focus your attention on the bottom of the wall.
How to insulate a garage ceiling.
For example while an epoxy coating will add a protective layer to the floor it won t necessarily add insulating values.
If there is an finished space over the garage insulate at the garage ceiling.
Just remember to use thicker r 40 insulation.
How to insulate a garage step by step.
If you didn t do that before you put the frame up you can still do it now although it s going to be.
How to install insulation in garage ceiling for insulating your garage.
And don t forget to take flooring into account.
Measure the height and width between the framing in the ceiling and pre cut the pieces you ll need.