How to insulate a garage floor above a concrete slab.
How to insulate garage floor.
How to insulate a garage step by step.
Dealing with the edges.
Here s my step by step process for how i added insulation to my garage.
The polystyrene board insulation won t be long enough to stretch across the entire garage.
Last chance to waterproof your wall.
Drill and screw into place on the garage floor.
Continue along the floor making sure there s a 2 feet gap between the joists.
This means insulating a two car garage would cost about 338 845.
The other consideration for floor insulation is the level of the floor in relation to the rest of the house.
Consider all aspects of insulating your garage not just the walls but also the garage doors and the ceiling particularly if you plan to add a heating and or cooling system.
I wrote a tutorial on how to waterproof and seal your garage walls using drylok.
If you didn t do that before you put the frame up you can still do it now although it s going to be.
Once you have all joists secure on the garage floor it s time to put in the insulation.
The foam insulation and two layers of plywood can add as much as 2 inches of height to the garage floor.
Garage insulation costs vary based on the size of the space and the insulation you purchase.
Concrete is cold and hard but an insulated concrete slab can make a heated garage significantly warmer and more energy efficient.
And don t forget to take flooring into account.
If there is a step up from the garage into the main part of the house assuming that the garage isn t detached then the insulation and new floor build up can be added to make the new rooms at the same height to the rest of the house.