Cut the 2 by 4 boards to match the wall height you wrote down in step 2.
Insulate concrete wall in garage.
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.
The best way to insulate a slab is to isolate it from the ground.
How to insulate cinderblock garages.
Measure the length of the wall.
Leave the floor above it uninsulated vapor seal the ground below with polyethylene and a thin concrete slab insulate the walls with a foam based insulation such as 4 in.
Write the height on a piece of paper.
Actually it needs to trap the cold air between the exterior wall and not let it through to your garage.
Concrete is cold and hard but an insulated concrete slab can make a heated garage significantly warmer and more energy efficient.
The first is to use a fibreglass insulation much like the type found in any typical loft.
There are two main ways to insulate a concrete garage.
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.
For example while an epoxy coating will add a protective layer to the floor it won t necessarily add insulating values.
And don t forget to take flooring into account.
Measure the height of the wall.
Batt insulation is designed to fit snugly in between your studs as long as your studs are a standard width either 16 or 24.
And there is no effective way to fill the voids in an existing concrete block wall.
Cut 2 by 4 lumber to the height of your concrete wall minus 1 1 2 inches for a header and footer.
Make a mark on the wall every 4 feet.
Of unfaced expanded polystyrene r 15 that allows the foundation to dry inward and condition the space with air from inside the house.
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.
For example if you have a 7 foot wall you ll need 6 foot 10 1 2 inch long studs.
The insulation needs space to breathe.
The second is to use a coated foam sheet like the ones manufactured by kingspan or celotex.