What R Value Insulation Should I Use In My Garage

While some ceilings in the southwestern part of the united states require a minimum of r 19 insulation most attics or ceiling areas require a minimum of r 38 in the ceiling.

What r value insulation should i use in my garage.

As a high end material typically used for energy efficient construction spray foam is overkill for most garage projects. Here the level of r value you apply is largely going to depend on whether or not you have a finished room over the garage. It s also often referred to as a 2x4 for these use r 13 insulation. Which r value should i use.

These r values are a sum meaning this should be the total r value once you add up the entire depth of insulation. This will allow you to add the needed insulation. Naturally insulation with a higher r value also has a higher initial cost. Basically the higher the r value the more the insulation is going to resist the movement of heat in or out of your garage.

Next on to your garage s ceilings. For example an r value of 16 isn t twice as effective as an r value of 8. It depends on many factors. First consider local codes and how they apply.

At a certain point there s diminishing returns. They may set restrictions on use of insulation possibly requiring a certain minimum or type. Use r 40 thick insulation for the ceiling. So don t go crazy when you re shopping to get the highest r value.

Spray foam is excellent for both r value and for air sealing. The idea is if you install a higher r value insulation to begin with then you ll see long term savings in heating and or cooling costs. Some newer homes built in the last 10 15 years were built with 2x6 studs. These require r 21 insulation.

You should be targeting an r value of r 13 or r 15 in these areas to properly maximize your insulation in this application. Retrofoam of michigan has been in the foam insulation game since 2002. Second how it s used how it s built how it s heated and whether it is at. For example if you have a type of insulation that has an r value of r 5 per inch of thickness you will need a depth of 6 inches of this insulation installed in your attic to reach r 30 if you live in zones 2 or 3.

The best insulation options for your garage will depend on whether the space has existing drywall or if the walls and ceiling are exposed. Most older homes were built with 2x4 studs. If the garage is open to the rafters the boards that support the roof use r 38 insulation between the rafters at the roof if they are 10 inches deep. To get more insulation in the garage install a ceiling and provide access to the space between the ceiling and the roof.

A stud is a vertical framing piece in a wall.