How To Properly Insulate A Garage Roof

If there are wooden trusses or frames in the roof you.

How to properly insulate a garage roof.

Step 1 choose the type of insulation the first thing you need to do is choose the type of insulation you are going to use. Spray foam is excellent for both r value and for air sealing. If garage is attached 5 8 drywall is minimum code in most areas. The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams and the material will block that flow.

Get your expanding foam and vigorously shake it for about one minute. As a high end material typically used for energy efficient construction spray foam is overkill for most garage projects. Buy fiberglass bats that match the configuration of your roof. I also noticed that you have a metal roof.

Garage roof insulation guide carefully study the roof for any electrical outlets or any other objects such as lighting. Measure the space between joists and studs to determine the width of the insulation you need. Make sure you have enough ventilation on your roof as well. How to insulate a garage wall in four easy steps step 1.

Staple plastic or foam baffles to the roof sheathing near the eaves to keep the material away. For the same reason insulation shouldn t touch the roof s underside. As a general rule of thumb. Clear the walls for the insulation.

Consider renting a residential. If you are insulating the garage ceiling not only by the truss level but also up by the roofline then you must leave at least 1 1 2 to two inches of air between the fiberglass and the underside. If you have a. If your garage has drywall remove it.

Look for gaps and cracks in the wall. There should be a continuous ridge and soffit ventilation. 24 inch on center is too large for hanging rock overhead especially 5 8 rock. Be sure to count the spaces above doors and windows.

Foil faced batt insulation is often used in cathedral ceilings because it provides the permeability rating often required for use in ceilings without attics. As for installing drywall you really should install strapping at a max of 16 on center to mount your 5 8 fire rated rock to. But it might make sense if you re converting the garage to living space. To prepare determine the area of the space you plan to insulate and add 10 to 20 percent to account for mistakes and odd spaces you need to fill.