How To Properly Insulate A Garage Roof

Spray foam is excellent for both r value and for air sealing.

How to properly insulate a garage roof. Buy fiberglass bats that match the configuration of your roof. For the same reason insulation shouldn t touch the roof s underside. I also noticed that you have a metal roof. Foil faced batt insulation is often used in cathedral ceilings because it provides the permeability rating often required for use in ceilings without attics.

How to insulate a garage wall in four easy steps step 1. As a high end material typically used for energy efficient construction spray foam is overkill for most garage projects. If there are wooden trusses or frames in the roof you. If garage is attached 5 8 drywall is minimum code in most areas.

As a general rule of thumb. It is important that the roof cavity be totally air sealed from the conditioned space below to prevent moisture intrusion and roof degradation. Garage roof insulation guide carefully study the roof for any electrical outlets or any other objects such as lighting. 24 inch on center is too large for hanging rock overhead especially 5 8 rock.

There are two main types of insulation appropriate for use in garage roofs. Look for gaps and cracks in the wall. Make sure you have enough ventilation on your roof as well. Here is a guide on how you can insulate the garage roof in a few easy steps.

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. If you have a. 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. Be sure to count the spaces above doors and windows.

Clear the walls for the insulation. Staple plastic or foam baffles to the roof sheathing near the eaves to keep the material away. Measure the space between joists and studs to determine the width of the insulation you need. If your garage has drywall remove it.

Get your expanding foam and vigorously shake it for about one minute. But it might make sense if you re converting the garage to living space. The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams and the material will block that flow. 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.