Insulating Garage Roof Trusses

The garage is free standing not attached the previous owner used this property as a vacation rental and walled in one bay of the garage up to the trusses presumably for personal storage.

Insulating garage roof trusses.

Some do it yourselfers commonly forget to leave air space between the fiberglass and the underside of the wood roof sheathing. This is part 1. 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. I am planning on insulating and finishing the outside walls.

Water is insulation s enemy. Make sure that all of the pieces are the same size so that they fit into the trusses. To install the insulation overhead you need to staple the pieces to the roof trusses. Box out light fixtures.

If you have a flat garage roof and an attic above you can install the garage insulation from below using a standard ladder. It s about time i had a better work environment. The tape will also make sure that there is an air pocket available in the insulation. To answer some of your questions.

You should use some foil tape to make sure that the insulation is stable on the roof edges. It creates a breeding ground for mold and mildew and ruins the air trapping pockets that block heat flow. However if you have a cathedral style garage roof you will need a scaffolding to get into the upper areas of the roof. The main benefit that it provides is it s very cheap yet at the same time it manages to provide the broad coverage that you need very fast.

There are many methods that you can use for insulating garage roof trusses but the most popular one is definitely the foam board. In either case you will need to follow the general steps below to insulate your garage roof. Look for water stains on the roof sheathing or damp or moldy spots on attic joists and existing insulation as a clue to where leaks might be.