0 Helpful?

Flat roof venting

I am building a house in WV with a 3 FT height flat roof attic. The 18" trusses are up and had them put an "attic foil" below the roof sheating. My HVAC and water pipes will be below the trusses. There is a 3 Ft. roof hangover surrounding the house. WHAT IS THE BEST WAY TO INSULATE THIS ATTIC.
My contractor is planning to put the fiberglass insulation in the trusses. Can he do that ?

Asked by Cherry Lobaton
Posted Nov 19, 2012 7:44 PM ET

Tags:

1 Answer

Select your preferred way to display the comments and click "Save settings" to activate your changes.
1.

Cherry,
Q. "What is the best way to insulate this roof?"

A. The best way to insulate a flat roof is to install a thick layer of rigid foam insulation on top of the roof sheathing. Then install roofing on top of the rigid foam.

Fiberglass batts between the trusses will not perform very well, and may lead to moisture problems.

Answered by Martin Holladay
Posted Nov 20, 2012 7:21 AM ET

Other Questions in General questions

ERV and flex duct

In Mechanicals | Asked by William Costello | Mar 22, 17

Insulating floor of an old barn

In Energy efficiency and durability | Asked by Michael Stelts | Mar 22, 17

PV panels on the roof or in the yard?

In General questions | Asked by user-6801629 | Mar 24, 17

2 layers vs 1 of outsulation?

In Energy efficiency and durability | Asked by Adam Fuller | Mar 24, 17

Another Question over Spray foaming Cathedral Attic

In Green building techniques | Asked by uberaustin | Mar 24, 17
Register for a free account and join the conversation


Get a free account and join the conversation!
Become a GBA PRO!