How To Secure R15 Insulation To Roof Deck

July 2011 fine homebuilding s article about roof venting included a method for insulating cathedral ceilinged roofs with 6 of rigid foam topped with plywood sheathing and conventional shingles.

How to secure r15 insulation to roof deck. Batts secured to the deck with insulation hangers between top chords or more commonly tension cables secured at the ridge and eaves with eye hooks to prevent fall out. Mechanical fastening with self tapping screws and plates is the most common and approved method for insulation attachment on steel and wood roof decks. We ve seen it multiple ways. I have a roof deck of 2x6 t g on a post and beam constructed roof.

The snugness of the foam itself should be sufficient to hold the strips. Foamular xps roof insulation for commercial buildings page 5 foamular xps roof insulation for commercial buildings foamular xps insulation is a rigid foam insulation which meets the needs of today s design professionals for a truly sustainable insulation product. A recent mckinsey co. The platform is to be raised at least six inches from the ground or floor level.

Cover the deck with water shedding material and secure. The platform needs to be covered with a moisture resistant material before the deck is stacked on the platform. The ratio of insulation above the roof deck or air permeable insulation below the roof deck is a matter of climate and interior conditions. Insulation above the roof deck or air vapor impermeable insulation below the roof deck is needed for condensation control in an unvented roof.

Use a drill to drive. Improved insulation is a good step toward improving building efficiency particularly since the atlanta based american society of heating refrigerating and air conditioning engineers ashrae increased minimum roof insulation levels in 2007 in its standard 90 1 the first increase in 18 years and if that isn t enough to spur someone into action. Owens corning insulation products help improve thermal performance and control moisture in commercial institutional and. Insert a plate every 2 square feet of insulation board.

Insert 3 inch galvanized screws through the fastening plates. Insulation must secure properly to the roof deck to provide an acceptable substrate for the roof covering. Position the fastening plates over the insulation board. Fiberglass insulation hangers for under roof deck david johnson posted in green building techniques on may 14 2012 02 12am i m having trouble finding fasteners for hanging fiberglass insulation from sprayed on polyurethane foam in a conditioned attic conversion application.

And fiberglass batts strapped to the roof deck are a bad idea 100 of the time.