Insulation Above Purlin - New Metal Roof Application
After the trusses are set, run two purlins to make sure the trusses stay true.
Install purlins. Nail or screw to the trusses.
Attach the InfraStop® double bubble product to the purlins with at least 5/16” staples. Temporarily nail a 2” x 4” block over the end of the product at the starting edge to prevent it from pulling away.
Roll out the product across the top of the purlins, When installing product, insure that a minimum of a 3/4” drape (middle of cavity) is present between the trusses.
Run subsequent course of the product with the ¾” staple tabs overlapping or square edge butting or overlapping at the seams.
Tape the seams with InfraStop® Foil Tape (goal is an air-tight, snug seam seal).
Install the metal roof to the purlins.
Standard Size Rolls for Barns: Square Edge and Staple Tab
Custom Size Rolls for Barns: Square Edge
Metal Interior - R-6.8 Heat Flow Down (and a Radiant Barrier) | R-6.0 Heat Flow Up
Open Interior - R-6.4* Heat Flow Down (and a Radiant Barrier) | R-4.3* Heat Flow Up
Please Note: In addition to the stated R-value, this application also provides a Radiant Barrier. As a result, a 94% + reduction of the radiant energy that ordinarily would be transmitted to the interior of the building is blocked.
*Includes thermal resistance of 1.32 UP and 4.55 DOWN for interior air film.
InfraStop® Insulation products are a group of technologically advanced materials. They are ideal for new construction or retrofit applications in commercial, industrial, metal and post/frame buildings, along with many other DIY applications. When you think of insulation, you should think of InfraStop®. Our products are recognized for their thermal performance, easy installation, versatility, price and environmental friendliness.
- Easy to handle and install
- Convenient roll sizes
- Class A / Class 1 Fire Rating
- Inhibits dew point condensation
- Vapor retarder (0.02 perms)
- Does not compress, collapse or disintegrate
- Non-toxic / non-carcinogenic
Testing and Certification
InfraStop® products are thoroughly tested at either nationally approved independent laboratories or leading universities. Tests are performed to current American Society of Testing and Materials (ASTM) standards when a standard exists. For a copy of an actual test report, please e-mail us at firstname.lastname@example.org.