Installing Fanfold Insulation On Roof

Consult local building codes and membrane manufacturers for system requirements.

Installing fanfold insulation on roof.

To install foil insulation roll it out parallel to the ridge and cut it with a utility knife starting at the drip edge and working your way up. My house currently has cedar shake which i m removing because it is in poor condition. There are several ways you can do to insulate the metal roof. Benchmark foam s tapered expanded polystyrene eps roofing system provides effective drainage for flat roofs.

Tips to install metal roof insulation use foam batting. R tech ff is ideal in recover applications and is well suited for single ply roof applications that employ mechanically fastened or ballasted tpo pvc epdm and cspe membranes. Overlap seams by about 3 inches. Putting an insulation layer could help you to stay away from this issue.

R tech rigid foam fanfold insulation. Foam board insulation is easy to use and is a great diy way to add some insulation. It comes in standard size 4 8 sheets and smaller sizes in many different thicknesses from 1 4 inch to 2 inches. It can be touted that foam batting material is the best one to pair with metal roof insulation.

I plan on putting vinyl siding. Another benefit of using staples is that they do not make a large hole when penetrating into the sheathing. My question is do i install fanfold foam insulation over the substrate and then put housewrap over the fanfold or do i put the housewrap on and then fanfold over that and then vinyl siding any help with this would be greatly appreciated. Some types of thicker foam board insulation are available but they may need to be special ordered.

It is not the normal insulation type that can be rolled up. If installing closed cell spray foam or other low permeance insulation to the interior it is very important to verify that the roof sheathing and framing are dry e g. 12 15 moisture content or less before installing cavity insulation. Verify that substrate dry and free of foreign material that will damage the fanfold underlayment.

Eps insulation is easy. The easiest and by far the quickest way to install metal roof insulation is with 1 inch staples. A install tri built fanfold underlayments directly over old siding using galvanized or aluminum roofing nails with nails spaced about 2 feet apart.