How To Install Insulation Under Existing Metal Roofing

Lay and attach plywood or osb oriented strand board to the exterior.

How to install insulation under existing metal roofing. Attach a weather proofing or vapor resistant sheet of material over the plywood. But it is important to make sure that the paper liner is installed correctly between the sheathing and the insulation to prevent mold and mildew. Measure the roof area and. Enter fiberglass insulation a common relatively inexpensive easy to use product.

Remove the existing roof if you have one. Using staples will allow you to install the insulation easily and quickly. It can lie down perfectly under the metal roofing without having to deal with the hassle. In this case simply lay the insulation between the purlins.

Insert a plate every 2 square feet of insulation board. Insulating a new metal roof step 1 install plywood or oriented strand board osb to act as structural roof sheathing. One of the more popular methods of placing metal roofing on a home is to lay down purlins across the existing shingles. Use a drill to drive.

Install by using staples. Make sure that the insulation you are using is the same thickness so that the metal roof will fit better. How do i insulate a metal shed roof with rigid foam. Insert 3 inch galvanized screws through the fastening plates.