How To Install Insulation Under Existing Metal Roofing

Insert 3 inch galvanized screws through the fastening plates.

How to install insulation under existing metal roofing.

Remove the existing roof if you have one. Use a drill to drive. In this case simply lay the insulation between the purlins. One of the more popular methods of placing metal roofing on a home is to lay down purlins across the existing shingles.

Make sure that the insulation you are using is the same thickness so that the metal roof will fit better. It can lie down perfectly under the metal roofing without having to deal with the hassle. Insulating a new metal roof step 1 install plywood or oriented strand board osb to act as structural roof sheathing. How do i insulate a metal shed roof with rigid foam.

Attach a weather proofing or vapor resistant sheet of material over the plywood. Insert a plate every 2 square feet of insulation board. If you plan to insulate your metal roof with fiberglass go ahead but follow smart installation procedures. 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.

Lay and attach plywood or osb oriented strand board to the exterior. Position the fastening plates over the insulation board. Using staples will allow you to install the insulation easily and quickly. Install by using staples.