How To Install Insulation Under Existing Metal Roofing

Remove the existing roof if you have one.

How to install insulation under existing metal roofing.

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. Attach a weather proofing or vapor resistant sheet of material over the plywood. Install by using staples. Position the fastening plates over the insulation board.

Make sure that the insulation you are using is the same thickness so that the metal roof will fit better. Lay the plywood perpendicular to the roof joists and fasten it in place using galvanized or stainless steel roofing nails. 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.

Insert a plate every 2 square feet of insulation board. Use a drill to drive. If you plan to insulate your metal roof with fiberglass go ahead but follow smart installation procedures. Using staples will allow you to install the insulation easily and quickly.

In this case simply lay the insulation between the purlins. Enter fiberglass insulation a common relatively inexpensive easy to use product. How do i insulate a metal shed roof with rigid foam. Lay and attach plywood or osb oriented strand board to the exterior.