How To Install Metal Roofing Over Shingles Step By Step. Starting at the bottom or at one end of the roof lay the felt across the entire length and then work your way to the top or center with over laying sheets and as you overlay use the nails to pin this down. Then cover the entire roof with a layer of insulation and secure it with a staple gun.
Next you are ready to install the metal roof. Your metal trim will go along the roof s edges as well as the top ridge. Bend the metal edging to your needs if necessary and fasten it to the roof with nails at every 4 to 6 inches.
When installing the metal roof you will use panels to secure the metal to the existing shingle roof.
Yes you can install a metal roof over shingles. In very general terms the cost of a metal roof will be twice the cost of a new asphalt roof. Step 5 install metal sheets begin laying the metal sheets from the bottom to the top of the roof. Install the roofing screws vertically along each rib in the panel.