How To Install Metal Roofing Over Existing Shingles. Install new bottom roof edge. The two pieces should meet neatly at the corners.
Install new bottom roof edge. Leave the old valley flashing in. And the painting on metal roof today has the added ability of being able to reflect some of the heat back out of the house, too.
The Roof Has Only One Covering Of Asphalt Shingles.
When you install your new metal roof over an existing shingle roof, you immediately save money that normally would be spent to have the old roof torn off. Cool outside air travels under the shingles to the vented ridge, pulling out moisture and heat. Take note of any leaks or cracks in the.
Cut Around The Shingles Covering The Existing Vents, Jacks, And All Along The Edge Of The Roof.
Besides, metal roofing materials weigh much less than the shingles, making it easier for you to install then over shingles. They install a specific type of metal panels. The image above illustrates a general furring strip approach, although, as you might guess, there are numerous variations to this method.
Condition Of Existing Asphalt Shingles;
Attach with nails along the top edge of the strip. The top has to go under the metal roof and the bottom over it. Repair broken shingles that are torn or cracked.
Besides, Metal Roofing Materials Weigh Much Less Than The Shingles, Making It Easier For You To Install Then Over Shingles.
A steel roof is a lifetime investment, lasting 50 years or more if it’s a good one. Other building and zoning areas might be a bit more lenient. A properly installed metal roof should last for 40 or 50 years or more before a replacement is needed.
However, If The Steel Roof Is Installed Over An Existing Asphalt Roof, Noise Shouldn’t Be A Problem.
The new bottom roof edge must be installed before the metal roofing to allow the natural flow of water off the roof. Remove obstructions like air vents or pipe flashings. Water flows down the slope of your roof.