How To Install Metal Roofing Over Asphalt Shingles 2021. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof. Leave the old valley flashing in place, and install new over it.
Work your way upwards towards the top of the roof to install all the shingle tabs and ensure the surface is covered, and overlaps the ridgeline. Because asphalt shingles are routinely exposed 5 in., rip down the first strip (the starter course) so that it is 5 in. Condition of existing asphalt shingles;
Hold The Shingles With The Help Of Nails.
The installation of metal roofing is often easier and faster than other roof types, and because of its simple design and generally large size, can actually be installed directly on top of existing roofing materials like asphalt shingles and foam roofing. Roof deck sheathing roof covering materials such as asphalt shingles must be installed on solidly sheathed roofs. Roof coatings such as kynar will last a long time and won’t fade, but they’re also expensive.
Installation Costs Typically Range From $5,000 To $28,000.
An asphalt shingle roof which costs $3 to $7 per square foot installed. In a new construction, metal shingle roofing can be installed over any type of solid sheeting such as plywood or wooden planks / boards that do not have spaces in between them. Certain colors, such as red or blue, tend to oxidize more quickly than other colors, and the method of finishing the metal panels is critical.
Install The Metal Roofing Sheets One By One.
Attach with nails along the top edge of the strip. Installing a metal roof over shingles. To install, line the valley with underlayment secured with roofing cement.
Though Metal Shingles Have A Longer Lifespan Than Asphalt And Other Types Of Roof Shingles, They Can Be More Expensive To Install.
If you currently have an asphalt roof and need to replace it, you may have an option of installing a metal roof over shingles. This is based on a standing seam metal roof (the recommended choice for residential roofing) and the 3 types of asphalt shingles. Butt the end of each shingle in the course against the previous one.
Work Your Way Upwards Towards The Top Of The Roof To Install All The Shingle Tabs And Ensure The Surface Is Covered, And Overlaps The Ridgeline.
Use a starter strip or cut pieces for a starter course. Fiberglass core or matting, an asphalt coating and a ceramic or stone granule surface give this material its durability. Install the metal edging around the entire perimeter of the roof.