Re lay the shingles you removed from the existing roof.
How to blend a roof extension shingles.
If it comes out to an odd number like 7 5 adjust the spacing to make it 8 rows.
Usually the original was whole then half or it could be quarter half and full.
In some cases you can.
Hold the end of a chalk line at one of the outermost top corners of the carport roof frame.
Measure your roof from the bottom to the top of your porch roof plus one row your last shingles will slide under your home s shingles.
Removing asphalt shingles is a big job and you might be temped simply to lay the new roof over the old one.
Just lay out three rows next to the old about 6 wide and rearrange them until they blend.
Lift the underlayment out of the way and then lay a 3 ft wide roll of waterproof shingle underlayment in the valley.
Mark this point of the.
How to remove old asphalt shingles before putting on a new roof.
Divide that number by the length of the tabs.
This gives you the number of rows of shingles you will need.
Replace missing or worn out shingles by carefully removing nails and fasteners sliding a new same sized shingle into place and nailing it down.
Shingle the addition roof letting the new shingles fold through the valley center and onto the old roof deck by at least 1 ft.
String the line along the top of the frame until it meets the shingle roof.