How To Re Roof With Architectural Shingles

Attach each shingle with three nails one in the center and one each on each side.

How to re roof with architectural shingles. Apply a cover of starter architectural shingles. As you can see from the photo the architectural shingles will have bumps created by the old shingles which will keep the new shingles from looking flat and smooth. After that correctly positionthe first shingle and properly snap a line of chalk across the roof to mark the top layer of the shingles. Use galvanized roofing nails long enough to fully penetrate the sheathing typically 1 1 2 inches for a second roof and 1 3 4 inches for a third.

Apply the first real course of architectural shingles so that the tabs reach the lower edge of the starter course. Architectural shingles are durable less prone to curling and hide imperfections better. Architectural roofs should be able to and withstand more damage than 3 tab shingles. While both types are made up of the same essential components re roofing over architectural shingle is a different case altogether.

The standard practice is to limit to a total of two layers of shingles. Re roofing with 3 tab shingles are pretty straight forward. Nesting each new row below an existing one keeps the new nails 2 inches below the existing which will help minimize any splitting of the sheathing. Mark a chalk on subsequent roof layers upward.

Best solution is tearing off the old shingles first. 51 to 124 per roofing square shingles are priced per roofing square which is equal to 100 square feet. The professional answer is no you should not attempt to re roof architectural shingles over existing architectural shingles. If you ve got a new roof on your mind there must be something noticeably wrong since these types of roofs come made to hold up for a lot longer than a 3 tab.