How To Re Roof With Architectural Shingles

You can cut the layered edge of architectural roof shingles and use the cut flat piece as your starter roof single.

How to re roof with architectural shingles.

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. While both types are made up of the same essential components re roofing over architectural shingle is a different case altogether.

Instead of one layer laminated or architectural shingles have two or more layers with three dimensional tabs of varying sizes. 51 to 124 per roofing square shingles are priced per roofing square which is equal to 100 square feet. After that you should tear off old shingles before installing a new layer. Architectural shingles are durable less prone to curling and hide imperfections better.

Re roofing with 3 tab shingles are pretty straight forward. The professional answer is no you should not attempt to re roof architectural shingles over existing architectural shingles. Attach each shingle with three nails one in the center and one each on each side. The standard practice is to limit to a total of two layers of shingles.

Best solution is tearing off the old shingles first. 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. Apply a cover of starter architectural shingles. Mark a chalk on subsequent roof layers upward.