Nails have been overdriven, damaging the shingle matrix, and the nails do not fully penetrate the roof deck. It is no wonder I see complaints by TUFF SHED customers of shingles falling off or nails popping though within only a few years. What is the point of having "lifetime architectural shingles" if the nailing is deficient and will detrimentally affect the long term performance of the roof? Many articles say avoid roofers who use 3/4" nails, calling these roofers "storm chasers" and "fly by night" operators. Just GOOGLE "shingle roof nail length" and you will see countless technical articles and illustrations warning of the problem with short nails. They have little grip compared to properly sized 1-1/4" roofing nails and will pop up over time, lifting and damaging shingles and creating roof leaks. Also, where roof nails enter the roof framing, the 3/4" nails do not meet the 3/4" embedment requirement of Code and manufacturer instructions, due to the thickness of the shingles. Do the math: thickness of shingles at nailing strip plus thickness of deck is almost 3/4", making it impossible for the nail shank to penetrate the roof deck. In fact, if the nails are not overdriven, 3/4" nail points cannot penetrate the deck at all. Much of the nail points remain within the thickness of the deck. Full penetration of the deck is required by roofing shingle manufacturer instructions and by Building Codes. The problem is, 3/4" nails are not long enough to go through Timberline shingles and fully penetrate the OSB deck. The nail length is not in TUFF SHED's advertised specifications so customers are unaware. This is seen in virtually all TUFF SHED models, even the Premier Pro Studio which comes with GAF Timberline architectural shingles. TUFF SHED shingle roofing is typically installed over 7/16" OSB using 3/4" long roofing nails. Cap flashing is an industry standard not followed by TUFF SHED. Without cap flashing rainwater can enter between the shingles and the underlayment. I had to have a custom cap flashing made by a local metal shop because TUFF SHED does not provide cap flashing at the top of their monoslope roofs. Also, there was no cap flashing at the ridge and there were three nail heads left exposed. I did not realize the wrong nail size was used until after the installation when I noticed that nails were not penetrating the roof deck as they should have.
The nailing is defective and will likely lead to future problems. I am unhappy with my recent (May 6, 2020) TUFF SHED Pro Studio roofing installation.
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