I was called to investigate a “mystery” regarding a leaking residential roof. The reason it was a mystery is that other roofers had inspected it and could not explain why it was leaking. Plus, a 5-year-old roof should not be leaking!
After entering the attic for the roof inspection, it was obvious that a prior roofer had taken some shortcuts and lacked experience.
Current roofing standards require the decking on top of a roof to be 4’ x 8’ plywood or OSB strand board. On older roofs, the decking is 1“ x 6“ or 1“ x 8“ planks.
When the roof was installed, the roofer used the wrong size planks which created gaps. In the gaps are nails where there should be wood. Multiple nail heads were visible with rust at the bottoms indicating a widespread problem. Mystery solved but the tale of these trusses is far from over.
Using the correct roof decking materials would have prevented this problem from occurring. Instead, this 5-year-old roof will have to be redone!
Choose your roofing contractor wisely. Don’t just pick the lowest bid. Education, Experience, Reputation and a Good Warranty are important factors to consider when hiring a roofer. The lowest bid could become the most costly in the end.