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Other stories by Harrison McCampbell

  • Q&A: Why Asphalt Shingles Won’t Seal

    Q: Two years ago, in the middle of the summer, I re-roofed a house here in Montana with three-tab asphalt shingles. The south-facing slope came out perfect, but the north-facing slope would not seal. I know the temperature was hot enough and the installat

  • Q&A: Asphalt Shingle Nailing

    Q: Can asphalt shingles be nailed above the adhesive strip? I have seen leaking low-slope roofs with relatively new asphalt shingles, where the leaks followed the nailing pattern. In the attic, there were rows of drip holes in the cellulose insulation on the attic floor. In this case, the shingles...

  • Troubleshooting Roof Leaks: Problems & Solutions

    A small roof leak can create expensive problems. An inspector with years of experience surveys the trouble spots on both flat and steep roofs.