...all the best materials in the world are worthless if they are installed incorrectly

Don’t Walk on the Roof

You could dislodge the protective surface granules, diminishing waterproofing effectiveness. You also could fall off or through a weak, damaged roof.

If you find large accumulations of shingle surface granules in the gutters, it doesn’t necessarily mean the roof needs to be replaced. A contractor should inspect the roof, however. ·

Tile roofs should be checked for cracked, missing or loose pieces of roofing material. For asphalt or wood-shingle roofs, look for protruding nails. · On flat roofs, look for bare spots in the gravel surface and check for standing water. · Take a close look at the flashing on chimneys, vents, skylights, wall/roof junctions and other areas where the integrity of the roof may be compromised.

Check television antennas and other add-ons to see if there are leaks that are a result of improper sealing of openings made in the roof.