Is Your Roof Past Its Prime?

The following will help you identify the potential for roof failure.

Bare Spots

The protective granular surface of shingles wears off as the asphalt, into which the granules are embedded, begins to harden over time.

Bare spots are often accompanied by fine fissures on the shingles' surface and by the accumulation of granules in the gutters.

Bare spots in shingles
Bare spots on shingles
Broken Shingles
Broken Shingles

Broken Shingles

Damage can be caused by extreme wind conditions and snow removal.

Since shingles are supposed to shed water, broken, torn or missing tabs become obvious entry points for water, especially on low slope roofs where run-off is slower and at the peaks of the roof where shingles are the most vulnerable to high winds.

Buckling

Buckling is a visible distortion or waviness in the horizontal lines of shingles, and usually runs in a straight line up the roof slope.

Shingle tabs become exposed to wind and can be torn off. Very often, the problem is warping in the roof deck caused by poor attic ventilation.

The use of thinner-than-recommended plywoods and other non-plywood materials adds to the problem.

Buckling Shingles
Buckling Shingles
Shingles clawing
Shingles clawing

Clawing

Buckling is a visible distortion or waviness in the horizontal lines of shingles, and usually runs in a straight line up the roof slope. Shingle tabs become exposed to wind and can be torn off.

Very often, the problem is warping in the roof deck caused by poor attic ventilation.

The use of thinner-than-recommended plywoods and other non-plywood materials adds to the problem.

Curling

The upward curling of shingle tabs makes them highly susceptible to wind and ice damage.

This is a problem on older roofs where moisture build-up in the attic affects the underside of the shingle.

Curling Shingles
Curling shingles
Flashing
Flashing

Flashing

Many problems occur at the flashings around vents, soil stacks, chimneys and vertical wall joints.

Is the flashing cracked? Is the caulking around the flashing dried out? Are the shingles that lie over the flashing in good shape?

Ice Damming

Winter weather can often cause roof leaks which damages the interior of your home.

Ice dams occur when the exterior roof is warmer than the outside temperatures. As the snow melts, it will refreeze around the colder areas, such as your roof overhangs and gutters.

The refreezing will start to form a high area called an ice dam. Once the ice dam builds up to a high point, water will reverse itself and can cause the roof to leak inside your home.

Ice Damming
Ice damming
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