If you are concerned about roof damage, a quick inspection immediately after a rainstorm is the ideal time to check for possible leaks. Leaks are usually difficult to pinpoint in dry weather, so take advantage of the rain and perform a quick roof inspection. 

1. Attic 

The most obvious place to check for leaks is the attic, but the damage may not be immediately noticeable during dry weather. Going into the attic when it is raining means you can pinpoint moisture intrusion as it is happening. If there is moisture or wet spots in the attic, take the opportunity to trace the water to the hole on the roof cladding and mark the suspected leak clearly with a marker.

2. Gutters

Many roof leaks begin due to gutter issues. Overflowing or leaking gutters can cause water to run down the eaves and leak under the roof edge. Clogged gutters can lead to water backflow up the roof slope, causing moisture to seep beneath shingles. Check the gutters during a rainstorm for overflowing or leaking from the troughs. Overflowing gutters need to be cleaned, while leaking ones require sealing.

3. Shingle Granules

Asphalt shingles depend on their granule layer to help provide waterproofing. When the shingles begin to fail, these granules break free and collect in the rain gutters or on the ground along the roof drip line following a rainstorm. Check for granule accumulation following heavy rain. A few granules are nothing to worry about, but heavy granule loss means your shingles are in danger of failing.

4. Fireplace and Vents

Water leaks often occur around the fireplace and vents first because the roof flashing in these areas is more likely to fail before the shingles do. Look at the ceiling around vents and chimneys for wet spots or bubbling paint whenever it has been raining. If the ceiling is damp or if you can press into the wallboard easily with a thumbnail, then you may have a leak at this location.

5. Roof Plane

A properly sloped residential roof should not have any puddles on it during a rainstorm, as the water should slide right off. Check the roof either during or immediately after the storm, walking around the house so you can see it from all angles. If there is collected water or puddling on the roof, then you have an area at risk of developing a leak. Prompt assessment by a roofer is needed.

Contact a roofing company if you suspect a leak is affecting your roof.