It may take some time for the water to appear but if it appears during or after a rain the roof is the place to look for the source.
I ve got a leak in my roof.
And just one rusted out nail can cause your roof to leak every time it rains.
Run water over the low side of the penetration for several minutes while the helper watches for any water droplets.
Grab a bucket trash can or some other container and place it under the site of the drip or suspected leak.
If your gutters clogged up with debris or leaves water will stop flowing off the roof.
The goal is to find the leak before the entire roof goes bad.
Begin soaking low on the roof just above where the leak is visible inside the house.
The leaking occurs during or shortly after a rainfall.
Use enough water to mimic heavy rains.
Finding the actual spot where the roof leaks is difficult because water can enter the roof in one place and run down to another before it starts soaking into the ceiling.
Follow damaged insulation back to the source of the roof leak.
Consider getting a gutter cover to help keep the gutters free of debris.
In addition roofing system leaks will make themselves known through other symptoms.
Contain the leak if you find water dripping from a bulges or discoloration in your ceiling it s likely that water is pooling on the other side of that bulge or dark spot.
Water can soak into the roof and cause a leak.
If the leak isn t obvious have a helper watch in the attic while you get on the roof with a garden hose.