Examine the roofing closely for signs of the leak at the location you measured.
How to find a shingle roof leak.
If the paper towel picks up water shine a.
Once you locate the source of the water mark the area.
If you can t see the source of the leak continue to look higher up on the roof since water can run down behind the shingles before emerging in the attic decking or rafters.
To do this one person goes onto the roof with a garden hose.
If you find any exposed roofing nails there is a good chance this can be a leaking point.
Start in the attic.
Take a roll of paper towels into the attic on a rainy day and press a paper towel against the wood that is above the wet area recommends roofer911.
Water testing for roof leaks if you can t find the cause of a leak from the attic or by visual inspection on the roof surface wait for dry weather and ask a friend to help you do a water test.
Tiny holes in shingles are sneaky because they can cause rot a leaky roof and other damage for years before you notice the obvious signs of a leak.
If you have an attic the easiest way to spot the leak is to up there on a rainy day.
On a nice day have a helper tap on the mark while you re on the roof.
Look for any exposed roofing nails.
Look for discoloration on wood sheathing or rafters caused by water.
Identifying the true location of roof leaks in the attic.
Small nail holes left behind from old vents satellite dish brackets or anything previously attached to the roof can allow water to enter and cause damage for years before leaking is noticed.
Roofing nails are found under the flap of the previous row of shingles.
Most noticeable to the eye are leaks caused by an object for example an errant nail that s managed.
Inspect the underside of the roof for objects that have pierced it or have been attached to it.
Water will reflect light so bring a flashlight along.
After the rain has stopped and it s sunny outside examine the exterior of your roof to look for problem areas that may be causing the leak.
Patch the nail or screw holes by slipping a piece of roof flashing underneath the shingle.
The other person goes inside the attic with a bucket and a strong light.
Find a roof leak when it s not raining.