If you have a leak inside of your home, it can be difficult to find where the leak is actually coming from when you get up on your roof. Here are three tricks for finding the location of a leak on your roof.
#1 Look For Areas Where The Roof Is Penetrated
The first thing you need to do is get up on your roof and look at the area of your roof that is uphill from where the leak started. Generally, the leak starts above where the water is getting into your home.
As you look at your roof above the area where the leak occurred in your home, check for areas where the roof is penetrated by something else. Most leaks on your roof occur around roof vents, dormers, chimneys and other things that come up through your roof. Leaks develop in these areas because the shingles have to be cut around the object and sealed. Area where there are uninterrupted shingles don't develop leaks nearly as often as areas where things penetrate through your roof.
The leak may originate to the left or right of where it is located inside of your house. Try and see if any of these areas have loose shingles or if the sealant around these objects have worn away. If they have, you may have found the source of the leak inside of your home.
#2 Use Running Water To Find The Leak
If you can't find where the leak is, you can identify the leak by using running water. Take a hose up to your roof and dampen the entire area where the leak is occurring. Then, run water for several minutes in one specific location, such as the side of your chimney.
While you are doing this, you are going to need someone inside checking for water dripping down through the roof. Run the hose for several minutes in one location before moving to another. Make sure your spotter inside knows when you move the hose. Eventually, water should make its way into your home and your spotter inside should be able to tell you when the water appeared, and combined with where the hose was at that time, should help you figure out where the leak is located.
#3 Check Inside Of Your Attic
Another easy way to check for where the leaks are coming inside of your home is to get into your attic or attic crawlspace. When you go into your attic, take a flashlight with you. Use the flashlight to examine the ceiling. Start at one corner of the attic and work your way up and down the entire length of the roof to identify leaks. If there are leaks, you will see water stains, mold, or black marks on the underside of your roof. This will help you determine better where the leak is coming from when you get to your roof.
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