Checking Attic Leaks

Check for air leaks.

Checking attic leaks. Attic condensation is due to humid air leaking or vented into the attic. How to check a leaking duct in the attic. Insulation is responsible for keeping warm air inside your living space and out of the attic where it can lead to condensation. Investigate appliances and fixtures.

Be sure to start small. Examine the entire attic roof underside surface for evidence of water intrusion. Check the duct joints. If your hvac system isn t blowing air when you re checking your ductwork you won t be able to locate less obvious leaks.

Where you see light shine through that spot has an air leak. If you don t want to wait for rain to look for the leak try bringing the garden hose up on the roof. You may see stained or discolored wood areas that will lead you to the source of the leak. See basic ladder safety if you intend to use a ladder.

Review the active leak and note the surface where the leak is dripping from. Have a helper stationed in the attic with a flashlight looking for moisture. Don t go crazy with the water. Vent humid air from kitchens and bathrooms to the outside instead of the attic to avoid this problem.

Run the water over the place where you think the leak might be located. If you do not have built in pull down stairs then use a sturdy ladder to access the attic area. If you have taken the proper steps to remove excess humid air from your home and you re still having condensation issues it might be time to check the attic insulation. Inspect your attic insulation.

Leaking air ducts can lead to a significant loss of heated and cooled air. Visual inspection for gaps and cracks. The spots where two air ducts connect are common places for leaks to occur. If the water meter test indicates a leak inside your home check the cabinets under the kitchen laundry and bathroom sinks to make sure they re dry.

The location of the actual entry point of the water into the attic space may be slightly different than where the leak. While lights are on in the home observe from the attic crawlspace or basement any light from the interior of the house shining through gaps and cracks. Go into your attic and locate the source of the leak on the underside of the roof deck using the measurements taken from your home s living space.