Checking Attic Leaks

Where you see light shine through that spot has an air leak.

Checking attic leaks.

Review the active leak and note the surface where the leak is dripping from. Attic condensation is due to humid air leaking or vented into the attic. If you don t want to wait for rain to look for the leak try bringing the garden hose up on the roof. The spots where two air ducts connect are common places for leaks to occur.

How to check a leaking duct in the attic. See basic ladder safety if you intend to use a ladder. If your hvac system isn t blowing air when you re checking your ductwork you won t be able to locate less obvious leaks. Examine the entire attic roof underside surface for evidence of water intrusion.

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. Inspect your attic insulation. The location of the actual entry point of the water into the attic space may be slightly different than where the leak. 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.

Check for air leaks. 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. This air leaks into your attic space and never reaches your living area which. Be sure to start small.

Investigate appliances and fixtures. Just be careful when you get up walk crawl around in an att. Have a helper stationed in the attic with a flashlight looking for moisture. Check the duct joints.

Run the water over the place where you think the leak might be located. Leaking air ducts can lead to a significant loss of heated and cooled air. If you do not have built in pull down stairs then use a sturdy ladder to access the attic area. Don t go crazy with the water.

Visual inspection for gaps and cracks. 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. Vent humid air from kitchens and bathrooms to the outside instead of the attic to avoid this problem.