Skip to content

Air Sealing

The pictures here show very clearly the common spots where warm air from inside the house can leak outside and cold air from outside can leak inside.

Leaks from ducts will not only waste money in heating or cooling, but will also introduce undesirable air into the living spaces from attics and crawlspaces which are typically not the cleanest environment.

The US Department of Energy research estimates that a typical 2000-sq ft home has cracks totally 3 miles long, which is about equivalent to having a 3-sq ft hole in the house.

Things to do:

  • Seal all joints between walls, stud, joists, ceiling, floors.
  • Seal around plumbing, ducts, recess lights, duct registers, duct returns, vents
  • Seal all ducts
  • Seal attic and crawlspace hatches with rubber seals
This forum provides you with resources about home renovation, improvement, makeover and repair topics such as air condition, bathroom remodel, construction, countertop selection, drainage, drought tolerant landscape, drought tolerant plants, finding contractors, flooring, furnace, gardening, home appliances, home insulation, kitchen design, kitchen remodel, landscape planning, mold removal, paint selection, plumbing, remodel planning, retrofit, roof tiles, solar hot water, solar panel, water conservation, and many others. While we focus on issues in California, particularly in the San Francisco Bay Area, San Jose, Oakland, Alameda, Campbell, Dublin, Hillsdale, Los Gatos, Marin, Orinda, Palo Alto, Sacramento, Santa Clara, Santa Cruz, Walnut Creek, most information is applicable in all parts of USA as well as the rest of the world.