Seal air leaks

Why? Air leaks can be a large source of air loss in your home. This raises your heating and cooling costs and can make your home less comfortable.
Step-by-step:

 

  1. Purchase caulk and/or polyurethane foam appropriate for the surfaces you plan to seal. Check the label for its best uses and whether it is appropriate for indoor or outdoor use. Some caulks are specially designed for small leaks along the edges of walls. Foams are more appropriate for larger gaps and holes.
  2. Find leaks. To find leaks, try to follow drafts of air to their source on the wall, floor, ceiling, and around ductwork. Watching how the smoke of a smoke pen or burning incense flows is one way to check for leaks and drafts.
  3. Check where different materials meet. Look where brick meets wood siding, between the foundation and walls, between the chimney and siding, where gas and electricity lines exit your house, and where there are any penetrations through the floor from unheated crawlspaces and basements.
  4. Seal any cracks you find. Use the right sealant for each leak.

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