Small gaps around doors and windows or in walls or floors may not seem like a big deal, but when it comes to your energy use, think of it this way: It’s like leaving a window wide open all year long.
Why air sealing is important.
Not only does it reduce your energy bill, it also reduces outside noise for a quieter, more comfortable home. Proper air sealing also provides temperature and humidity control, and improves indoor air quality by preventing allergens, dust, contaminants and insects from getting inside.
Getting a head start at home? Check out these tips.
- Always repair, clean and dry surfaces before caulking or glazing.
- Repair any roof leaks or moisture problems.
- In areas where air circulation is limited—less than .35 air changes per hour (ACH)—ask your Quality Contractor Network member about adding ventilation.
- If your home has any gas appliances or an attached garage, install a carbon monoxide monitor.
Good to know
- Use caulk for gaps smaller than ¼ inch.
- Use foam for gaps between ¼ and 1½ inches.
- Use a backer for gaps larger than 1½ inches.
Check with a professional.
You may be able to spot some air leaks by feeling around doors and windows, but the bigger problems are usually hidden in attics, basements or crawlspaces. That’s where our trained Quality Contractors from the CEMC Quality Contractor Network (QCN) come in. Your contractor can locate and address gaps around electrical wires, plumbing, ducts, chimneys, flue pipes and other places that aren’t visible.