Air leakage is the single largest source of energy loss in most homes—often accounting for 25-40% of heating and cooling costs. Even well-insulated homes can suffer from drafts, uneven temperatures, and high utility bills if air leaks aren't properly sealed.
Spray foam insulation provides comprehensive air sealing as part of every installation, but we also offer targeted air sealing services to address specific problem areas without full insulation replacement.
Common Air Leak Locations
Attic Penetrations
Recessed lights, electrical wiring, plumbing vents, and HVAC ducts create major air pathways into unconditioned attic spaces.
Rim Joists & Sill Plates
The junction between foundation and framing is often poorly sealed, allowing significant air infiltration at the floor level.
Windows & Doors
Gaps around window and door frames—not the windows themselves—are common air leak culprits.
Electrical & Plumbing Penetrations
Every outlet, switch, and pipe that penetrates an exterior wall is a potential air leak location.
Why Air Sealing Matters
Energy Loss
25-40%
from air leaks
Air Changes
Reduced
tighter envelope
Comfort
Improved
even temperatures
The Department of Energy recommends air sealing before adding insulation because it maximizes the effectiveness of your insulation investment.