Failing a blower door test late in construction is frustrating and expensive. Knowing where leaks commonly hide helps builders get it right the first time.
Rim Joists and Sill Plates
The band of framing where the floor meets the foundation is a classic leakage point. Spray foam or careful sealing here makes a measurable difference.
Top Plates and Penetrations
Wherever wiring, plumbing, and ductwork pass through top plates and into the attic, air finds a path. These penetrations should be sealed before insulation goes in.
Windows, Doors, and Recessed Lights
Gaps around rough openings and non rated recessed fixtures leak significantly. Proper flashing, sealing, and airtight fixtures solve most of these issues.
Attic Access and Mechanicals
Attic hatches, whole house fans, and mechanical chases are often overlooked. Weatherstripping and dedicated air barriers keep them tight.
Test Early to Avoid Surprises
A preliminary test before drywall lets you find and fix leaks while they are still accessible. We offer mid construction testing to keep your project on track. Get in touch to schedule.