Air Sealing & Blower Door Testing in Columbia, TN
Measure the leakage, seal the paths that matter, and find out whether you need foam at all.
A blower door puts the house under pressure and measures how much air moves through the shell, which turns a vague complaint into a number. Paired with a walk of the attic and the band joist, it identifies where the air is actually going: top plates, chases, recessed lights, the attic hatch, the gap behind a bathtub on an exterior wall.
This belongs before a foam quote rather than after it. A meaningful share of houses that feel drafty and expensive have a handful of large, cheap-to-seal leakage paths and adequate insulation, and sealing those is a different order of cost from insulating the roof deck. Running the test first is also the only way to demonstrate afterwards that the work changed anything.
Typical cost: $350 - $700 for a test; $900 - $3,500 for targeted sealing work
When air sealing and blower door testing is the right call
- Before committing to any large insulation job
- Drafts, uneven temperatures, or dust that keeps coming back
- Verifying work that has already been paid for
- New construction or a gut renovation, for a baseline number
Other services
Common questions
Is the test worth paying for on its own?
Frequently, yes. It is the cheapest way to find out whether your problem is insulation or leakage, and those have very different price tags attached.
Can a house be sealed too tightly?
It can be sealed tighter than it passively ventilates, and then it needs mechanical ventilation. That is a normal, inexpensive addition. The problem is never the tightness itself, it is tightening without ventilating.
Get a quote on your spray foam insulation
Call and tell us what is going on with your spray foam insulation and where the property is. You will get a straight answer on what it actually needs, from a licensed contractor working Mecklenburg County.
Call (980) 944-8316