Blower door testing
We measure how much air your home leaks, test duct leakage and take basic air quality readings. You get a written report.
Learn more about blower door testingOutside of the house
Home exterior sealing
We walk the outside of your home and seal the gaps, cracks and openings where outside air, dust and water get in: around pipes and vents, along trim and siding, at the roofline and around doors.
- Locally owned
- Free in-home inspection
- Written, upfront quotes
How it works
Close the gaps from the outside
Every house has openings in its outer shell: where pipes, wires and vents pass through the wall, where siding meets trim and the foundation, and along the roofline. Over time, caulk shrinks and cracks, and new gaps open up.
We walk the whole outside of the house, mark every gap we find and seal each one with the right material: exterior sealant for joints and cracks, backer rod for wider joints, low-expansion foam for larger openings, and new weatherstripping and door sweeps where the old ones are worn out.
Some openings are there on purpose. Brick weep holes let water drain out of the wall, so we never seal them shut. We fit each one with a vent insert that covers the opening and still lets water out. Soffit and attic vents stay open so the attic can breathe.
Up to 10%
ENERGY STAR's estimate of annual energy bill savings from air sealing and insulation.
Source: ENERGY STAR, seal and insulate
What's included
What we seal
Exterior walk-around
We check the whole outside of the house and mark every gap, crack and opening.
Pipes, wires and vents
Gaps around plumbing, electrical, dryer vents and A/C lines sealed where they enter the house.
Trim, siding and foundation
Open joints where siding, trim and the foundation meet sealed with exterior-grade sealant.
Roofline gaps
Gaps where the roof meets the walls closed off, with soffit and attic vents left open.
Doors and garage doors
Worn weatherstripping and door sweeps replaced so doors close tight.
Brick weep holes
Fitted with vent inserts that cover the opening and still let the wall drain.
How the job goes
From first call to finished
- 01
Walk the house
We go around the outside and mark every gap, crack and opening we find.
- 02
Quote in writing
You get a written list of what we'll seal and the price.
- 03
Seal
Each gap gets the right material: sealant, backer rod, low-expansion foam or new weatherstripping.
- 04
Walk through
We show you what was sealed and clean up before we leave.
Is this just caulking?
Caulk is part of it. We also use backer rod and low-expansion foam for wider gaps and replace worn door seals, so each gap gets the material that lasts.
Do you seal brick weep holes?
No. Weep holes let water drain out from behind brick, and sealing them can trap moisture in the wall. We fit them with vent inserts instead, which cover the opening and still let water out.
How do you find the leaks?
We walk the outside and check every penetration, joint and edge. Add a blower door test and we can find leaks you can't see from outside.
Should I seal the outside or the attic first?
Both matter. Attic air sealing stops leaks between your rooms and the attic. Exterior sealing closes gaps in the outer shell. We'll recommend where to start after the inspection.
Free quote
Get a free quote
Tell us about your home. We'll call to set up a free inspection and give you a written quote.
- We call you at the time you pick to set up your inspection.
- We inspect your attic, insulation and ductwork.
- You get a written quote with options and prices.