Weatherization & Drafts
Handis weatherization is whole-envelope air sealing on a Seattle home in one visit — weatherstripping at windows and attic access, door sweeps at exterior thresholds, attic-hatch insulation, foam gaskets on exterior outlets, seasonal window film, and crawlspace vent covers, from $120 per door or window to $1,200 for a comprehensive draft sweep. Beyond the price floor lives the felt cost — the cold draft you can feel from across the room in January, the attic-hatch outline you can trace with the back of your hand, the outlet on the exterior wall that blows cold air at the plug, the single-pane window the previous owner never upgraded, the open crawlspace vents that turn the floor into a refrigerator deck from November through March. Weatherization is the trade for the slow energy losses no one sees on a thermostat — together they account for roughly 25 to 40 percent of the heating load on a typical Seattle home per Department of Energy field studies.
Services
Weatherization & Drafts Pricing
Final pricing depends on the count of doors, windows, outlets, and vents on the actual house, and on whether the visit covers a single sub-category or a whole-home sweep. Multi-service visits are cheaper per item than booking each separately. Request a free estimate for an accurate quote.
Tell us where you can feel drafts — we will quote the full envelope, not one door at a time.
Why Choose a Professional for Whole-Home Weatherization?
Most weatherization calls trace back to the same blind spots — the homeowner can feel the cold draft under the front door, so the front door gets sealed and the bill barely moves. The real losses are at the attic hatch (often the single biggest leak in the house), at the 40 outlet boxes on exterior walls (each a small chimney), at the windows that never close fully, and at the crawlspace vents the previous owner left open year-round. After a few hundred Seattle weatherization visits — craftsman bungalows, 1950s ramblers, 1990s split-levels, new construction with builder-grade seals — every one of those losses has a fix. We walk the whole envelope on every visit, not just the door you called about.
Estimate
Tell us the home age, the rooms with active drafts, the count of doors and windows, and whether the attic hatch and crawlspace vents have ever been addressed — we will send back a clear estimate.
What Our Customers Say
Recent weatherization reviews from verified Seattle customers.
1962 rambler in Wedgwood, single-pane windows on the north side, gas bill running $280 in December even with the thermostat at 64. Tech walked the whole house in 40 minutes, flagged the attic hatch (uninsulated plywood resting on trim), the outlet boxes on the north wall (every one of them blowing air at the plug), and three windows that no longer sealed. Did the work in one afternoon. December gas dropped to $215 the following year — same thermostat setting.
1924 craftsman in Phinney Ridge, original double-hung windows we did not want to replace for historic-character reasons. Tech installed V-strip on every sash, magnetic interior storm panels on the four worst windows, and rigid-foam panels in the attic hatch. The bedrooms that were always cold are normal now. He never tried to sell us replacement windows.
Pre-winter comprehensive package on our 1995 split-level. Door sweeps on the front, back, and garage-to-house door, foam gaskets on 38 outlets across the exterior walls, four crawlspace vent covers labeled and stored, attic hatch insulated. Took most of a day. The kids' bedrooms over the garage are no longer freezing in January.
New baby coming, wanted the nursery to stop being 6 degrees colder than the rest of the house. Tech traced the cold to two single-pane basement awning windows directly under the nursery, a missing door sweep on the back slider, and outlet boxes on the exterior wall. Window film on the awnings, new sweep, foam gaskets behind every plate on that wall. Nursery now matches the rest of the upstairs.
Crawlspace vent covers. The contractor who built our addition left four foundation vents open year-round and the kitchen floor was unwalkable in socks December through February. Tech sized custom foam covers to each vent, labeled them by location, gave us a written schedule for putting them on in November and pulling them in March. Floor is now the same temperature as the rest of the room.
Frequently Asked Questions
Common questions about whole-home weatherization, draft sealing, and seasonal envelope work in Seattle.