Air Seal

Air Sealing Services

Drafty homes are unpleasant. Pure Eco seals the cracks and leakage points so indoor air stays comfortable — and your conditioned air stops escaping.

Get a Free Home Assessment (877) 870-7998

The important role of air seal

Air sealing is as important to stopping energy loss as insulation. In fact, you always want to air-seal a house or office before you place insulation over it — or you can lose significant R-value.

Air sealing eliminates cracks, crevices, and leakage points around windows, doors, vents, and other openings. The principle is simple: if you're heating or cooling a leaky building, you're wasting money and needlessly increasing your carbon footprint. Creating an air seal solves those problems and makes the building more comfortable to live in.

Pure Eco has been air-sealing homes and businesses for years. Call (877) 870-7998 for a free consultation and air-seal quote.

Benefits of professional air sealing

Lower monthly power bills

Close the leaks and conditioned air stays inside longer — the most obvious win most homeowners feel first on the next utility statement.

Faster, steadier comfort

Rooms heat and cool more quickly and hold the temperature you set. Drafts and hot/cold spots that insulation alone never fixed often trace back to air leakage.

Cleaner indoor air

Sealing reduces the outdoor dust, allergens, and attic/crawl-space air that gets pulled into living spaces every time the system runs.

Less moisture damage

Fewer leaks means less moisture buildup that feeds mold and mildew and damages drywall, baseboards, roof joists, and attic insulation.

The air-sealing process

Find the leaks

We use a blower door and/or visual inspection — dusty batts, dirty streaks on paint or carpet, and the tiny gaps most people never see — to map where air is actually moving.

Seal with the right material

Weatherstripping at exterior doors and operable windows. Caulk around frames. Foam sealant on larger gaps. Fire-resistant sealants and sheet metal around chimneys and heat-producing equipment.

Treat the whole house

The attic is usually priority one, but windows, doors, vents, outlets, and flues matter too. We close overlooked paths without unnecessary demo or reconstruction.

Insulate in the right order

Air seal first, then insulate. If existing insulation is in the way, we can remove it, seal, and reinstall — or remove worn material, seal, and put in new insulation in one sequence.

Where we install air sealing

The attic is usually the most important area — but windows, doors, vents, flues, outlets, and foundation lines can't be overlooked. We examine the whole place for every practical infiltration path.

Windows, doors, and operable openings that need weatherstripping or caulk
Recessed lights, outlets, and kitchen/bath exhaust fans without gaskets or covers
Plumbing stacks, wiring holes, and other attic-floor penetrations
Fireplace flues and gaps around chimneys or gas furnaces
Foundation lines where cement meets wood (basement or crawl space)
The attic hatch or pull-down stair — often uninsulated and unsealed

Attic air sealing & insulating

If you haven't insulated the attic yet, don't — until you protect it against air first. Insulation can lose as much as half of its effectiveness to leaks underneath it.

Already insulated but never sealed? We can test for attic air leaks, remove insulation as needed, close the leaks, and reposition the material. Replacing worn insulation anyway? We remove the old, air seal, then install the new.

How much can air sealing save?

Results vary, but it's not uncommon to see a substantial drop in energy waste from leakage. Per the U.S. Department of Energy, air leakage is a major driver of inefficiency in the average American home. Typical loss pathways break down roughly like this:

~30% Ceilings, floors, and walls

~20% Windows and doors

~15% Ductwork

~15% Fireplaces

~10%+ Plumbing penetrations

Small share Outlets, fans, and vents

Close the major draft sources and you keep conditioned air inside longer — so less of your money leaves with it.

Why choose Pure Eco

Our vision is to make California more affordable to live in by lowering bills and reducing the impact of burning fossil fuels. We combine experience, customer service, and environmental concern — with no hidden surprise fees, free upfront consultation and estimate, and a fully licensed, bonded, and insured crew that puts safety first.

We also help you identify applicable green incentives and rebates for weatherization and efficiency upgrades. Ask our staff about programs that may fit your project — or start with a free consultation at (877) 870-7998 .

Air sealing FAQs

Why should Pure Eco close the gaps around my house? +

Air gaps let heat and cold enter freely. Before we install new insulation, we close unwanted cracks and design controlled ventilation so air moves through the house the way it should — not through random leaks. Sealing supports the insulation and helps lower energy bills.

How is air leakage costing me money every day? +

Buildings need to breathe, but most homes — especially older ones — leak far more than they should. Ideally outdoor air replaces indoor air about once every three hours; many homes exchange all their air every hour or even every half hour. Wind makes it worse. That constant leakage makes temperature control expensive and uncomfortable, and it can create moisture and indoor-air-quality problems.

What else should be done with air sealing to improve efficiency? +

Air sealing and insulation need each other. Sealing alone or insulating alone underperforms. Once a building is sealed, controlled ventilation through vents and fans keeps indoor air quality healthy. We often pair sealing with attic insulation, ventilation upgrades, attic cleaning, or rodent proofing as needed.

Should I air seal before I insulate the attic? +

Yes. Insulation can lose a large share of its effectiveness when air leaks sit underneath it. If you already have insulation and suspect leaks, we can test, remove material as needed, seal, and put insulation back. If you're replacing worn insulation anyway, we remove, seal, then install new.

Start air sealing your building

We'll find the leaks, seal them correctly, and sequence insulation so the work actually performs. Call (877) 870-7998 for a free no-obligation air sealing consultation and accurate quote.

Get a Free Consultation (877) 870-7998