Insulation

Attic Air Sealing in Jersey City

Insulation slows heat, but it doesn't stop air. Warm air escaping into the attic through hidden gaps is often the single biggest energy leak in a house, and sealing it comes first.

Dark attic with daylight shining in through gaps near a ladder

Stop Drafts Before You Insulate for Jersey City homes

Every wire, pipe, flue, recessed light and wall top that passes into the attic leaves a gap. Together they add up to a hole the size of a small window, and in winter warm air pours out through it, pulling cold air in at the bottom of the house. Fiberglass insulation lying on top filters that air but barely slows it down.

We measure air leakage with a blower door, then seal gaps at top plates, plumbing and wiring penetrations, chimney and flue chases with fire-rated materials, and around the attic hatch. A final blower door test shows how much leakage we've eliminated, and the attic is then ready for new insulation.

Signs it's time to call

  • Drafty rooms even with closed windows
  • Dirty, darkened spots on attic insulation where air leaks through
  • Ice dams on the roof in winter
  • Unsealed recessed lights in top-floor ceilings
  • Planning to add attic insulation

How we do it

  1. Blower door test to measure whole-house air leakage
  2. Insulation moved aside to locate bypasses
  3. Gaps sealed with foam, caulk and fire-rated materials
  4. Attic hatch weatherstripped and insulated
  5. Final blower door test with before-and-after results

What you get

Fewer drafts

Stopping the stack effect makes the whole house feel tighter.

Bigger savings

Air sealing multiplies the benefit of any insulation you add.

Fewer ice dams

Less warm air reaching the roof deck in winter.

Many Jersey City customers pair attic air sealing with attic insulation or blown-in insulation, so both can be handled in one visit.

Have a question about your home? Send us the details and we'll reply with honest advice and a written quote, or call (201) 459-9050 any time.

FAQ

Attic Air Sealing questions, answered

Why seal before insulating?

Once new insulation is in place, the leaks underneath are buried and much harder to reach. Sealing first means every dollar spent on insulation works harder.

What is a blower door test?

A calibrated fan is mounted in an exterior doorway to depressurize the house. Measuring the airflow needed tells us how leaky the home is, and lets us find and verify leaks.

Can sealing make my house too tight?

Older homes are rarely at risk, but after sealing we check that fuel-burning appliances vent properly. If ventilation is needed, we'll recommend it.

Is air sealing eligible for incentives?

Air sealing is often included in New Jersey energy-efficiency programs alongside insulation. We'll help you check current eligibility.

Row of brownstone homes in Jersey City

Book attic air sealing in Jersey City

Tell us what's going on and we'll get back to you fast with honest advice and a free written quote. Emergencies? We're on call around the clock.

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