Lower Energy Bills
Stop air leaks and keep HVAC from running overtime in Houston summers.
Attic Insulation & Air Sealing in Greater Houston
In Houston’s climate, your attic is the number one source of energy loss. Phantom Foam seals every crack and insulates the attic plane so heat, humidity, and dust stay out—and comfort stays in. The result? Lower bills, fewer hot/cold spots, and a quieter, healthier home.
Consistent Comfort
No more hot upstairs, cold downstairs—air sealing keeps temps balanced.
Cleaner Indoor Air
Block attic dust, pollen, and insulation fibers from leaking into living spaces.
Longer HVAC Life
Sealed, insulated attics reduce load and extend the life of heating/cooling equipment.
Why Attic Air Sealing Matters
Most homes leak conditioned air into the attic through recessed lights, top plates, plumbing penetrations, and duct chases. Fiberglass alone does not stop this leakage. Spray foam seals these gaps, combining insulation and air barrier in one step for maximum performance.
- Air leakage = 25–40% of typical energy loss
- Foam creates a continuous thermal and air barrier
- Closed-cell adds vapor control in humid conditions
Typical Attic Spray Foam Assemblies
- Vented Attic (floor deck): Open-cell 8–10" between joists + sealed penetrations
- Unvented Attic (roofline): Closed-cell 2–3" or open-cell 7–9" on underside of roof deck
- Ducts in Attic: Foam helps cut duct losses and prevent condensation
- Kneewalls & Chases: Air-sealed and foamed to eliminate bypasses
We confirm moisture, code, and HVAC sizing before recommending vented vs unvented strategies.
Signs Your Attic Needs Upgrades
- Hot rooms upstairs / uneven temps
- High energy bills despite running AC constantly
- Dusty air or insulation particles in living spaces
- Condensation on ducts or equipment in attic
- Visible gaps around light fixtures, pipes, or wiring
Our Attic Sealing & Foam Process
- Inspection: identify leaks, duct issues, and insulation condition.
- Prep: mask, stage ventilation, and protect mechanicals.
- Air Seal: seal penetrations, top plates, and chases.
- Spray Foam Install: apply foam to deck or roofline depending on strategy.
- QA & Cleanup: thickness checks, curing, and spotless site.
Request an Attic Insulation Quote
Fast scheduling across Greater Houston.
Attic Insulation & Air Sealing — FAQ
Should I insulate the attic floor or roofline?
Depends on whether ducts/air handlers are in the attic. Roofline creates a conditioned attic; floor deck works if attic is only storage.
How thick does foam need to be?
Open-cell is often 7–10" on roof decks; closed-cell 2–3". Floor decks vary but must meet code R-value.
Does spray foam stop air leaks?
Yes—that’s its main advantage over fiberglass and cellulose. It insulates and air seals in one step.
Will this reduce dust in my home?
By sealing attic bypasses, foam reduces the amount of attic dust and allergens entering living areas.
Is an unvented attic safe in Houston?
Yes, if installed correctly. Closed-cell controls vapor; HVAC sizing and ventilation are checked first.