Greater Houston
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.
Lower Energy Bills
Stop air leaks and keep HVAC from running overtime in Houston summers.
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 You Need This Service
- 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 Process
Every project follows the same proven process — free assessment to final documentation.
- 01
Inspection: identify leaks, duct issues, and insulation condition.
- 02
Spray Foam Install: apply foam to deck or roofline depending on strategy.
- 03
Prep: mask, stage ventilation, and protect mechanicals.
- 04
Air Seal: seal penetrations, top plates, and chases.
- 05
QA & Cleanup: thickness checks, curing, and spotless site.
Frequently Asked Questions
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.
Serving Greater Houston
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Licensed, insured, and 0% interest financing available. Monday through Saturday scheduling.