Fiberglass Blown-In (Attics)
High coverage, non-combustible, excellent $/R for large attics. Great for top-offs over older batts.
Fiberglass & Blown-In Insulation in Houston, TX
Add comfort, cut energy waste, and quiet the home with professional fiberglass blown-in (loose-fill) or fiberglass batts. Phantom Foam handles attic top-offs, wall dense-pack retrofits, and hybrid air-seal + blown-in systems across Houston, The Woodlands, Conroe, Katy, Cypress, Spring, and nearby.
What Is Fiberglass Blown-In (Loose-Fill)?
Blown-in fiberglass is a soft, fluffy insulation that’s blown into attics or wall cavities to fill every space. It’s ideal for improving R-value in older homes, sealing small gaps, and creating a uniform thermal layer without major remodeling. Phantom Foam also installs fiberglass batts and hybrid air-seal + blow systems for the most energy-efficient results.
Why Houston Homeowners Choose Blown-In Insulation
Superior Coverage
Loose-fill blankets the attic and reaches irregular spaces better than many batts.
Speed & Value
Fast install and excellent $/R-value for big comfort gains on a budget.
Sound Dampening
Dense-pack walls and ceilings noticeably reduce room-to-room noise.
Hybrid Options
Air-seal + baffles + dams first, then blow to depth for best real-world performance.
Houston R-Value Targets & Typical Depths
Targets below fit Houston’s climate; your exact spec depends on house design and code cycle.
| Area | Recommended R-Value | Approx. Blown-In Depth* | Notes |
|---|---|---|---|
| Attic | R-38 to R-49 | ~13–18 in (typical fiberglass) | Air-seal, add baffles and dams first. |
| Walls (dense-pack) | R-13 to R-15 (2×4), higher for 2×6 | Dense-pack to manufacturer spec | Retrofit without full drywall removal. |
| Floors over unconditioned | R-25 to R-30 | Varies (batt or net-and-blow) | Seal rim joists; guard against wind-wash. |
*Depth varies by product density and settled thickness; we install to manufacturer coverage charts and local code.
Material Options We Install
Fiberglass Dense-Pack (Walls)
Drill-and-fill dense-pack boosts comfort and sound without major demo.
Fiberglass Batts
Best for accessible joist bays, knee walls, and floors when installed Grade I with full contact.
Hybrid: Air-Seal + Blow
Seal top plates, cans, chases, and hatches first—then blow to depth for top performance.
Our 6-Step Install Process
- Inspect & Measure: Thermal scan, ventilation review, depth checks.
- Prep & Protect: Cover pathways, isolate mechanicals, protect fixtures.
- Air-Seal: Seal top plates, chases, bath fans, attic hatches; install rulers and dams.
- Ventilation: Add/extend baffles for soffit intake; verify exhaust paths.
- Blow to Spec: Install per manufacturer coverage charts and settled thickness.
- Verify & Clean: Depth photos/ruler shots, walkthrough, and cleanup.
Typical Pricing
Every home is different; these planning ranges cover most jobs:
- Attic blown-in: ~$1.00–$1.80 / sq ft (scope-dependent).
- Wall dense-pack: ~$2.00–$3.50 / sq ft of wall area (access/finishes affect cost).
- Hybrid air-seal + blow: Custom—based on penetrations, baffles, and dams.
Fiberglass vs. Spray Foam: When to Choose Which
| Feature | Fiberglass (Blown-In / Batt) | Spray Foam |
|---|---|---|
| Air Sealing | Moderate; best paired with air-sealing | Excellent (especially closed-cell) |
| $ / R-Value | Lower cost; great for large attics | Higher upfront; top performance |
| Moisture | Needs good ventilation & air-seal | Closed-cell adds moisture/vapor control |
| Best Use | Attic top-offs, wall retrofits, sound | Conditioned attics, problem air leaks |
Serving Greater Houston
Houston • The Woodlands • Conroe • Katy • Cypress • Spring • Sugar Land • League City • Pearland • Tomball • Magnolia • Montgomery • Richmond • Rosenberg
Fiberglass & Blown-In FAQ
How much insulation should my Houston attic have?
Most homes benefit from R-38 to R-49 in the attic. We verify ventilation and air-seal, then blow to spec so you get the full R-value.
Can you add blown-in over old batts?
Yes. We level existing batts, air-seal leaks, add baffles and dams, then blow to depth. Mixing materials is common when installed correctly.
What’s the difference between batts and blown-in?
Batts are pre-cut blankets for open bays; blown-in is loose for better coverage in attics and dense-pack wall retrofits. We choose based on access and goals.
Will this help with noise?
Yes—especially dense-pack walls and ceiling cavities between floors.
Do you handle code and documentation?
We install to manufacturer coverage charts and local code, and provide ruler photos/depth checks for proof of performance.