Depth for less money
Blown-In Cellulose & Fiberglass in Saginaw, MI
Sealed first, then blown to the R-value you choose.
- Free on-site estimates
- Written quote listing foam type, depth and R-value by area
- Rim joists, attic bypasses and moisture checked before we cover anything
When Blown-In Cellulose & Fiberglass Is the Right Call
Blown-in cellulose and fiberglass are the most economical way to reach R-49 or R-60 over an open attic floor, and the main way to insulate walls that are already closed. Many older Saginaw and Bay City houses have walls with little or no insulation and attics with a few inches of old fill. Blowing loose fill, after sealing, fixes both.
Cellulose
Made mostly from recycled paper treated for fire resistance. It packs densely, slows air movement better than loose fiberglass and is the usual choice for dense-pack walls. Fixr lists it at $1.75 to $3.80 per square foot.
Fiberglass
Lighter and less likely to settle, with Fixr listing $1.65 to $2.60 per square foot. Common in attics of newer homes.
Dense-pack walls
We drill small holes, from inside or outside depending on the finish, and pack cellulose into each wall bay. Balloon-framed houses need the tops and bottoms of the cavities blocked so the fill does not disappear into the floor system.
Seal first
Loose fill does not stop air. We seal attic bypasses with foam and sealant before blowing, and install baffles so the soffit vents stay open.
What This Covers
Blown-in options.
Attic top-up
Seal, baffle and blow to R-49 or R-60 with depth markers.
Dense-pack walls
Cellulose packed into closed walls through small holes.
Kneewall attics
Loose fill on the floors behind kneewalls after sealing.
With foam
Foam to seal and loose fill on top for depth.
Published Blown-In Cellulose & Fiberglass Costs
| Job | Range and source |
|---|---|
| Blown-in, per sq ft | $1.00 to $2.80 (HomeGuide); $1.65 to $3.80 (Fixr) |
| Attic | $900 to $3,600 (HomeGuide); $1,750 to $5,500 for about 1,500 sq ft (Fixr) |
| Exterior walls | $1,900 to $7,800, or $1.10 to $3.70 per sq ft (HomeGuide); $2,000 to $4,000 (Fixr) |
| Dense-pack cellulose | $1.60 to $4.20 per sq ft (HomeGuide) |
| Fiberglass / cellulose | $1.65 to $2.60 / $1.75 to $3.80 per sq ft (Fixr) |
| Typical job | $800 to $3,000 (HomeGuide); $3,000 to $7,000 (Fixr) |
National ranges from HomeGuide (November 2025) and Fixr (August 2025). Depth, access, sealing and removal affect the total. We give you a written estimate after the visit, and it is the price.
How We Blow It In
1. Measure
Check existing depth and condition, and wall cavities.
2. Seal
Close bypasses and top plates; baffle the soffits.
3. Blow
Fill to the quoted depth, or dense-pack each wall bay.
4. Patch and clean
Plug and patch wall holes and clean up.
Blown-In Cellulose & Fiberglass Questions
How deep is R-60?
With loose fill it usually means well over a foot and a half, depending on the material. The quote lists depth and R-value.
Will cellulose settle?
Loose cellulose settles some, which is why we blow to a settled depth. Dense-packed walls are packed tight to limit settling.
Can you insulate walls from outside?
Yes, by removing a course of siding or drilling and plugging, depending on the siding.
Is there a rebate for wall insulation?
Consumers Energy's chart lists $125 for at least 500 square feet of above-grade wall for gas or combined customers. Check the current chart.
Blown-In Cellulose & Fiberglass Service Areas
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Get a Blown-In Cellulose & Fiberglass Estimate
Get a written blown-in quote.