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INSULATION

Mineral wool, recycled denim, sheep's wool and cellulose hit the same R-values as fiberglass with recycled or bio-based content and no formaldehyde. For performance and air sealing, see Energy Efficiency.

🏠 Choosing finishes for a tight, well-sealed house? The EPA's Indoor airPLUS program spells out which material specifications actually protect indoor air quality — a good baseline before you shop.

Mineral Wool, Denim & Bio-Based Insulation

Prices and ratings from Amazon.com as of September 9th, 2026 — subject to change.

Rockwool ProRox Mineral Wool Board, 24 x 48 x 1 in, 10-Pack

$178.10

4.8

★ 

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Recycled Cotton & Denim Sound-Absorbing Insulation Batts

$145.99

4.4

★ 

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Mineral Wool Insulation Board, 24 x 24 x 2 in, 5-Pack

$79.10

4.8

★ 

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Rockwool ProRox Mineral Wool Board, 24 x 24 x 1 in, 10-Pack

$89.00

4.8

★ 

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Roxul Mineral Wool Board, 1 in, 2 x 4 ft, 8 lb Density, 10-Pack

$199.98

4.6

★ 

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GlikCeil Mineral Wool Insulation Board, 24 x 24 x 1.6 in, 8-Pack

$130.19

4.9

★ 

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Rockwool ComfortBatt R30 Stone Wool Batt, 23 x 47 in (24 in OC)

$111.97

3.6

★ 

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Rockwool Foil-Faced Stone Wool Panels, 2 in, 8 lb Density

$259.70

4.3

★ 

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Mineral Wool Soundproofing & Thermal Insulation Batts

$178.99

2

★ 

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Rockwool ComfortBatt R30 Stone Wool Batt, 15.25 x 47 in (16 in OC)

$84.32

3.6

★ 

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Rockwool Foil-Faced Stone Wool Panels, 3 in, 8 lb Density

$259.98

5

★ 

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