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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 October 23rd, 2026 — subject to change.

Frost King No Itch Natural Cotton Insulation, 16 x 48 in

$11.38

4.4

★ 

ROCKWOOL Rockboard 60 Mineral Wool Rigid Insulation Board

$122.99

4.8

★ 

GlikCeil Acoustic Rock Wool Insulation Board, 2 in Thick

$116.99

​

★ 

GlikCeil Mineral Wool Insulation Board, 48 x 24 x 1 in, 4-Pack

$111.59

4.9

★ 

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

$207.80

4.6

★ 

Recycled Cotton & Denim Sound-Absorbing Insulation Batts

$145.99

4.4

★ 

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

$104.84

4.6

★ 

Mineral Wool Insulation Board, 48 x 24 x 1 in, 8 lb

$23.29

​

★ 

Rockwool ProRox Mineral Wool Board, 24 x 48 x 2 in, 5-Pack

$207.80

4.6

★ 

Mineral Wool Insulation Board, 1-1/2 x 48 x 24 in, 8 lb Density

$45.47

1

★ 

Rockwool ProRox SL 960 Mineral Wool Board, 4 in, 8 lb Density

$227.90

​

★ 

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

$108.80

4.6

★ 

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

$199.98

4.6

★ 

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

$128.79

4.9

★ 

GlikCeil Mineral Wool Acoustic Board, Foil-Faced, 24x24x1.6 in, 4-Pack

$80.99

​

★ 

Mineral Wool Insulation Board, 1 x 48 x 24 in, 8 lb Density, 10-Pack

$130.56

​

★ 

Mineral Wool Insulation Board, 1 x 48 x 24 in, 8 lb Density, 2-Pack

$78.00

​

★ 

Rockwool ProRox Mineral Wool Board, 24 x 24 x 2 in, 5-Pack

$84.05

4.7

★ 

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

$111.97

3.6

★ 

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

$259.70

4.3

★ 

Mineral Wool Soundproofing & Thermal Insulation Batts

$178.99

2

★ 

Roxul ProRox SL940 Mineral Wool Board, 6 lb Density

$240.60

4.6

★ 

Rockwool Roxul Mineral Wool Board, 3 in x 2 ft x 4 ft, 5-Pack

$245.70

4.6

★ 

Rockwool ProRox Mineral Wool Board, 12 x 12 x 2 in, 3-Pack

$37.52

4.6

★ 

GlikCeil Mineral Wool Insulation Board, 24 x 24 x 1.6 in, 4-Pack

$79.11

4.9

★ 

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

$84.32

3.4

★ 

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

$259.98

5

★ 

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