R-Value (per inch)

Air Permeance

Vapor Permeance

Water Resistance

Flame Spread Index

Compressible Strength

Noise Reduction

Open Cell SPF
(0.5lb)

View

3.9

Impermeable

Permeable

None

25 | 200 Smoke spread

Highly Compressible

STC 39

R-Value (per inch)

Air Permeance

Vapor Permeance

Water Resistance

Flame Spread Index

Compressible Strength

Noise Reduction

Closed Cell SPF (2.0lb)

View

6.7

Impermeable

Semi-Permeable

High

2325 | 165 Smoke spread

35 psi

STC 28

R-Value (per inch)

Air Permeance

Vapor Permeance

Water Resistance

Flame Spread Index

Compressible Strength

Noise Reduction

Roofing Foam
(3.0lb)

View

6.7

Impermeable

Impermeable

Waterproof

30 | 500 Smoke spread

55 psi

STC 23

R-Value (per inch)

Noise Reduction

Fire Resistivity

Water Resistance

Mold Resistance

Vapor Permeance

Air Permeance

Fiberglass Batt

View

3.9

STC 55

Fireproof

None

None

Permeable

Permeable

R-Value (per inch)

Noise Reduction

Fire Resistivity

Water Resistance

Mold Resistance

Vapor Permeance

Air Permeance

Mineral Wool

View

3

STC 38

Minimal

Available in waterproof variants

Does not harbor growth

Permeable

Permeable

R-Value (per inch)

Noise Reduction

Fire Resistivity

Water Resistance

Mold Resistance

Vapor Permeance

Air Permeance

Blown Cellulose

View

3.5

SYC 44

Impermeable

Waterproof

30 | 500 Smoke spread

55 psi

STC 23

R-Value (per inch)

Air Permeance

Vapor Permeance

Water Resistance

Flame Spread Index

Compressible Strength

Noise Reduction

Roofing Foam (3.0lb)

View

6.7

Impermeable

Impermeable

Waterproof

30 | 500 Smoke spread

55 psi

STC 23

R-Value (per inch)

Air Permeance

Vapor Permeance

Water Resistance

Flame Spread Index

Compressible Strength

Noise Reduction

Open Cell SPF (0.5lb)

View

3.9

Impermeable

Permeable

None

25 | 200 Smoke spread

Highly Compressible

STC 39

R-Value (per inch)

Air Permeance

Vapor Permeance

Water Resistance

Flame Spread Index

Compressible Strength

Noise Reduction

Closed Cell SPF (2.0lb)

View

6.7

Impermeable

Semi-Impermeable

High

2325 | 165 Smoke spread

35 psi

STC 28

1.

Spray Foam Formulations

A high-performance mode of insulation, spray foam achieves superior thermal and moisture performance through conforming to
whatever substrate it is sprayed against. Available in open cell (water blown) and closed cell (chemical blown) varieties, spray foam
is the ideal choice for any build with irregularities in the framing or envelope. Higher density closed cell foams are often utilized in
situations require top thermal performance and waterproofing.

A high-performance mode of insulation, spray foam achieves superior thermal and moisture performance through conforming to whatever substrate it is sprayed against. Available in open cell (water blown) and closed cell (chemical blown) varieties, spray foam is
the ideal choice for any build with irregularities in the framing or envelope. Higher density closed cell foams are often utilized in situations require top thermal performance and waterproofing.

R-Value (per inch)

Noise Reduction

Fire Resistivity

Water Resistance

Mold Resistance

Vapor Permeance

Air Permeance

Mineral Wool

View

3

STC 38

Minimal

Available in waterproof variants

Does not harbor growth

Permeable

Permeable

R-Value (per inch)

Noise Reduction

Fire Resistivity

Water Resistance

Mold Resistance

Vapor Permeance

Air Permeance

Blown Cellulose

View

3.5

STC 44

Minimal

None

None

Permeable

Reduces airflow when wet-blown

R-Value (per inch)

Noise Reduction

Fire Resistivity

Water Resistance

Mold Resistance

Vapor Permeance

Air Permeance

Fiberglass Batt

View

3.9

STC 55

Fireproof

None

None

Permeable

Permeable

R-Value (per inch)

Air Permeance

Vapor Permeance

Water Resistance

Flame Spread Index

Compressible Strength

Noise Reduction

Open Cell SPF (0.5lb)

View

3.9

Impermeable

Permeable

None

25 | 200 Smoke spread

Highly compressible

STC 39

Closed Cell SPF (2.0lb)

View

6.7

Impermeable

Semi-impermeable

High

2325 | 165 Smoke spread

35 psi

STC 28

Roofing Foam (3.0lb)

View

6.7

Impermeable

Impermeable

Waterproof

30 | 500 Smoke spread

55 psi

STC 23

2.

Fibrous Insulation

Traditional insulation usually employs a soft-spun or rigid fiber material that is hand-installed or blown into framing enclosures.
The most common insulation types are fiberglass (silicate composite material) and cellulose (recycled wood pulp), but increasing
mineral fiber (a product of stone or slag processing) is a popular option for fire-proofing and sound absorption.

R-Value (per inch)

Noise Reduction

Fire Resistivity

Water Resistance

Mold Resistance

Vapor Permeance

Air Permeance

Fiberglass Batt

View

3

STC 38

Minimal

None

None

Permeable

Permeable

Mineral Wool

View

3.9

STC 55

Fireproof

Available in waterproof variants

Does not harbor growth

Permeable

Permeable

Blown Cellulose

View

3.5

STC 44

Minimal

None

None

Permeable

Reduces airflow when wet-blown

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© 2025 Mach Insulation. All rights reserved.

© 2025 Mach Insulation.

All rights reserved.