United States / Build / SOL-R-SKIN Class A thermal roof underlayment assemblies

SOL-R-SKIN Class A thermal roof underlayment assemblies

Name: SOL-R-SKIN Class A thermal roof underlayment assemblies
Brand: International Insulation Products

This is a listed roofing assembly. Listing 8180-2283:0501. This site cites ASTM E108 / UL 790. Match the model and orientation.

Kind: listed-assembly. Brand: International Insulation Products. Listing evidence: OSFM WUI handbook 2026-08-25. Page reviewed 2026-08-25. JSON (CC BY 4.0)

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Dual BML identifiers 8180-2283:0501 and 4310-2283:0500 are 2 listings on this record, and they are not interchangeable. ASTM E108 is the test standard on attributes.

Warnings say Class A is assembly-specific, not an inherent rating for every roof placed over SOL-R-SKIN, and to match the exact BML listing, deck, seam tape, underlayment attachment, roof covering, battens, fasteners, and slope.

Lot comparison has to pick which of those two BML rows is the comparable object.

Documented attributes

Each value below points to its field-level manufacturer, official-listing, test-report, or standard-body evidence.

Attribute	Value	Evidence source
Form
Assembly role	roof underlayment	SOL-R-SKIN thermal roof underlayment (manufacturer)
Fire
Fire rating	class a	SOL-R-SKIN thermal roof underlayment (manufacturer)
Test standard	astm e108	SOL-R-SKIN thermal roof underlayment (manufacturer)

Where this product goes

FA Exhibit ROF-100. The roof system, named

Program	ID / source	Evidence date	Expires	Status
CAL FIRE BML	8180-2283:0501 · Search BML for 8180-2283:0501	2026-08-25	2027-06-30	listed
CAL FIRE BML	4310-2283:0500 · Search BML for 4310-2283:0500	2026-08-25	2027-06-30	listed

Tests and programs cited

ASTM E108 / UL 790 · test-method
ASTM E84 · test-method
OSFM BML · listing-program

Models named on the listing

Model	Application
SOL-R-SKIN Class A Thermal Underlayment	4.5-foot by 100-foot, 45-pound roll for assembly-specific roof applications

Specification notes

Class A is assembly-specific, not an inherent rating for every roof placed over SOL-R-SKIN. Match the exact BML listing, deck, seam tape, underlayment attachment, roof covering, battens, fasteners, and slope.
In manufacturer-hosted Intertek report 103495318MID-001, the standing-seam metal assembly had flaming beneath the deck and no acceptance level, while the tested CF stone-coated shingle and Antica Pisa stone-coated tile assemblies met Class A criteria. Do not generalize the passing assemblies to every metal, shingle, or tile roof.
ASTM E84 Class A/Class 1 surface-burning language is not an ASTM E108 Class A roof assembly.

Sources

OSFM Building Materials Listing (live database) — CAL FIRE OSFM (listing-body). Accessed 2026-08-25.
SOL-R-SKIN thermal roof underlayment — International Insulation Products, LLC (manufacturer). Accessed 2026-08-25.
Intertek report 103495318MID-001 — SOL-R-SKIN ASTM E108 roof assemblies — Intertek Testing Services NA, Inc. (official). Accessed 2026-08-25.
Intertek listing 45136 — SOL-R-SKIN roof underlayments — Intertek (listing-body). Accessed 2026-08-25.

SOL-R-SKIN Class A thermal roof underlayment assemblies. FireApproved. https://fireapproved.com/materials/international-insulation-products-sol-r-skin-roofing-insulation/. Last verified 2026-08-25.