3-1/2 in x 24 in x 48 in, Unfaced, Mineral Wool Batt Insulation, 64 sq-ft

ROCKWOOL AFB® is a lightweight, stone wool acoustical fire batt insulation specifically designed for steel stud and wood stud interior wall and floor applications. AFB combines the benefits of fire resistance, sound absorption and durability together into a unique insulation product that will add value to your assemblies. See why AFB is the best mix of fire resistance, sound absorption, and durability an insulation has to offer.

ROCKWOOL Acoustical Fire Batt Insulation, 3-1/2 in Thickness, 24 in Width, 48 in Length, Unfaced Facing, Ceiling, Floor, Wall Installation, Natural Stone, Resists: Corrosion, Fire, >2.5 lb/cu-ft Density

• ROCKWOOL AFB demonstrated a higher compression force and pull out resistance when compared to fiberglass products in the same wall cavity. This creates a tighter fit between studs for a complete fill of the cavity, improving the performance of the wall assembly
• AFB provides the optimal balance of rigidity and flexibility when installing between studs, helping to make installations fast and efficient on the jobsite
• DIY/Small contractors agreed that ROCKWOOL batts fit better and the installation looked aesthetically superior in the wall cavity when compared to fiberglass batts due to minimal voids in the cavity, giving them greater confidence in the performance of the assembly, and that the installation would pass the first inspection
• When comparing similar wall assemblies using stone wool and fiberglass light density insulation products, the stone wool assembly resulted in STC values similar or slightly above the fiberglass wall assembly
• At very low frequencies below 80Hz, transmission loss values are shown to be up to 1dB higher, and with frequencies above 800Hz the differences can be up to 3dB higher, contributing to an overall higher performance in the expanded spectrum of sound that may be experienced in a building
• Stone wool insulation performs better at high frequencies due to its mass and airflow resistivity when compared with fiberglass insulation
• ROCKWOOLTM has available acoustic modelling support through our Building Science team to recommend the optimal solution for your project
• AFB is a spec friendly product, being included in a wider range of UL fire listings when compared to fiberglass products, with greater than 50% visibility in UL fire listings
• For a complete list of AFB fire-rated assemblies, search on UL's Product iQ database with Product Category "BZJZ". AFB is valid for any assembly where a BZJZ component is required.
• AFB is non-combustible and has the lowest possible flame spread/smoke developed index of 0/0 per ASTM E84. Fiberglass products are classified as <25/<50 only. Actual FSI/SDI values are not reported.
• ROCKWOOL AFB and AFB evo have certified listings for USDA BioPreferred and UL GreenGuard Gold certification
• AFB has achieved a Red List Approved Declare Label, and ROCKWOOL AFB evo has achieved a Red List Free Declaration, and has also achieved the UL Environment's Formaldehyde Free Environmental Claim validation

• Catalog https://assets.unilogcorp.com/267/ITEM/DOC/ROCKWOOL_168648_Catalog.pdf
• Specification Sheet https://assets.unilogcorp.com/267/ITEM/DOC/ROCKWOOL_168648_Specification_Sheet.pdf
• Submittal https://assets.unilogcorp.com/267/ITEM/DOC/ROCKWOOL_168648_Submittal.pdf
• Technical Bulletin https://assets.unilogcorp.com/267/ITEM/DOC/ROCKWOOL_168648_Technical_Bulletin.pdf
• Video Link https://youtu.be/r44jbAi4ilY
• Catalog https://25500sep.stage.cimm2.com//ASSETS/DOCUMENTS/ITEMS/EN/MWBDAF2014X_CAT.pdf
• Specification Sheet https://25500sep.stage.cimm2.com//ASSETS/DOCUMENTS/ITEMS/EN/MWBDAF2014X_SS.pdf