FF102/50

Rainscreen Fireblock

intumescent fireblocking for up to 2″ cavities in ventilated rainscreen systems

Three flat, rectangular metal bars with fire barrier and product labels in red and white on a white background.

Key Benefits:

Cross-section of a building wall showing flames behind cladding, featuring a fire barrier that illustrates essential fire protection measures.
Black ETL Listed certification logo in a circle, indicating safety compliance and fire barrier protection for electrical products.
Close-up of a modern wall featuring metal mesh, white panels, and a horizontal sliding fire barrier mechanism.
Black UL Listed certification logo with the letters UL inside a circle above the word LISTED in bold, indicating approval for products such as fire barrier systems.

Product Details

The FF102/50 Fire Blocks are rigid, high expansion intumescent strips encased in aluminum foil. The FF102/50 can be mechanically fixed both horizontally and vertically within concealed cavities and air gaps of up to 2″ (up to 1 3/4″ open space between the face of the fireblock and the cladding). For larger cavities please refer to our FF102/50Plus products.

The FF102/50 enables high-performance rainscreen walls while simultaneously delivering exceptional fireblocking. The open space between the FF102/50 and cladding allows for airflow and moisture dissipation while in a fire, the intumescent material rapidly expands to seal off the cavity and prevent the spread of flames and heat.

The products have undergone extensive fire testing, including NFPA285 at Intertek and Underwriter Laboratories (UL), and are a NYC OTCR/DOB approved material in accordance with the 2022 NYC Building Code Section 718.2.1 (item #8) when required in concealed spaces of exterior wall coverings as specified in accordance with BC 718.2.6.1.

In addition, the intumescent material was tested according to ASTM E84 (UL 723) to measure its surface burning characteristics and achieved a flame spread index of 0 (zero) and a smoke developed value of 0 (zero).

FF102/50 intumescent strips are used as fireblocking at slab lines, fire blocks around windows and as fire blocks at changes in occupancy (horizontally and/or vertically).

Length: 39 3/8″ * (1000mm)

Width: 3″ * (75mm)

Thickness: 1/4″ * (7mm)

*Nominal

Diagram showing mineral wool fireblock applications around a window, with labeled cross-sections on the right to illustrate its function as a reliable fire barrier.

Quote Request | Enquiry

Need help? Call us now on 1-800-821-3436

Line drawing of a compass tool used for drawing circles, with part of a curved line beneath it—an ideal symbol for precision in Passive Fire Protection planning and design.

Architects & Specifiers

Line drawing of a house on a rolled architectural blueprint, emphasizing Passive Fire Protection in the construction plan.

Inspectors & Code Enforcement

Simple black outline of a house with a door and a slanted roof, symbolizing safety and Passive Fire Protection in home design.

Builders, Contractors & Developers

Black outline icon of a delivery truck facing right on a transparent background, ideal for businesses specializing in Passive Fire Protection services or deliveries.

Distributors