Description

This data sheet sets out suggestions on how selected plastic building materials can be used and protected from fire.

Scope

This data sheet provides recommendations for the use and fire protection of selected plastic building materials. Materials included are:

• • fiberglass reinforced plastic (FRP).
• • polyvinyl chloride (PVC) plastic.
• • polymethyl methacrylate (PMMA) and polycarbonate (PC) plastics.
• • polyurethane (PU) and polyisocyanurate (PIR) insulated panels.
• • expanded and extruded polystyrene (EPS) insulated panels.
• • spray-applied insulations including polyurethane (PU) foam, cellulose, and icynene.
• • plastic structural members.

Some of the applications specifically covered in this standard include wall and ceiling panels, sandwich panels
used for roof construction, spray-applied polyurethane, guidance on outdoor storage tanks, and elastomeric
insulation.

Heated plastic tanks, ductwork, piping, and exterior exposure protection of plastic panels are not covered
in this data sheet.

References to polyurethane also apply to polyisocyanurate, unless specifically noted otherwise. References
to EPS apply to both expanded and extruded polystyrene. For recommendations on plastic ductwork, see
Data Sheet 7-78, Industrial Exhaust Systems. For recommendations on wind resistance for exterior wall and
roof panels, see Data Sheet 1-28, Wind Design. For recommendations on cavity wall construction, see Data
Sheet 1-12, Ceiling and Concealed Spaces. For recommendations on exterior fire exposure, see Data Sheet
1-20, Protection Against Exterior Fire Exposure.

For FM Approved products, refer to any limitations highlighted within the Approval Guide, a publication of
FM Approvals. A listing of FM 4910 materials can be found in the Approval Guide.