Direct Answer Fire separation requirements at roof-to-wall conditions depend on what type of wall is involved, the building’s construction type and occupancy, the required fire-resistance rating, fire separation distance, and…
Direct Answer The most common cover board options on Florida commercial roofs are high-density polyiso, glass-mat gypsum, gypsum-fiber, cementitious boards, and perlite-based boards. The right choice depends on the roof…
- August 14, 2026
What insulation is required beneath a fully adhered membrane?
Direct Answer There is no single insulation type that is universally required beneath a fully adhered commercial roof membrane. The required insulation depends on the roof assembly, building location and…
Direct Answer Yes. Florida has fire-safety requirements that can apply to rooftop solar photovoltaic (PV) systems on commercial buildings. These requirements are not limited to the solar panels themselves. A…
- August 14, 2026
What ladder and roof access safety requirements apply?
Direct Answer Ladder and roof access safety requirements for commercial buildings generally involve safe ladder construction and maintenance, controlled access to the roof, appropriate fall protection, safe roof openings and…
- August 14, 2026
How do I find my roof assembly listed in the FM Approval Guide?
Direct Answer To find a commercial roof assembly in the FM Approval Guide, use FM Approvals’ RoofNav rather than the general Approval Guide. FM states that FM Approved products and…
- August 14, 2026
What is a cover board and does it improve wind performance?
Direct Answer A cover board is a rigid board installed above the roof insulation and directly below the roofing membrane in many commercial low-slope roof assemblies. Its primary purposes can…
- August 14, 2026
What are hot work permit requirements for roofing operations?
Direct Answer Hot work permit requirements for roofing operations are designed to prevent fires when roofing work involves an open flame, welding, cutting, brazing, grinding, or another spark- or heat-producing…
Direct Answer The rules for material hoisting near overhead power lines require contractors to plan the lifting operation around the location of the lines, determine the required clearance, and prevent…
Direct Answer When cranes, hoists, or other lifting equipment are used for a commercial roofing project, the work must be planned around the safe movement of roofing materials, equipment, and…