Base Mounting Options
System overviews
Choose from freestanding, weighted, and mechanically attached base options to suit different roof types, slopes, wind loads, and project requirements.
Note: Mounting suitability depends on the application, supporting structure, and project requirements.
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KBMK.180 — Nonpenetrating Support Rail Base
Extrusion Bases provide a cost-effective, freestanding, non-penetrating base system for most access systems in low-slope, low-wind-load applications.
Ideal for ramps and taller crossovers, they offer greater tip resistance and distribute the load over a larger roof area than weighted bases. Standing seam roof applications are also available and require clamps.
Each kit includes one 5ft support extrusion and the required connection hardware.
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KBMK.1WB — Nonpenetrating Weighted Base
Weighted Bases provide a freestanding, non-penetrating base system for most access systems under 4ft tall on flat roofs in low-wind-load applications.
Ideal for small platforms and short crossovers, they are not recommended for crossovers or platforms over 4ft tall.
Each kit includes two plastic-coated steel bases, each weighing 21lbs and measuring 12" × 12" × 5/8". Each base bolts directly to the KB026 foot.
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KBMK.KP.XX — Mechanically Attached Base
Anchor Plates secure Modular Access Systems directly to the roof substrate on membrane roof systems.
Ideal for systems taller than 5ft, they are generally required for rooftop systems over 10ft tall. Applications include roof-to-roof stairs, ladder bases, ship’s ladder bases, and walkways.
Each kit includes two roof deck attachment anchors with roof-specific membrane flashing.
View systems
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Available Configurations
KBMK.180 — Nonpenetrating Support Rail Base
Extrusion Bases provide a cost-effective, freestanding, non-penetrating base system for most access systems in low-slope, low-wind-load applications. Ideal for ramps and taller crossovers, they offer greater tip resistance and distribute the load over a larger roof area than weighted bases. Standing seam roof applications are also available and require clamps.
Each kit includes one 5ft support extrusion and the required connection hardware.
KBMK.1WB — Nonpenetrating Weighted Base
Weighted Bases provide a freestanding, non-penetrating base system for most access systems under 4ft tall on flat roofs in low-wind-load applications. Ideal for small platforms and short crossovers, they are not recommended for crossovers or platforms over 4ft tall.
Each kit includes two plastic-coated steel bases, each weighing 21lbs and measuring 12" × 12" × 5/8". Each base bolts directly to the KB026 foot.
KBMK.KP.XX — Mechanically Attached Base
Anchor Plates secure Modular Access Systems directly to the roof substrate on membrane roof systems. Ideal for systems taller than 5ft, they are generally required for rooftop systems over 10ft tall. Applications include roof-to-roof stairs, ladder bases, ship’s ladder bases, and walkways.
Each kit includes two roof deck attachment anchors with roof-specific membrane flashing.
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