- VersaMount Retrofit Design installs over existing curb without removing roofing membrane
- Extra-Long 30" x 96" Opening ideal for ladder, ship stair, and equipment roof access
- Aluminum Cover & Curb with corrosion-resistant construction and insulated performance
- Weather-Tight Construction featuring welded corners, overlapping cover, EPDM gasket, and built-in apron
- Safe, Assisted Operation with compression spring lift assist and automatic hold-open arm
Price: $4,215.00
Item #BILCO-L-50VM
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Description
The Bilco L-50VM is a 30-inch by 96-inch VersaMount Type L roof hatch designed for retrofit replacement over existing curbs without removing roofing membrane. It comes with a low-profile curb featuring built-in flange and apron, and uses anchor clips for secure, weather-tight attachment. The aluminum cover and curb include insulation, EPDM gasket, overlapping cover design, and welded corners, along with compression spring lift assistance, hold-open arm, and durable latch hardware.
Key Features:
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Retrofit design allowing replacement over existing curb without re-roofing
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Built-in flange and apron with anchor clip system for secure and weather-tight installation
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Aluminum cover and curb with insulation, EPDM gasketing, overlapping cover, and welded corners
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Lift assistance via compression springs and automatic hold-open arm for safer operation
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Corrosion resistant hardware and positive latch mechanisms for security
Specifications
- Width × Length: 30″ × 96″
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Material: 11 gauge (2.3 mm) aluminum for cover and frame, aluminum curb
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Curb height: 4″ (102 mm); mounting flange approx. 2-5/8″ (67 mm); apron approx. 1-1/2″ (38 mm)
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Insulation: 1″ (25 mm) concealed fiberglass insulation in cover and curb
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Includes: Roof hatch with cover, insulated curb, built-in flange and apron, anchor clips, hardware, hold-open arm, latch set
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Live load capacity: 40 psf (195 kg/m²)
How To
- Remove the cover from the damaged existing roof hatch and prepare the existing curb.
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Position the L-50VM hatch over the existing curb, ensuring flange and apron align and overlap correctly.
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Secure the hatch using anchor clips through existing curb; fasten mounting flange as needed.
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Test the cover’s opening and closing, verify gasket seal and latch function, check hold-open arm operation.
FAQs
Q: Can the L-50VM be installed without removing the old hatch or roofing membrane?
A: Yes. It is designed as a replacement hatch that mounts over the existing curb using built-in flange and anchor clips.
Q: What are the insulation specifications?
A: It includes 1″ concealed fiberglass insulation in both cover and curb.
Q: What materials are used in L-50VM?
A: Aluminum cover and frame (11 gauge / 2.3 mm), aluminum curb and aluminum hardware, with corrosion resistant finishes.
Q: How does L-50VM ensure weather-tightness?
A: With overlapping cover design, welded corners, built-in apron, EPDM gasket, and anchor clip system to secure over existing curb.
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