- Provides safer ladder and service stair roof access with a stable handhold
- Lightweight aluminum construction resists corrosion in rooftop environments
- Helps maintain three points of contact when entering or exiting the roof hatch
- Designed for frequent commercial and industrial rooftop access
- Durable, low-maintenance solution compatible with Bilco roof hatches
Price: $653.00
Item #BILCO-LU-4
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Description
The Bilco LU-4 Roof Hatch is engineered to provide safe and convenient service stair access through a 30 inch by 78 inch opening. Its design supports frequent use in commercial and industrial applications where personnel and equipment require rooftop access. The LU-4 includes an insulated cover and curb, welded construction, and an EPDM gasket for reliable weather tightness. Heavy-duty compression springs provide lift assistance, while a hold-open arm secures the cover in place during use.
Key Features:
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30x78 opening for service stair access
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Insulated cover and curb with approximately R-6 rating
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Heavy-duty galvanized steel, aluminum, or stainless steel construction
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Welded corners and EPDM gasket for long-term weather resistance
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Compression spring hardware for one-hand operation
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Automatic hold-open arm for secure rooftop access
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Slam latch with inside and outside handles, padlock provision
Specifications
- Opening size: 30 inches x 78 inches
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Curb height: 12 inches
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Insulation: 1 inch polyisocyanurate in cover and curb (approx. R-6)
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Materials: galvanized steel (14-gauge), aluminum (11-gauge), stainless steel (14-gauge)
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Hardware: stainless steel hinge pins, compression springs, slam latch, hold-open arm
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Finish: mill finish aluminum, hot-dip galvanized steel, or optional powder coat
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Live load rating: 40 psf with 50 psf wind uplift
How To
- Prepare a roof opening of 30 inches by 78 inches with structural curb support.
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Position the LU-4 hatch over the curb, aligning the flange holes.
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Secure the hatch through the flange using appropriate roofing fasteners.
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Install hinges, compression springs, slam latch, and hold-open arm.
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Test the hatch for smooth opening, latch engagement, and weather tightness.
FAQs
Q: What is the LU-4 designed for?
A: The LU-4 is designed for service stair access, providing a larger opening than ladder hatches.
Q: Is the LU-4 insulated?
A: Yes, it includes 1 inch polyisocyanurate insulation in both the cover and curb.
Q: What is the live load rating of the LU-4?
A: It is rated for 40 psf live load with 50 psf wind uplift.
Q: Can the LU-4 be padlocked?
A: Yes, the slam latch includes provisions for a padlock.
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