- Retrofit VersaMount Design installs over existing curb without re-roofing
- Galvanized Steel Cover & Frame with 1″ concealed fiberglass insulation
- Weather-Tight Construction with overlapping flange, welded corners, and EPDM gasket
- Spring-Assisted Lift with automatic hold-open arm for safe access
- Positive Slam Latch with interior/exterior handles and padlock provisions
Price: $990.00
Item #BILCO-S-20VM
Write a review!
Description
The Bilco S-20VM is a roof hatch designed for replacement over an existing curb without requiring re-roofing. Sized at 36″×30″ for ladder access, it includes a low-profile curb with a built-in apron and anchor clip system for secure installation. It offers a galvanized steel cover and frame with 1″ insulation, overlapping flange, welded corners, EPDM gasket, compression springs, a slam latch with handles both inside and outside, and an automatic hold-open arm for safety.
Key Features:
-
Replacement hatch that mounts over existing curbs with built-in apron and anchor clips for watertight fit
-
Galvanized steel construction with insulated cover and hollow-metal design for durability and thermal performance
-
Cover and curb with overlapping flange, welded corners, and EPDM gasket for weather resistance
-
Lift assistance via compression spring operators and automatic hold-open arm for safety during access
-
Positive latch mechanism with interior/exterior handles and padlock provisions
Specifications
- Size (curb-to-curb): 36″ × 30″
-
Material: 14 gauge (2.0 mm) galvanized steel cover and frame
-
Cover: 1″ concealed fiberglass insulation; overlapping flange; hollow-metal, welded corners; beaded design; live load capacity 40 psf
-
Curb: 4″ height; built-in apron 1-1/2″; mounting flange approx. 2-5/8″; welded corners and insulated curb
-
Gasket: Extruded EPDM rubber, adhered permanently to the cover
-
Includes: Roof hatch with cover & curb, anchor clips, hardware, latch and handle set, spring lift operators, hold-open arm
How To
- Remove the damaged hatch cover and prepare the existing curb surface.
-
Set the S-20VM over the curb, ensuring built-in apron overlaps curb edges and anchor clips align.
-
Secure anchor clips to existing curb, then fasten mounting flange.
-
Install compression springs, latch hardware, and hold-open arm.
-
Test open/close operation, check gasket seal, and latch engagement.
FAQs
Q: Can S-20VM be installed without replacing the curb?
A: Yes. The S-20VM is engineered to mount over existing curbs using its VersaMount curb, built-in flange, apron, and anchor clip system.
Q: What insulation is used in S-20VM?
A: It uses 1″ concealed fiberglass insulation in the cover and matching insulation in the curb.
Q: What live load rating does the hatch have?
A: It is rated for 40 psf live load performance.
Q: Is the S-20VM hatch designed to accept a safety railing?
A: No. The VersaMount models are not designed to accept standard railing systems.
Reviews (0) • Write a review!
This product has no reviews yet. Write a review!
Bilco F-50 - Aluminum Roof Hatch, 48" x 48"
Easy one-hand operation to the fully open or close position provides the ladder user the security of having one hand firmly on the ladder at all times
Price: $3,225.00
Availability: In Stock
Usually ships within 1-2 Business Days
The Bilco F-50 roof hatch is a 48 inch by 48 inch ladder-access hatch built for durability and smooth, one-hand operation. Its insulated cover and curb, overlapping design, and EPDM gasket help ensure weather tightness. Heavy-duty hardware, compression springs, and a hold-open arm support safe access and long service life. Key Features: 48x48 opening for ladder access and maneuvering small tools or materials Insulated cover and curb with EPDM gasket for weather tightness Compression spring...
Bilco S-50 - Aluminum Roof Hatch, 36" x 30"
Ladder Access
Price: $1,200.00
Availability: In Stock
Usually ships within 1-2 Business Days
The Bilco S-50 is a 36-inch by 30-inch Type S roof hatch designed for fixed interior ladder access. It features an overlapping, brake-formed hollow-metal cover with 1″ concealed fiberglass insulation and fully insulated curb. It includes EPDM gasket, corrosion-resistant hardware, compression spring lift assistors, and an automatic hold-open arm. Cover and frame are available in aluminum (11 gauge) or galvanized steel (14 gauge), giving durability and weather tightness. Key Features:...
Bilco S-20 - Galvanized Steel Roof Hatch, 36" x 30"
Ladder Access
Price: $955.00
Availability: In Stock
Usually ships within 1-2 Business Days
The Bilco S-20 is a 36-inch by 30-inch Type S roof hatch designed for ladder access. Its insulated cover and curb, fully gasketed design, overlapping cover with counterbalanced lift make for easy one-hand operation. The hatch is constructed in either galvanized steel or aluminum, with compression spring operators, a slam latch with interior and exterior handles, padlock hasps, and Bil-Clip flashing at the curb to integrate with roofing. Key Features: Counterbalanced cover with automatic...
Bilco RPRS7 Replacement Door Latch - Zinc Plated
Non-stainless steel Replacement door latch for roof hatches
Price: $164.95
Availability: In Stock
Usually ships within 1-2 Business Days
The Bilco RPRS7 Replacement Door Latch is a zinc plated latch assembly intended for roof hatches with a 1″ cover. It includes required zinc plated bolts and self-tappers, and a 4-5/8″ shaft for proper handle reach. The latch is chrome sealed for enhanced corrosion resistance and designed to retrofit without replacing the cover. Key Features: Zinc plated steel construction with chromate seal for corrosion protection Shaft length of 4-5/8″ to match 1″ cover roof hatch lids Comes with self-tapper...