Bilco E-20 - Galvanized Steel Roof Hatch, 36" x 36"

The Bilco E-20 is a 36-inch by 36-inch Type E roof hatch designed primarily for ladder access. It features either galvanized steel or aluminum cover and frame, with 1″ insulation in cover and curb, EPDM gasket, and a hold-open arm that locks the cover in the open position. Operation is aided by compression spring operators, and the hatch includes overlapping flange design, fully welded corners, and the Bil-Clip flashing system for secure installation of roofing material.

Key Features:

• Ladder access design with heavy gauge cover/frame and one-hand operation via compression spring operators
  
• 1″ insulation in both cover and curb to maintain thermal performance and comfort
  
• Overlapping beaded flange, welded cover and curb corners, and EPDM gasket for weather tightness
  
• Automatic hold-open arm and positive latch with interior/exterior handles and padlock hasps
  
• Multiple material options: galvanized steel, aluminum, or stainless steel, with corrosion-resistant hardware

• Size: 36″ × 36″ (914 mm × 914 mm)
• Material: 14 gauge galvannealed steel or 11 gauge aluminum (also stainless steel option)
• Cover: Brake-formed, hollow-metal design with overlapping flange, 3″ beaded flange, fully welded corners, 1″ insulated via fiberglass; reinforced for 40 psf live load
• Curb: 12″ (305 mm) height; integral cap flashing; 1″ fiberboard insulation; fully welded corners; 3½″ (89 mm) mounting flange with 7⁄16″ (11 mm) holes for securing to roof deck
• Gasket: Extruded EPDM rubber gasket permanently adhered to cover
• Hinges: Heavy-duty pintle hinges with 3⁄8″ (9 mm) type-316 stainless steel hinge pins
• Latch: Slam latch with interior & exterior handles; padlock hasps
• Finish: Steel with red-oxide primer (alkyd base), aluminum mill finish, or stainless steel; hardware zinc plated/chromate sealed or stainless depending on material chosen
• Includes: Cover & curb, insulation, gasket, hinges, latch & handles, hold-open arm, flashing system

• Prepare roof opening sized 36″×36″ with proper structural support and curb installed.
• Position the E-20 hatch over the curb, align flange mounting holes.
• Secure the frame to roof deck through the mounting flange holes.
• Install hinges, compression spring operators, hold-open arm, latch & handles.
• Test opening and closing; verify gasket seal; ensure latch engages properly.

Q: What live load capacity does the E-20 support?
A: It is rated for 40 psf live load over cover.

Q: Can I choose between steel, aluminum, or stainless steel for E-20?
A: Yes. E-20 is available in galvanized steel, aluminum, or stainless steel material options.

Q: Does E-20 include insulation in both cover and curb?
A: Yes. There is 1″ insulation in the cover and matching insulation in the curb.

Q: What features contribute to weather tightness in the E-20?
A: Overlapping flange design, welded corners, EPDM gasket, and fully insulated cover & curb are key.