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Type S Roof Hatch - Ladder AccessZoom In

Type S Roof Hatch - Ladder Access

Type S roof hatches, 36" x 30" (914mm x 762mm), provide convenient, reliable access to roof areas by means of a fixed interior ladder. Product features a counter-balanced cover design for easy one-hand operation and fully gasketed and insulated construction for weather resistance. Available in galvanized steel or aluminum construction.


Roof Hatch Models: S-20, S-40, S-50, S-90 (stainless steel)  
Miami-Dade County
Florida Building Commission

Now Available in
Thermally Broken

Click here for more information
Standard Features and Benefits 
  • Miami-Dade County and Florida Building Commission approval for use in high velocity hurricane zones with large and small missile impact.*
  • Engineered with compression spring operators to provide smooth, easy, one-hand operation, regardless of size
  • Automatic hold-open arm locks the cover in the open
    position to ensure safe egress
  • Overlapping cover design, full welded corners on cover and curb, EPDM rubber gasket, and fully insulated cover and curb ensure weathertightness and energy efficiency
  • Constructed with corrosion resistant materials to provide many years of trouble free, dependable service
  • Heavy gauge construction and positive latching mechanism maintain building security
  • Curb features the Bil-Clip flashing system, an innovative method to quickly and easily secure single-ply roofing material to Bilco roof products
  • Available in many sizes and curb configurations to satisfy any requirement or installation
*Standard Type S-20 and S-50 models are approved

Ladder sold
by others
  Guide Specifications
  • Material (select one):
    Steel: Cover and frame are 14 gauge (2 mm) G-90 paint bond galvanized steel.
    Aluminum: Cover and frame are 11 gauge (2.3 mm) aluminum.
    Stainless Steel: Cover and frame are 14 gauge (2 mm) type 304 stainless steel
  • Cover: Brakeformed, hollow-metal design with 1" (25 mm) concealed fiberglass insulation, 3" (76 mm) beaded, overlapping flange, fully welded at corners, and internally reinforced for 40 psf (195 kg/m2) live load.
  • Curb: 12" (305 mm) in height with integral capflashing, 1" (25 mm) fiberboard insulation, fully welded at corners, and 3-1/2" (89 mm) mounting flange with 7/16" holes (11 mm) provided for securing frame to the 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 and exterior turn handles and padlock hasps.
  • Lift Assistance: Compression spring operators enclosed in telescopic tubes. Automatic hold-open arm with grip handle release.
  • Finish:
    Steel: Alkyd base red oxide primer.
    Aluminum: Mill Finish.
    Stainless Steel: Type 304 stainless steel with bead blast finish
  • Hardware:
    Steel: Engineered composite compression spring tubes with steel compression springs packed in grease. All other hardware is zinc plated/chromate sealed.
    Aluminum: Engineered composite compression spring tubes with steel compression springs packed in grease. Type 316 Stainless steel hinges. All other hardware is zinc plated/chromate sealed.
    Stainless Steel: Type 316 stainless steel.
U.S. Patents  5,960,596  6,347,818