Product Details

36" x 36" - Thermally Broken Aluminum Roof Hatch

Thermally broken roof hatches feature R-20+ insulation and a frame and cover design that minimizes heat transfer between interior and exterior metal surfaces. The result is a product that resists harmful condensation and provides superior energy efficiency. The Thermally Broken design is available in all standard BILCO single leaf sizes (S,E,NB,L,GS,F) and special single leaf sizes are available upon request. 

Product Specifications Download Cut Sheet 

Standard Features and Benefits

  • Thermally broken cover and curb reduces heat transfer between interior and exterior surfaces to resist harmful condensation
  • Ozone-friendly polyisocyanurate insulation (R-20+) provides superior energy efficiency
  • Special EPDM gasketing with enhanced weather and wind resistance
  • Meets LEED® standards for recycled content
  • High solar reflective index (SRI)
  • Available in all Bilco standard roof hatch sizes and special sizes are available upon request 


Guide Specifications

  • Material: Cover and frame are 11 gauge (2.3 mm) aluminum.
  • Cover: Brakeformed, hollow-metal design with 3" (75 mm) concealed polyisocyanurate insulation (R Value of 20+), 5" (100 mm) beaded, overlapping flange, fully welded at corners, and internally reinforced for 40 psf (195kg/m2) live load. (See note below for Type GS-50-TB models)
  • Curb: 12" (305 mm) in height with integral capflashing, 3" (75 mm) polyisocyanurate insulation (R Value of 20+), fully welded at corners, and 5-1/2" (114 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: Mill finish aluminum
  • Hardware: Engineered composite compression spring tubes and steel compression springs packed in grease. Type 316 stainless steel hinges. All other hardware is zinc plated/chromate sealed.
Door Size:
36" wide x 36" high
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Bilco 36 x 36 - Thermally Broken Aluminum Roof Hatch
SKU # E50TB-36-36

36" x 36" - Thermally Broken Aluminum Roof Hatch