Thermally Broken Roof Hatch

Models: Type S-50TB, E-50TB, NB-50TB, L-50TB, F-50TB, GS-50TB*

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: Type 316 stainless steel hinges. All other hardware is zinc plated/chromate sealed.

* Note: Type GS-50TB models feature a thermally broken curb with R-20+ insulation and a polycarbonate dome cover that does not meet this thermal performance.

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CA Prop 65 Notice

WARNING : The State of California has deemed that this product can cause cancer, birth defects or other harmful effects. For more information, please visit For more information, Please visit: www.p65warnings.ca.gov/