Access Doors and Panels always make sure to provide the quality products you need for any construction projects. This is why we are proud to introduce to you our industry-leading product, the L 50TB Thermally Broken - Service Stair Access Roof Hatch,

Thermally broken roof hatches feature R-20+ insulation and a frame and cover design that minimizes heat transfer between the 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;

  • 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 cap flashing, 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 the 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.

We offer all standard sizes for your commercial, industrial, and residential project needs. Feel free to call us anytime at 1-800-609-2917 if you need Access Doors and Panels to supply the quality products you need for your construction needs.