1160/61 Metal Fire-Rated Drop Down Hinged Loft Access Door

Easy-to-install hinged drop-down loft access door designed to provide easy through-ceiling access into the loft space, for use where fire protection is required. Fire-rated loft doors come fully assembled and ready to fit straight out of the box.

Provides up to 60 minutes fire protection and Class O surface spread of flame classification. Tested and certified by BRE as meeting Building Regulation Part L’s reasonable air leakage requirements of <10m3/(h.m2) at a pressure differential of 50Pa.

Insulation U-value performances of 0.82 W/m2K and 0.35 W/m2K available.

Two size options available:
1160 – 542 x 745mm (frame fitting size)
1161 – 542 x 630mm (frame fitting size)

Twist operated catch to release a downward opening hinged door.

Clean, discreet profile with an easy to clean finish. Manufactured from 1mm and 1.2mm Zintec electro-galvanised mild steel.

Loft door operating pole also available.

Uses:

    To provide access through the ceiling into the ceiling void in situations where fire protection is required

Product Information

1 Hour Fire Rated Hinged Loft Access Door

DescriptionFrame fitting sizeClear opening sizeInsulation U-valueProduct Code
1 hour fire rated hinged loft door542 x 745mm520 x 695mm0.82 W/m2k1160
1 hour fire rated hinged loft door with key lock542 x 745mm520 x 695mm0.82 W/m2k1160KL
1 hour fire rated hinged loft door542 x 745mm520 x 695mm0.35 W/m2k1160/35
1 hour fire rated hinged loft door with key lock542 x 745mm520 x 695mm0.35 W/m2k1160/35KL
1 hour fire rated hinged loft door542 x 630mm520 x 580mm0.82 W/m2k1161
1 hour fire rated hinged loft door with key lock542 x 630mm520 x 580mm0.82 W/m2k1161KL
1 hour fire rated hinged loft door542 x 630mm520 x 580mm0.35 W/m2k1161/35
1 hour fire rated hinged loft door with key lock542 x 630mm520 x 580mm0.35 W/m2k1161/35KL
Loft door operating pole (0.5m)1162

  • Fully complies with NHBC standards for having a minimum access opening of 520mm
  • Purpose made product with proven performance
  • Superior to site fabricated panels
  • Provides up to 60 minutes fire protection and Class O surface spread of flame classification
  • Excellent aesthetic appearance and factory finished
  • Maintenance free, no need to paint
  • Allows the use of a telescopic ladder if required
  • Incorporates secure twist operated catch assembly
  • U value 0.82 W/m2k and 0.35W/m2k option
  • Acoustic performance of 29dB
  • Fire testing conducted by Warrington Fire Research Ltd
  • 0.35U value option meets Robust Details
  • Complies with Building Regulations document L1A & L2A (2013 Edition)
  • Meets all relevant British Standards and NHBC requirements
  • The frame and door are fabricated in 1mm and 1.2mm Zintec electrogalvanised mild steel. The door is lined with a fire-resistant sub-panel to enhance fire resistance and stability. Polyester powder coating, lightly textured.
  • Door and frame available in white only RAL 9016. Loft door pole operating pole manufactured from black reinforced plastic.
  • The 1160 and 1161 are designed to fit between trussed rafters or ceiling joints spaced at 600mm centres which provide a clear joist opening width of 562mm to be plasterboard lined to give 542mm.
  • If the joist spacing does not provide this opening width, a suitable trimmed opening must be formed.
  • It is essential that trimmers are installed between the ceiling joists across the ends of the frame.
  • The frame fixes with 10 screws, six into the ceiling joists at the sides of the frame, and four through the ends of the frame into the trimmers.
  • A 50mm tall by 10mm thick protective plasterboard surround is required along all four sides of the trimmed opening.

L20 Doors/Shutters/Hatches

Clause 630^ | HATCHES

  • Manufacturer: Timloc Building Products, Timloc House, Ozone Park, Howden, East Yorkshire, DN14 7SD. Tel: 01405 765567 Web: www.timloc. co.uk
  • Product reference: 1160 or 1161
  • Type: loft access door (Hinged)
  • 1160 to suit fitting 542mm x 745mm
  • + 1161 to suit fitting 542mm x 630mm
  • Specification: insulated and draught stripped
  • Colour: textured white polyester powder coating

Timloc loft access doors contain glass wool insulation with a Thermal Conductivity of 0.037W/mK. For this reason, a correction U value of 0.004W/m2k should be calculated to the proposed U value figures for a ceiling (U value for a ceiling, not to exceed 0.16W/m2k).

With reference to insulation, the products in this range do not use, contain or produce CFC’s, ie. HCFC’s & HFA’s. The mineral wool insulation relies on entrapped air for its thermal properties; air is not a VOC and it does not have Global Warming Potential (GWP) or Ozone Depletion Potential (ODP).

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