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Airtight insulated Loft Hatch Range

Verified by manufacturer 5 months ago

AT15

Access Building Products Ltd Variant:

Loft hatch, air tight and insulated offering the best performance of any loft hatch on the market. Fabricated from steel with a powder-coated finish this range looks smart and is build to last.

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Application

For residential applications. Suitable for ceiling use.

Description

Designed to meet or exceed Part L of the building regulations, the AT loft hatch range is offered with three insulation options, giving U-values of 0.35, 0.25 and 0.15. It excels in both positive and negative air pressures at 50 Pa, exceeding requirements for new properties' airtightness and insulation. The air permeability test follows BS EN 1026:2000 and BS EN 12207:2000 standards, specifically for ceiling use.


The hatch features a spring-loaded twist catch lock that ensures a high compression seal between the door and frame. Additionally, the outer frame is equipped with a seal to prevent air from escaping around the hatch's outer edge.


Insulation:

The AT35 features 65 mm foam insulation bonded to the inside of the lid, while the AT25 and AT15 offer 100 mm insulation.


Lock options:

Choose the standard twist lock with a tri-drive lock body, which comes with an opening key. For added security, an optional key lock is available (key included). Please note that the pole is not compatible with the key lock option.


Easy installation:

Screw fix through the pre-drilled holes in the frame into the surrounding joists.


Features and benefits:

  • Airtight at 600 Pa air pressure (positive and negative).
  • Easy installation with hinge-down movement for easy opening. Hinged on the short side.
  • Patented design.
  • Protrudes just 2 mm from the ceiling when fitted.
  • AT35 fits a structural opening of 560 x 640 mm, meeting NHBC guidelines.
  • Fabricated from steel, finished in white powder coat (RAL 9010).
  • Made from 80% recycled steel, with zero GWP and ODP ratings.

General information

Color

White

Finish

Powder-coated

Material

Steel

Shape

Rectangle

Length

640 mm

Width

560 mm

Height

60 mm

Guidance for specification option:

AT35.

100 mm

Guidance for specification option:

AT25/AT15.

Warranty description

Two year

Uniclass

Pr_30_59_36_01 Access panelsPrimary

CAWS

L20/60 Doors

L20/630 Hatches

Specification data - Access panels

Position

Ceiling-mounted.

Size

Structural opening: 560 x 640mm; Clear opening: 520 x 560 mm.

Frame

Exposed picture frame type.

Guidance for specification option:

25 mm on all sides.

Panel

-

Material

Steel.

Integral finish

Powder-coated, white (RAL 9010).

Latch or lock type

Twist lock.

Guidance for specification option:

With a tri-drive lock body; comes with an opening key.

Key lock.

Guidance for specification option:

Key included. Please note that the pole is not compatible with the key lock option.

Operation

Swing-down.

Integral accessories

Weatherstrips to frame.

U-value

0.15 W/m²K.

Insulation

PIR foam (100 mm).

Air tightness

Airtight at 600 Pa air pressure (positive and negative).

Sustainability data

Contains Red List materials

No

Country of material origin

United Kingdom

Country of product manufacture

United Kingdom

Recyclability

100% Steel

Recycled content

As defined in clause 7.8 of BS EN ISO 14021

40 %

Guidance for specification option:

Steel.

BIM objects

Platform Compatible Version
Revit
-

1

Literature

AT Airtight Loft Hatch Brochure

AT Airtight Loft Hatch Brochure

AT Airtight Loft Hatch Technical

AT Airtight Loft Hatch Technical

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