Home > Companies > Surespan Ltd > Access Hatch for Roof Access 50 mm Thermally Broken SRHP50

Single leaf roof access hatch with a 50 mm thermal break and insulated with 0.43 W/m²K U-value polyisocyanurate insulation (non-combustible mineral wool also available). Manufactured from aluminium with a 300 mm kerb upstand.

Available with mill finish aluminium, or polyester powder coated.

Standard product features


2 mm aluminium with 50 mm thermal break


50 mm fully insulated kerb and lid, corner welded and reinforced.


300 mm in height with external curb liner, 50 mm thermal break and 50mm insulation.


Unbroken double seal to lid


Gas spring assisted manual opening, designed to be opened smoothly and easily with secure stay hold-open arm.


  • 50 mm HCFC and CFC free polyisocyanurate – U-value of 0.43 W/m²K.
  • 50 mm Non-combustible Mineral Wool Insulation – U-value of 0.63 W/m²K.


Fire rating:

Available up to 90 minutes. See SRH/TB-FR.

Acoustic Rating:

Available up to 45 dB available see SRH/TB-DB.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-25-28/422 Roof hatches

NBS Specification

NBS Buliding logo
This product is associated with the following NBS clauses:

Product specification

An important note about specifying



Surespan Ltd


+44 (0)1922 711185

Product reference



[600 x 600 mm]
[750 x 750 mm]
[900 x 750 mm]
[900 x 900 mm]
[1000 x 1000 mm]
[750 x 1500 mm]
[1200 x 1200 mm]
[750 x 2500 mm]
[750 x 3300 mm]


Mill finish as standard.
[Stainless steel]


[200 mm thermally broken and insulated]
[300 mm with a 50 mm thermal break and insulated]
As standard.
[385 mm thermally broken and insulated]
Superior insulation only.

Colour/ Finish

 - Internal powder coating:

Not required

 - External powder coating:

Not required


Insulation Options

[50 mm Standard insulation (0.43 W/m²K)]
As standard.
[50 mm Non-Combustible Mineral Wool (0.63 W/m²K)]
[50 mm Superior Polyisocyanurate (0.20 W/m²K)]
Requires 385 mm upstand.


[24 V electric motors]
[Gas springs]

Locking options

[L01 Cablock]
As standard.
[L02 Cablock with hasp and staple]
[L04 Cablock with external padlocking handle]
[L06 ABS Euro Cylinder with external key locking and thumb turn options]
[L07 European deadlock with internal and external key operation]


[Extended skirt liner]
Used in conjunction with retractable ZIP ladder.
[Fixed external handhold]
[Retractable Handhold]
Retracts into the opening of the roof hatch.
[Retractable ZIP ladder]
To suit Floor to ceiling height up to 3.5 m.
[SureGuard hand railing with self-closing gate]
Attached to the upstand of the hatch.

Manufacturer details

Leamore Close,
Leamore Enterprise Park,
West Midlands, WS2 7NL
Tel +44 (0)1922 711185
Fax +44 (0)1922 497943
NBS Plus
NBS National BIM Library