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Access Trapezoid Double Skin with 30cm ECO Splayed Kerb 80x110cm

1 Customer Reviews
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    2.68 W/m²K



£808.68 inc. VAT
Product Code:
up to 20 working days
Size (W x L):
Skin Thickness:

Product Description




The complete package for the best price

By purchasing the flat roof access hatch, you're getting the whole package. The PVCu upstand, the dome with thickness of your choice, and the access hatch opening frame. The access hatch is made to be opened fully and is held open by gas struts for escape and access purposes. The only thing you need onsite is flashing and this is whatever your roof material is, be if it's GRP, felt or rubber for instance.

Award winning upstands

It doesn't matter which one you choose, you have the peace of mind knowing that all upstands are thermally broken and designed to help improve the overall thermal efficiency of your roof. Made from extruded PVCu and pre-finished white internally, it gives a perfectly finished design suitable for any interior.

Why not go one better? Upgrade to ECO

Upgrade from the standard upstand to the ECO upstand to receive the most thermally efficient, environmentally friendly rooflight upstand yet. Built with a strong nine-walled cellular structure, this thermally broken upstand also has a groove built into the upstand to allow for a smooth plasterboard finish. The ECO upstand has an overall U-value of 0.92W/m2K compared to the standard upstand that has a U-value of 2.2W/m2K

  • Density
  • Dimensions
    Thickness - 50mm
    Height - 160mm 

What is the best skin thickness for you?

  • Double Skin - Recommended to be used when replacing a dome, ie like for like replacement (U-value: 2.68W/m2K)
  • Triple Skin - Must be used on new builds to comply with building regulations (Part L Thermal Performance) (U-value: 1.78W/m2K)

How secure are the roof domes?

Unique to our access hatches are the high-security screwbolts, supplied factory fitted as standard to all units. Once installed, the fixing cannot be removed using common tools. The screwbolt provides a high level of resistance to tampering or forced entry.

The fixing screw or bolt is sleeved within the body of the screwbolt which avoids pressure being exerted on the rooflight glazing as the fixing is tightened. This virtually eliminates the risk of stress fractures caused by over-tightening.

What is a warm roof construction?

Warm roof construction is the adding of insulation to the top of the roof deck which then allows for less heat loss. For any extension, Building Control are enforcing warm roof constructions, and the 300mm high upstand is ideal for any warm roof construction.

Half of the uptand is hidden in the insulated roof space and the other 150mm seen on the roof complies to building regulations.

The simplest route to your roof is through the hatch

The access hatch complies to escape regulations and meets all building requirements for flat roof access. The hatch will open up to approximately 85° and is held open by telescopic struts. These struts are gas assisted hydraulic operation and can be set according to overall dome weight and prevailing site conditions.

By providing a safe route for personnel and equipment, the access hatch is the ideal choice if you regularly require access onto your roof. It includes a locking handle to secure the rooflight in the closed position.


When installed, the access hatches are expected to exceed the life of the roof covering and will not rust or be affected by atmospheric pollution. They are maintenance free once installed. The domes are guaranteed against the effects of defective design, materials or construction for 10 years, subject to certain conditions. 

The perfect glazing for warm rooms?

HeatReflect skin reduces ultraviolet radiation and is an advanced solar reflective glazing. Whilst maximising the benefit of natural daylight, it minimises the heat transmitted through the glazing. 

Ideal for schools, libraries or other public buildings as well as private homes.

  • Reflects 100% ultraviolet light
  • Reflects 68% solar energy
  • Allows 32% solar transmission

Delivery time

  • Next day delivery available if selected at the checkout, and when ordered before 12pm.
  • HeatReflect glazing has a delivery time of 7-21 working days.
  • Delivery time can be confirmed before ordering. Please call us on 01304 219922 or speak to us on our web chat service.

Product Specification

Brand Sterlingbuild
Finish Clear
Opening Mechanism Hydraulic
Operation Manual
Shape Trapezoid
Size (W x L) 80 x 110cm
Skin Thickness Double skin
Suitable for Access Yes
Suitable for Escape/Access Yes
Type Polycarbonate dome
Upstand 30cm
U-value 2.68 W/m²K
Ventilation N/A

Customer reviews

14 June 2016
Good product

Average Customer Review (5.0)