£795.12 inc. VAT

Access Trapezoid Triple Skin, Opaque with 30cm ECO Splayed Kerb 70x100cm

Delivery: up to 20 working days
Product Code:
up to 20 working days

£795.12 inc. VAT


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.

The ECO upstand

Made from extruded PVCu, the ECO upstand is 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. Pre-finished white internally, it gives a perfectly finished design suitable for any interior.

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 Opaque
Opening Mechanism Hydraulic
Operation Manual
Shape Trapezoid
Size (W x L) 70 x 100cm
Skin Thickness Triple skin
Suitable for Access Yes
Suitable for Escape/Access Yes
Type Polycarbonate dome
Upstand 30cm
U-value 1.78 W/m²K
Ventilation N/A

Product Reviews


All Sterlingbuild orders have FREE standard delivery when your order is over £100 + VAT.

However next day delivery will carry a small next day delivery charge which will be shown in the final shopping basket

Unfortunately additional delivery charges will apply if you live in the Scottish Highlands and UK islands. These delivery charges are based on additional costs from our national couriers.

If additional shipping fees apply, a member of our team will contact you before processing your order to let you know.

We will do our very best to make sure your delivery arrives by the date required, however manufacturer availability and delivery schedules cannot always guarantee this.

Should your estimated delivery date differ from that displayed on our website, one of our team will inform you by email or telephone

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