The Access Hatch Rooflight is specially designed to provide safe and convenient access to residential roof spaces. It features a variety of glazing types and finishes, so you can select the perfect Access Hatch for your needs.
Our Access Hatches are available in different sizes - simply pick the dimensions that match best with your requirements. Every Access Hatch includes an opening mechanism internally operated by gas springs and a hinged dome module, resulting in an angle between 70-83° when opened.
Enhance safety measures at home with our durable Access Hatch Rooflights, providing easy access through residential roof spaces without sacrificing security or convenience. Browse our website today and find the perfect access hatch for your property!
Fitting and Measurements
The product data sheet is available at the foot of this page, together with PDFs for both CAD drawing and installation. Please also read through the instructions below for the most accurate results.
If you are purchasing with an upstand, the size selected from our menu should match your structural opening. For example, purchasing a 900mm x 900mm requires a structural opening of 900mm x 900mm. The rooflight size should be cut to match the size of the structural opening hole providing you are purchasing with either a 150mm or 300mm upstand.
Conversely, if you are purchasing without an upstand, a 900mm x 900mm would require an upstand with an external size of 900mm x 900mm, a width of 75mm and a height of 150mm.
The Centre Pane U-Value provides the degree of thermal efficiency relating to the glazing type.
The U-Value should be at least 2.2w/m2K to meet Part L Building Regulations. The manufacturer recommends that every application uses a minimum of triple skin rooflights.
The light transmission properties of the Reflex polycarbonate rooflight are displayed in the table below:
Clear: High Visibility
Optimal light transmission
Improved visibility throughout the dome
Opal: Solar Reduction and Diffused Light
Combines maximum generation of diffused light with privacy
Reduces solar heat gain and blocks solar glare
Minimises visibility through dome
Patterned: Enhanced Privacy
Enhances transmission of light while protecting privacy
Minimises visibility through dome
Bronze: Solar Reduction
Minimises heat gain and solar glare
Delivers lower light transmission
A 10-year manufacturer warranty is provided.
The lead production time for these rooflights is 2-3 days when ordered in one of the following sizes:
450 × 450
600 x 600
750 × 750
900 × 600
900 × 750
900 × 900
1050 × 600
1050 × 750
1050 × 1050
1200 × 600
1200 × 900
1200 × 1200
1350 × 1050
1350 × 1350
1500 × 1050
1500 × 1500
1800 × 900
1800 × 1200
1800 × 1800
Other sizes are available on request. Individual lead production times for sizes other than above will vary depending on capacity, but will typically be 3-7 working days.
On delivery, please make sure there is a suitable person onsite who is able to offload the product from the vehicle. The driver is unable to assist with lifting or moving the item, and will be unable to remove the product from the transport due to insurance purposes. It is advised to organise installation, including any necessary equipment, after successful delivery.
TB200 Mardome Brett Martin Data Sheet
TB186 Installation Guide Skylights
Access Hatch Rooflight CAD
Skylights Roof Lanterns
Skylights Roof Lanterns rooflights are manufactured by Brett Martin. All Brett Martin’s Mardome rooflights are designed and manufactured in Coventry in the heart of the UK, with many products available for 48 hour delivery as standard anywhere in mainland UK.