Flat Roof Window | Flat Roof Polycarbonate Dome Rooflight | Manual Opening | Brett Martin - Polycarbonate Rooflight

The Brett Martin Mardome Manual Ventilation Opening Rooflight for flat roofs is the standard specification opening dome unit from the Mardome rooflight range and opens up to approximately 300 mm.

Contemporary design and excellent thermal performance, the triple layer option achieves a centre pane U-Value of 1.84 W/m2K.

Manual ventilation opening rooflights can provide rapid ventilation into a property from the roof and are designed with features to ensure quick and easy installation.

The Mardome manual ventilation opening rooflight the first choice roof dome for flat roofs with a range of added extras to choose from including kerb options to suit almost every project.

Features and benefits:

• Provides natural light and rapid ventilation where required.
• Contemporary low rise dome profile.
• Quick and easy installation.
• The unplasticized polyvinyl chloride (PVC-U) kerb provides a clean interior and an unobtrusive external appearance which complements the surrounding environment.
• Designed to provide optimal thermal performance.
• Has a modern, low-rise profile.
• Class B non-fragility to ACR[M]001.
• Minimized risk of condensation due to the constant separation of the glazing skins across the full width of dome.
• Available in a variety of configurations.
• Individual fixings are concealed inside security caps.
• Manufactured in accordance with BS EN ISO 12567-2: 2005.
• BBA certified.
• Upstand: Un-plasticized polyvinyl chloride (PVC-U) rigid multi-wall extruded profile.
• Geometric ventilation area: Manual (worm gear): 0.300–1.093 m².
• Provides 8400 mm² equivalent area ventilation. See manufacturer's literature for further technical details.