Circular Glass is a premium round roof light with elegant aesthetics. It is available in a range of sizes for mounting to a builder’s upstand or complete with a pre-fabricated insulated GRP kerb.
This contemporary glazing unit has a clean internal appearance, a slim exterior, and brings maximum daylight to modern interior spaces.
FEATURES
- Available in a range of sizes, with 4 standard fixed sizes delivered in 5 days from order
- Suitable for mounting direct to a builder’s upstand, or with robust insulated GRP kerb for new build and refurbishment applications
BENEFITS
- Modern and stylish circular flat glass rooflight design
- Elegant aluminium frame powder coated to RAL 7016
- Highly thermally efficient with thermally isolated frame, and double glazing offering Ur value as low as 1.16 W/m²K
- Safety of those below and above the rooflight assured thanks to a laminated inner pane and the product having been tested to be non-fragile to CWCT TN-67 for class 1 roofs and Class B non-fragile to ACR[M]001
- 10 year warranty available
- Available on prefabricated insulated GRP Kerb
GLAZING
- Glazed with a Low-E insulated double glazed glass unit of 31.5mm thickness
- 6mm toughened outer, 90% Argon filled cavity, 7.5mm laminated soft coat Low E inner with 1.5mm PVB interlayer
Additional resources
Key Features Summary
| Feature | Description |
|---|---|
| Design & Aesthetics | - Modern, stylish circular flat glass rooflight - Minimalist design with slim aluminium frame |
| Materials & Composition | - Double glazed unit: 6mm toughened outer pane + laminated inner pane with PVB interlayer - Frame: Powder-coated aluminium (RAL 7016) |
| Thermal Performance | - U-values as low as 1.16 W/m²K (with GRP kerb) - Centre pane U-value: 1.1 W/m²K |
| Sizes Available | - Range: 600mmø to 1500mmø - Bespoke sizes available |
| Durability & Warranty | - 20-year expected lifespan - 10-year guarantee available |
| Fire & Safety Standards | - Fire rated to Class A (EN13501-1) - Laminated pane prevents falling glass upon breakage |
| Weather Resistance | - Wind load resistance: 1800 N/m² - Snow load resistance: 1200 N/m² |
| Acoustic Performance | - Direct airborne sound insulation: 38 dB (Rw) |
| Installation Options | - Direct mounting to builder’s upstand - Option with 150mm insulated GRP kerb for ease of installation |
| Glazing Options | - Clear, solar control, and self-clean coatings available |
| Environmental Considerations | - Glass and aluminium components are recyclable |
| Ventilation & Opening Options | - Fixed units primarily; options available for manual or powered opening systems |
| Delivery & Availability | - Standard sizes delivered in 3-5 days - Bespoke solutions delivered in 15-17 days |
Safety Requirements and CDM
- Brett Martin Circular Glass achieves CWCT TN-67 non-fragility for class 1 roofs and ACR[M]001 class B non-fragility when new and fully installed following Brett Martin Daylight Systems’ installation guides. Foot traffic on roof lights should always be avoided; impacts such as foot traffic or a falling person may cause damage, which could necessitate roof light replacement.
Security
- All fixed Brett Martin Circular Glass units are fitted to a structural, insulated builders' upstand or GRP kerb using concealed fixings and colour-matched cover caps.
Fire Performance
- Glass is designated Class A to EN13501 part 1, as it is included in the list of CWFT (classified without further test) materials published in the Official Journal of the EU (see European Commission Decision 96/603/EC). These rooflights are glazed with a 6mm toughened outer pane and can therefore be regarded as having a BROOF(t4) classification as per building regulations.
Roof Applications
- Brett Martin Circular Glass units are suitable for flat roof applications with a pitch of 2°-15°. A minimum pitch of 2° is required to prevent water ponding on the glass, which leads to rapid dirt buildup. If a roof is less than the minimum recommended pitch, the builder’s upstand must be built with a slope to ensure that the installed pitch of the roof light is the minimum recommended pitch or greater.
Delivery 7-10 working days
600 | 900 | 1200 | 1500 |
Please be aware that you will need to handle the unloading of the items.
