Dome and pyramid rooflights suitable for flat roofs up to 15º of pitch, designed to make optimum use of natural light.
Available with insulated upstands to improve thermal performance and reduce the risk of surface condensation.
Also available as dome / pyramid only to suit builders new or existing kerb.
Standard product features
Thermal transmission (typical U-values):
Light transmission (based on 3 mm thick glazing):
- Acrylic, opal diffused: 83%.
- Polycarbonate, bronze: 46%.
- Polycarbonate, clear: 86%.
- Polycarbonate, opal diffused: 50%.
- Thermoplastic classification (Approved Document B): Tp(b).
- BS 476-7: Class 1 (Class O to Building Regulations).
- Thermoplastic classification (Approved Document B): Tp(a)
High security screwbolts are supplied as standard: once installed, the fixing cannot be removed. The bolt provides a high level of resistance to tampering or forced entry.
Available in an extensive range of sizes:
- Square - from 400 x 400 mm to 2000 x 2000 mm.
- Rectangular - from 400 x 900 mm to 1850 x 3050 mm.
- Circular - from 500–2050 mm diameter.
Consult National Domelight Company for details.
- Thermadome Plus:
- Fully enclosed, tamper-proof frame for increased security.
- Extruded aluminium, 6063/T6 (to BS 1474).
- Mill finish as standard, polyester powder coating available to special order.
- Purpose-made to fit non-standard openings.
- Fabricated from mill-finished aluminium in an-all-welded construction.
- White foamed PVC-u insulating lining.
- Adaptors, collars and flanges enable standard sized domes to be fitted where a direct size match is not available.
- Therma-kerb GRP:
Glass reinforced plastic with 10 or 20 mm integral polyurethane foam insulation (standard or special).
- Therma-kerb PVC-U:
Multi-chambered PVC-U giving robust and thermally efficient performance.
Thermoformed from either polycarbonate or acrylic sheet in a number of tints. Polycarbonate Thermadomes have minimum 3 mm glazing: acrylic, Thermadomes have minimum 3 mm outer skin, with the inner skin thickness varying with dome size.
Burglar bars: Polyester powder-coated, white.