Rooflights for flat roofs: Hard shell, insulated core
Letting sunshine and moonlight in but keeping heat and cold out: alwitra rooflights are available in single-, double-, triple- and multi-shell versions and always feature additional thermal insulation properties. Moreover, they ensure good light diffusion with low loss of light. Another reassuring fact: the standard-fitted burglary-resistant screw system gives thieves an extra hard time.
Ensuring both good thermal insulation and excellent room illumination
Ideal light diffusion with low loss of light
Maximum protection against burglars
- Double-shell rooflight
- Made of two domed, extruded PMMA plastic shells
- Acrylic glass, providing for particularly high transparency, impact-resistance, and UV-resistance
- U-value of 2.68 [W/m²K]
- Triple-shell rooflight
- Made of three curved extruded PMMA plastic shells
- Made of two opal shells and one middle clear shell (optional: 3 clear shells)
- U-value of 1.70 [W/m²K]
- Multi-shell rooflight
- Made of one transparent domed PMMA plastic shell, a transparent domed SPC panel and an opal acrylic middle shell.
- Excellent thermal insulation properties, U-value of 1.23 [W/m²K].
- Ideal for buildings with increased thermal insulation requirements
Varieties
Ventilation at its best.
Whether as room ventilation, natural smoke vent or roof hatch... every rooflight variety requires a vent frame. At alwitra, of course, they come delivered pre-assembled.
- Rooflight with manual telescopic spindle
- Hooked to brackets at the upstand and the vent frame
- Opening with optional crank rod
- If the side length exceeds 130 cm, a tandem version with two interconnected spindles is installed with front upstand (MAG-6)
- Maximum comfort
- Operation by switch or optional radio remote control
- If the side length exceeds 130 cm, a tandem version with two electrically interconnected actuators is installed
- Ensuring access to the roof, as required
- Gas springs installed on both sides
- Can be combined with manual spindle, electric opening, or NRAA