Light and Ventilation Ridges

Absolutely hailproof and permanently UV-resistant

Skylight Dome


hailproofThe skylight domes of all Müller light and ventilation ridges consist of biaxially stretched and coextruded Ondex rigid PVC. They are absolutely hailproof and permanently translucent. The patented manufacturing process makes additives such as impact resistance components (plasticizer) and UV stabilizers dispensable. In normal PVC, these components are needed, however, they are degraded due to the exposure to UV light after a few years with the consequence of a rapid embrittlement and yellowing of the material (see chart) and hail damage will be only a matter of time (see figure on the right).

Biaxially stretched and coextruded skylight dome Normal PVC Light Panels

Ondex Lichtplatte

Biaxially stretched and coextruded skylight domes have a high degree of translucency over the entire life cycle.

Picture at right:
An Ondex light panel, more than 20 years old, exposed to the weather.

The domes are highly impact resistant and break-proof and offer unsurpassed resistance against hail. They also provide low-temperature impact strength and can be machined non-splintering up to -20 °C.

falling weight 50kg
drop height 2.40 m
biaxially stretched Solvay Ondex light panel<

biaxially stretched Solvay Ondex light panel

falling weight 50kg
drop height 2.40 m
normal PVC light panel

normal PVC light panel

Schlepper gegen Lichthaube

Biaxially stretched Ondex Super HR light panels are classified as fall-through-proof by the Main Association of the German Institutions for Statutory Accident Insurance and Prevention even after 25 years of outdoor exposure.

They are also resistant to a wide range of chemicals, including urban exhaust gas and ammoniacal and saline air.

Ondex light panels are hardly flammable according to DIN 4102 / construction material class B1.
The light panels are rated as roofing being stable to spreading fire and they are certified - no burning droplets, no afterburning or afterglow, and no continued burning of fallen parts. In addition, the panels show very low smoke in case of fire and they support smoke and heat extraction.

 
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