roof windows types

UV
Laminated Glass P1 Class - LUX
This type of glazing is made up of two sheets of glass, each 3
mm thick, and between each layer is a 0.38 mm layer of PVB
plastic membrane. Laminated glass is positioned on the inside
of the double glazing, and has a low emission coating. The
outside pane is made of toughened glass. If broken, laminated
glass remains stuck to the plastic membrane. Laminated glass
also reduces penetration of UV rays by up to 95%.
Energy Efficient Glazing
This is triple-glazing which includes a 4 mm thick toughened
outer pane, and two 4 mm toughened panes with low emission
coating on the inner faces of the glass. The 10 mm space
between panes is filled with inert gas. This method of glazing
construction ensures exceptional energy efficiency U Value
0.5Wm²K, almost completely preventing heat loss through the
roof window.
Sound Proof Glazing
Significantly reduces penetration of noise. Constructed from
toughened glass on the outside, and specially laminated glass
inside. The laminated glass has a layer of soft sound proofing
epoxy resin and a low emission coating. The glazing cavity is
filled with gas, which additionally reduces noise penetration.
Sound-proof glazing is made to an exceptionally high specification
Rw = 40dB. Sound-proof windows have two seals but
do not include an air vent.
UV
Security Glazing, Class P4, 99% UV Protection
Security glazing offers increased resistance against breakage.
Security glass is positioned on the inside, and is constructed
of two sheets of 4 mm glass with a layer of 1.52 mm PVB in between.
Security glazing includes a low emission coating. The
outer pane is made of toughened glass.
Use of security glazing:
— Significantly reduces the possibility of break-ins through
the roof window.
— In cases of damage or shattering, pieces of glass will stick
to the membrane, reducing risk of injury.
— Reduces harmful effects of UV radiation by 99%.
— Has excellent acoustic properties.
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