Manufacturers of
Rooflights, Structural Glazing,
Canopies & Walkways

Thermoformed Barrel Vaults

Naturalight polycarbonate thermoformed barrel rooflights are designed to be a smart, robust and reliable method of allowing natural light into a room. Available in a range of colour tints (clear, diffused, opal and bronze) they can be made to suit customer specifications. They are manufactured using a thermoforming process in single, double, triple and quadruple skin construction, allowing the rooflight to meet architectural requirements.

U-values:
Double skin – 2.6 wm2k
Triple skin – 1.8 wm2k
Quad skin – 1.4 wm2k

Light transmissions:
Clear 87% – a high light transmission
Allows full vision of views and objects/Minimum privacy
Diffused 84% – a high light transmission
Increased privacy/Reduced glare and shadows
Opal 50% – a low light transmission
Maximum privacy/Reduced glare and shadows/Prevents vision of views and objects
Bronze 50% – a low light transmission
Reduced solar heat gain/Cuts down the brightness of sunlight

Solar gain:
The solar gain (‘g’ value) can be improved to a more manageable level by way of introducing varying tint interlayers to the polycarbonate rooflight construction thus reducing the heat build up occurring from transmittance through the rooflight area

Acoustic:
Typical airbourne sound reduction for a triple skin rooflight is 30-35db

Fire rating:
Products comply with current uk building regulations covered under BS476 and european standards covered under BS EN 13501

STATEMENT:
Naturalight systems ltd have a continuous research and development programme and reserve the right to improve or modify products without notice

Rooflight Energy Factors

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Thermoformed Barrel Test Report

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