Pyramid - NL301








Standard Sizes






600 x 900mm
600 x 1200mm
750 x 900mm
900 x 1200mm
900 x 1500mm
900 x 1800mm
1200 x 1800mm
1200 x 2400mm

Our standard roof light @ 900 x 900, would have a clear light size of 750 x 750 (150mm less than overall size). (angles width 27 degrees, diagonals 20 degrees)

For Non-standard sizes, we can offer our ‘Adaptor kerb’ (see data sheet NL616) which is manufactured to suit our standard range and splayed at the base to suit the existing upstand kerbs.

Thermoformed from 3mm thick polycarbonate sheet, and available as single, twin or triple skin units, our roof lights benefit from high impact resistance and long life, due to the UV protective coating applied to the outer skin during sheet manufacture. A wide range of colour and transparency options are available to suit the majority of applications, the most commonly supplied to our clients being clear, clear patterned, opal or bronze anti-sun. Please contact our technical staff if you require colour samples or information on additional colour options.

Technical Information:

Impact & breakage resistance: No breakage within limits of test.

Light transmission values (approx): Clear 80% Opal 48% Clear patterned 80% Bronze 50%

Thermal insulation values: Single skin 5.2 Twin skin 2.5 Triple skin 1.9
(W/m 2 degrees celsius)

Solar energy and anti-glare: Light 55% Anti-glare 67%

Fire resistance: BS 476pt 7 Class O - BS 476pt 3 Class AA

Acoustic Properties: BS6262 - Mean sound reduction -
Twin skin polycarbonate 6/29/6 31Hz

Cleaning / Maintenance:
Cleaning - Thermoformed roof lights should be washed down with a mild detergent and warm water. Do not use abrasives.

Maintenance - Annually check mechanical components, and lubricate where necessary, actuating components.

Impact Test:
At the request of Nulite Ltd, B.R.E tested various sized samples of Domed roof lights with either a PVC or steel upstand kerb, the test assesses the fragility of the specimen roof lights when subjected to an impact by a large soft body as in the standard ACR (m) 001:2000 (full details on the test report are available on request).

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