Circular Cone - NL305








Size Options:
Many of our product range can be incorporated as an upstand kerb giving further adjustment when none standard sizes are required, please speak with our technical department.

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 or opal. 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 C)

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

Fire resistance: BS476 pt7 Class 0 / BS476 pt 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.

Points to check prior to advising us of your requirements:
When placing an enquiry/ order please be sure to note the roof opening size , and where possible the width of the upstand kerb.

impact Test:
At the request of Nulite Ltd, B.R.E tested various size samples of Domed roof lights with either a PVC or steel upstand kerb, the test assesses the fragility of the specimen roof light 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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