Victorian Segment - NL305A
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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.
Manufacture:
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).