Bridging Mould - NL306A
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Standard Sizes:
| Square - | Rectangular - | ||
| 450 600 750 900 1000 1050 1200 1350 1500 1650 1800 1950 |
600 x 450 600 x 750 600 x 900 600 x 1000 600 x 1050 600 x 1200 600 x 1350 600 x 1500 600 x 1800 600 x 2000 600 x 2400 |
750 x 900 750 x 1000 750 x 1200 750 x 1350 750 x 1500 750 x 1800 750 x 2100 750 x 2400 900 x 1200 900 x 1350 900 x 1500 900 x 1800 |
900 x 2100 900 x 2400 1000 x 500 1000 x 1200 1000 x 1500 1000 x 1800 1000 x 2000 1000 x 2400 1200 x 1350 1200 x 1500 1200 x 1800 1200 x 2400 1500 x 1800 1500 x 2100 1500 x 2400 |
Benefits:
Bridging moulds are manufactured with a wider than
normal flange (122mm), allowing greater flexibility
for rooflight replacement, and applications where the upstand kerb is preformed,
thus affording greater tolerance of fit - without the need for an adapter kerb.
Manufacture:
Thermoformed from 3mm thick polycarbonate sheet, and available as single, twin
or triple skin units, built to the same exacting standards as the standard
rooflight range.
Sizes Explained:
The standard rooflight eg. NL306 @ 900 x 900, would have a clear light size
of 750 x 750 (150mm less than overall size).
The bridging mould @900 x 900, will have a clear light size of 600 x 600 (300mm
less than overall size) due to the enlarged flange. Bridging mould @ 900 x
900 will therefore suit preformed upstand kerbs with opening between 600 & 750,
depending on the flange size of existing kerb, see example above.
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).