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| Working with In
Plane Site Assembled Rooflights |
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| Installation |
| Correct installation of rooflights is important to ensure
they achieve the correct level of safety performance and give
long term weather tightness. Please refer to our Technical Guides
for full information. Methods of installation for GRP and Marlon
CS Longlife are diffferent, please contact the Technical Department
for further details. |
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| Handling |
GRP and polycarbonate sheets can be damaged by incorrect handling
and should be treated with care. The sheets are usually delivered
in
loose stacks and need to be unloaded and manoeuvred by hand.
As the sheets have sharp edges and corners, they should be regarded
as a hazard, and protective measures such as gloves and safety
clothing should be worn. If forklifts are used, care must be
taken to avoid damage and use of a separate support sheet may
be necessary. Handling rooflights in windy conditions should
be avoided, as they have a large surface area. Special care
should also be taken when carrying across exposed rooftops. |
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| Stacking |
| GRP and polycarbonate sheets should be stacked on flat ground
on 100mm wide wooden battens (free from nails and debris) not
more than 1.5m apart, making sure that no sharp objects are
under the sheets. Different profiles in the same stack must
be separated with battens, located directly above each other
and maximum stack height should be 1.2m high.Tie down stacks
or individual sheets to secure against wind but never put weights
on rooflights. |
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| Storage |
| GRP and polycarbonate sheets should not be exposed to weather
before installation and should be stored indoors if possible,
or kept covered with a carefully secured tarpaulin to prevent
rain or sun damage. |
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| Maintenance |
| In typical UK conditions there should be no significant deterioration
or yellowing of GRP rooflights for 20 years and the sheets should
remain serviceable in excess of 25 years, subject to correct
maintenance, with ‘Diamond’ surface protection increasing
this to over 30 years. Polycarbonate sheets should remain serviceable
in excess of 15 years. Rooflights, fixings and sealants should
be inspected for damage every 2 3 years. Fixings should be re-tightened
or replaced as necessary. Rooflights should not be painted over
with an opaque covering, as this can be dangerous and may cause
premature failure. |
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| Cleaning |
| Use warm water and mild detergent to both prevent
any growth that may attack the protective surface, and remove
dirt that could lead to heat build up. Use of harsh chemicals
or abrasive cleaners should be avoided. |
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Technical
Support |
Please
contact Brett Martin Daylight Systems for further guidance,
e.g.
technical bulletins sheets, NBS product specification.
etc |
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