| Rooflight
FAQ's |
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| Can
I adapt a top hung rooflight for fire escape? |
| Yes, providing
your required size complies with the necessary fire regulations (for details
speak with your local building control officer). Please call us for details
on cost and delivery. *The gas springs are not designed for everyday use
and may prove difficult to close once opened. For everyday use please use
the winder supplied with the rooflight. |
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| What
about condensation? |
| Condensation
is the water which results from the conversion of water vapour in the atmosphere.
The air which surrounds us in our homes always contains water vapour, which
is usually invisible. The warmer the air, the more water vapour it can hold
but there is a limit to the amount it can hold for a given temperature.
When saturated air comes into contact with a surface which is at a lower
temperature, the air is chilled at the point of contact and sheds its surplus
water vapour on that surface. When the double glazed units are used in conjunction
with heating and controlled ventilation the incidence of condensation should
be greatly reduced. In addition, we strongly recommend the use of our pre-fitted
timber liner to cover areas of exposed aluminium. Further information about
condensation is available from the Glass & Glazing Federation at www.ggf.org.uk |
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| What
should I do about Part L? |
| The double
glazed units that we use have a low U-value but the overall frame performance
exceeds the required limit 2.2 W/m2K. It is not possible to quote an installed
U-value as we do not install the rooflights ourselves and the nature of
roofing materials and finishes make it impossible for us to provide a figure
that is accurate for every situation. The rooflights are designed for use
in the following situations; Listed buildings, buildings situated in conservation
areas, buildings of architectural and historic interest (which are referred
to as a material consideration in a local authority’s development
plan), buildings within National Parks, areas of outstanding natural beauty
and World Heritage sites. Installation in all other properties should be
subject to local authority approval. |
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| How
do I maintain my rooflight? |
- Weatherstripping must be kept clean and free from dirt and grime
as required.
- All winders and escape pins should be kept clean and regularly lubricated
ie Vaseline, and these should also be tested at regular intervals.
- As with any organic coating, in order to maintain the aesthetic properties,
it is recommended that the coating be regularly maintained. The frequency
of such cleaning will depend on many factors including, geographical
location of the building, surrounding environment ie marine, swimming
pool, industrial or combination, levels of atmospheric pollution and
airborne debris such as sand or dust.
- Nothing harsher than white spirit should be used for cleaning and
under no circumstances should abrasive cleaners or cleaning solutions
containing ketones, chlorinated hydrocarbons, esters or alcohols be
used.
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| Do
I get a guarantee? |
| 10 years The
outer frame and opening leaf, polyester powder coating, stainless steel
fixing screws and weatherstripping. 5 years Double glazed units, glazing
tape, winder and timber liner. 1 year Gas springs (1 year from date shown
on each spring) This guarantee is subject to compliance with guidelines
supplied with order. |
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| What
is the difference between the “Cast” conservation rooflight
and other manufacturers ? |
| Many of the
rooflights available from other manufacturers are adapted from modern rooflights,
they sit much higher out of the roof, and are either made from welded steel,
or folded alumiminium sheet. The “Cast” rooflight is a low profile
conservation type rooflight copied from a 19th century pattern, made with
modern double glazed units and powder coat finish, but retaining all of
the style of the original rooflights. |
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| Can
the “Cast” conservation rooflight be installed in modern properties
? |
Yes, the
“Cast” rooflight will add light and style to both period and
modern buildings, in fact we have many clients building new properties and
installing “Cast” rooflights. As with all rooflight installations
you will need to discuss the application of the rooflight with your local
councils building control department, with particular reference to the Part
L regulations.
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