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Topglass GC
Gel-Coated Roofing and
Cladding
Introduction
Traditionally glass reinforced
polyester translucent roofing
manufactured and supplied in New
Zealand has comprised of a
polyester weather surface film
and, with advancement in
technology, has improved
resistance against New Zealand's
high ultra violet climate.
Topglass GC however uses a
radically different
manufacturing principle in that
an extra thick nominal 100
micron** gel coat is applied to
the weather surface during the
manufacturing process, offering
very good resistance against
solar deterioration and
corrosive atmospheres.
Topglass GC can also be supplied
in "solid colours" providing an
excellent alternative to
traditional steel and aluminium
cladding systems.
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Key Benefits
-
Manufactured from an acrylic
modified polyester resin
system and incorporating
additional ultra violet
stabilisers, Topglass GC
utilises anti-static high
quality glass fibre rovings
to give maximum strength
during the curing and
bonding process;
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The ultimate benefit of the
Topglass GC product over
general purpose grades of
GRP natural roof lighting
products is the addition of
a UV-stabilised 100 micron
Silmar gel-coated surface
which is reactive thermo-set
to provide a high gloss
surface;
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Topglass GC, which is
manufactured to meet the
requirements of AS/NZS
4256:3.1994, is economical
and provides flexibility
whilst resisting UV
degradation and yellowing
much longer than is commonly
experienced with general
purpose grade translucent
roofing products.
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Applications
-
Roof and wall lighting to
all commercial, industrial,
institutional and other
buildings requiring long
term natural lighting
without early surface
degradation;
-
School/Kindergarten and
public outdoor areas
requiring good UV
protection.
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Special Applications
Topglass GC can be pigmented to
meet varying light transmission
requirements
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Surface Coatings
The Silmar 100 micron** gel coat
used in the manufacture of
Topglass GC gives very good
protection against solar
deterioration. The reverse side
of the sheeting is protected
with a 20 micron UV stabilised
Polyester film. Where corrosive
atmospheres exist which affect
the underside of the sheeting,
Alsynite Proprietary high-sheen
corrosive resistant surface can
be supplied in place of the
film.
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Colours
Topglass GC is available in
standard colours of Clear, White
Tint, Opalescent, Opaque UV
Smart, Alsynite Green, Pool
Blue, Bronze and Grey Tint.
Cool versions can be supplied as
Topglass SPF 4, and Topglass SPF
8 along with Topglass GC Cool.
(See heat reducing sheeting)
Other colours and pigment
variations are available on
request to suit specific design
applications. Consult Alsynite
NZ Ltd as minimum quantities
apply.
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Heat Reducing Sheeting
Topglass GC can be supplied as
heat reflective translucent roof
sheeting. Topglass SPF, and
Topglass GC Cool
Topglass SPF: Supplied as
Topglass GC SPF 4 and SPF 8,
these revolutionary new products
utilise a purpose developed
compound, similar to that used
in the manufacture of modern day
Sunglasses, whereby the product
differentiates and then
separates Infra-Red (heat)
whilst continuing to maintain
maximum light transmission .
Topglass GC SPF is available to
match all roofing profiles
Topglass GC Cool: A lower cost
product than Topglass GC SPF,
which utilises innovative
pigements to absorb and reflect
heat away form the interior of a
building whilst maintaining
long-term effective light
transmisison. Topglass GC Cool
is available to match all
roofing profiles.
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Operating Temperature
The operating temperature
parameter of Topglass GC is-30ēC
to + 70ē C.
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Fire Retardant
Topglass GC can be supplied as
fire retardant sheeting.
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Trafficability
Where trafficability is of
concern contact Alsynite for
specific technical support.
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Severe Corrosion Environments
In areas where corrosion is
severe Topglass GC can be
manufactured using a special
purpose vinyl ester
corrosion-resistant resin
system.
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Specification
The Translucent roofing shall be
Topglass GC (Insert tint/colour)
reinforced Polyester roof
sheeting as manufactured by
Alsynite NZ Ltd to comply with
AS/NZS 4256.3 JAS-ANZ
Certification Licence No 2349
The sheeting shall be
.........g/m2 or .........mm and
manufactured to conform to the
nominated roofing and cladding
profile. Installation shall be
carried out in accordance with
the requirements of AS/NZS
1562.3: 1994, NZ Roofing Code of
Practice and Alsynite NZ Ltd
Technical catalogue.
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Warranty
Topglass GC is supported by a
comprehensive 20 year water
penetration warranty and a
separate 20 year light
transmission project warranty.
Specific targeted project
warranties maybe available.
Refer to the Alsynite Technical
Catalogue for warranty details,
or contact Alsynite NZ Ltd.
*PVC SDS is an exclusive
distributor of Alsynite |
