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TopClad
Heavy Duty Corrosion
Resistant Reinforced
Solid Coloured Glass
Roofing and Cladding
System
Introduction
In some highly corrosive
industrial sites and areas of
high salt contamination, high
build paint coatings on roofing
and cladding substrates such as
aluminium and steel may not
perform as expected. To address
these concerns, Alsynite NZ Ltd
has developed a unique heavy
duty roofing and cladding
material utilising advanced GRP
technology to formulate a
corrosive resistant cladding
system for use as an innovative
replacement for traditional
materials.
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Key Benefits
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The surface coatings and
substrate used in the
manufacture of Topclad have
been designed specifically
by Alsynite NZ Ltd to
withstand corrosive
atmospheres. The added
benefit provided by Topclad,
is the highly polished
corrosive resistant surface
on the underside of the
sheet.
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Topclad is solid-coloured to
match modern roof colours
(Subject to pigment
availability) this is
achieved by applying a 100
micron* Silmar coloured gel
coat layer to the GRP
sheeting substrate.
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Flexibility associated with
the Alsynite Gel coat
manufacturing process allows
different solid colour
pigmentation to be applied
to each side of the sheet,
particularly important where
the underside of the sheet
is not covered by a
membrane;
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Available to match a wide
range of roof profiles
including flat sheet;
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Lightweight cladding for
easy handling and
installation;
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Reduces solar absorption;
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Manufactured to any length.
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Lower freight costs
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Applications
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Wool scouring plants;
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Fertiliser buildings;
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Poultry and animal sheds;
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Acid plants and smelters;
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Galvanising plants;
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Effluent tank cladding;
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Extreme marine environments;
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Buildings in geothermal
areas;
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Compost plants;
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Tanneries
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Abbattoirs
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Special Applications
Where corrosion is of concern to
the interior of the cladding
system, an Alsynite Proprietary
high polished corrosion
resistant surface can be applied
to the underside of the sheet.
In areas of extreme corrosion
Vinyl ester resin can be
incorporated into the sheet for
maximum protection;
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Weight/Thickness of Sheeting
The standard weight for Topclad
is 2800g/m2 (1.9mm).
Other weights up to 4880g/m2
(3.06mm) are available subject
to minimum order.
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Colours
Topclad provides excellent
opportunity to replicate the
colours normally associated with
pre-painted metal roofing and
cladding products with the added
benefit of corrosion protection.
Topclad Standard colour range
is, Titania, Grey Friars,
Silver, Mist Green, and
Sandstone Grey. Colour swatches
can be viewed in the Alsynite
Technical catalogue. Other
colours are available subject to
pigment availability. All
Topclad Products are subject to
minimum order quantities
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Operating Temperature
Topclad will not become brittle
with age and will not soften or
crack within the designed
temperature operating range of
-30ºC to +70ºC.
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Fire Retardant
Topclad 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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Moisture
Where Topclad will be in
continuous contact with
moisture, Alsynite NZ Technical
department should be contacted
prior to ordering.
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Safety
To comply with the requirements
of AS/NZS 1562. 3:1996 Part 3
Plastic, all translucent roofing
products are classified as being
not suitable for foot traffic
irrespective of raw materials
used during manufacture. Any
foot traffic on the roof must be
via approved walk boards or
other purpose built traffic
platforms. All translucent
roofing shall have safety mesh
installed under translucent
roofing unless specifically
excluded in AS/NZS 1562.3: 1996
clause 2.4.3.2 or the Alsynite
Technical catalogue.
Purpose designed plastic-coated
mesh in meeting the minimum
requirements of the Building
Code is readily available. Solid
coloured GRP Roofing projects
should be clearly identified
with safety signage at roof
access points indicating that
the roofing is not designed to
support foot traffic and
directing enquiry to Property
Management. Alsynite NZ Ltd has
purpose designed “Hi-Viz” Safety
labels which can be purchased
for this purpose
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Thermal Expansion
2.2 x 10.5 cm / cm / ºC
E.g. 7m long sheet with a 40ºC
temperature change = 2.2 x 10.5
x (10 x 100) x 7 x 40 = 6.16mm
per 7m length at 40ºC
temperature rise.
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Chemical Resistance
Topclad has no known chemical
reaction with any construction
materials;
The sheeting is resistant to
solar deterioration and most
corrosive atmospheres;
Unaffected by solvents,
including hydrocarbons, and
provides excellent resistance to
most corrosive acids and
alkalis.
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Specification
The Translucent roofing shall be
Topclad (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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Flashings
For flashings information
contact Alsynite NZ Ltd.
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Product Handling
Care must be taken when handling
and installing the product to
avoid stress damage and/or
scratching of the surface.
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Warranty
Topclad is supported by a
comprehensive 25 year water
penetration warranty. Refer to
the Alsynite Technical Catalogue
for warranty details, or contact
Alsynite NZ Ltd.
*PVC SDS is an exclusive
distributor of Alsynite |
