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Topclad

Heavy Duty Corrosion Resistant Reinforced Solid Coloured 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.


 

Key Benefits

  • The surface coatings and substrate used in the manufacture of Topclad have been designed specifically to withstand corrosive atmospheres. The added benefit provided by Topclad, is the highly polished corrosive resistant surface on the underside of the sheet.
  • Topclad is solid-coloured to match modern roof colours (Subject to pigment availability) this is achieved by applying a 100 micron* coloured gel coat layer to the GRP sheeting substrate.
  • Flexibility associated with the 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;
  • Available to match a wide range of roof profiles including flat sheet;
  • Lightweight cladding for easy handling and installation;
  • Reduces solar absorption;
  • Manufactured to any length.
  • Lower freight costs

 

Applications

  • Wool scouring plants;
  • Fertiliser buildings;
  • Poultry and animal sheds;
  • Acid plants and smelters;
  • Galvanising plants;
  • Effluent tank cladding;
  • Extreme marine environments;
  • Buildings in geothermal areas;
  • Compost plants;
  • Tanneries
  • Abattoirs

 

Span Capacity Chart

 

Spanning Capacity Eco-Lite 10 and Topglass Grades

 

                                   Sheet Weight g/m2                   

   Recommended number of fasteners

 

2400

3050

3660

4270

4880

                Roof

                Wall

Profile

                                 Purlin Spacings                      

Mid Span

End Span

Mid Span

End Span

Corrugated

1200

1500

1700

 

 

4

6

6

6

Trimdek

1500

1700

2000

2300

 

5

5

5

5

Spandek

1600

2000

2300

2600

2800

5

5

5

5

Longspan

1600

2000

2300

2600

2800

5

5

5

5

Kliplok 406

1400

1700

2000

2300

2600

3

3

3

3

Kliplok 700

1400

1700

2000

2300

2600

4

4

4

4

Speedek

1400

1700

2000

2300

2600

3

3

3

3

The above spans are recommended for wind loads up to 1 Kpa

 

 

 

 

Physical Properties Chart

Specific Gravity 1.45
Tensile strength 90 Mpa
Surface Hardness minimum 40 Barcol
Impact strength minimum 1.96 Mpa
Shear strength 90 Mpa
Modulus of Elasticity 5,500 Mpa
Thermal Expansion 2.0 x 105 cm/°C
Water Absorption 0.2% in 24 hrs at 26°C
Flexible strength 145 Mpa
Service temperatures -20 to 95°C
Available colours Opal, other colours available upon request (Min order qty)

 



Expansion Data Chart

Material Expansion Comparisons 0 - 40°C temperature variation
  Fibreglass Polycarbonate Steel Aluminium
Thermal
expansion
7.2mm 16.2mm 2.9mm 5.8mm
Thermal
coefficient
3x10-5cm/cm/°C 6.75x10-5cm/cm/°C 1.2x10-5cm/cm/°C 2.4x10-5cm/cm/°C





Weights Chart

Series Weight Kg/M2
2400 2.4
3050 3.05
3660 3.66
4270 4.27
4880 4.88

 


 

Special Applications

  • Where corrosion is of concern to the interior of the cladding system, a 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;

 

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.


 

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 FGW Corporation Technical catalogue. Other colours are available subject to pigment availability. All Topclad Products are subject to minimum order quantities


 

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.


 

Fire Retardant

Topclad can be supplied as fire retardant sheeting.


 

Trafficability

Where trafficability is of concern contact FGW Corporation for specific technical support.


 

Moisture

Where Topclad will be in continuous contact with moisture, FGW Corporation Technical department should be contacted prior to ordering.


 

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 FGW Corporation 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. – FGW Corporation Pty Ltd has purpose designed “Hi-Viz” Safety labels which can be purchased for this purpose


 

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.


 

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.

 

Specification

The Translucent roofing shall be Topclad (Insert tint/colour) reinforced Polyester roof sheeting as manufactured by FGW Corporation to comply with AS/NZS 4256.3:2006
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 and FGW Corporation Pty Ltd Technical catalogue.


 

Flashings

For flashings information contact FGW Corporation.

 


 

Product Handling

Care must be taken when handling and installing the product to avoid stress damage and/or scratching of the surface.


 

Warranty

Topclad is supported by a comprehensive 25 year surface warranty. Refer to the Technical Catalogue for warranty details, or contact FGW Corporation.


Download Installation Instructions (requires Adobe Acrobat to view)

Download Topclad Brochure

Design considerations

Profiles

Safety Data

 


For the Technical Catalogue or further information please use our online contact form



** Nominal 100 micron gel coat

    
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