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COLOR COATED GALVALUME/GALVANIZED SHEET

Industrial Roofing / Cladding

The sky is the limit when designing with pre coated sheet

Coated Steel Sheet has been used extensively by the construction industry throughout the World for nearly two centuries. Because of its excellent corrosion resistances, it has become the preferred material for a wide range of construction uses, particularly roofing and walling.

Coated steel sheet is a unique building material. It combines the strength of steel with the excellent corrosion protection of zinc/aluminum alloy coatings. It can be punched, roll-formed and joined in to a limitless number of structural and decorative building products.

  • Excellent design & secure fastening systems ensure the security and weather-light performance of coated steel roofing during extreme weather. Coated steel sheets are resistant to fire.
  • Excellent thermal properties that keep the building cooler in summer and warmer in winter
  • Prevents noise and provide quite roofing system, particularly when used in combination with appropriate insulation systems.

Do's & Dont's

MATERIAL HANDLINGS, STORAGE & SAFETY GUIDELINES FOR COATED STEEL COILS / SHEETS

This material handling, storage & safety data sheet is applicable for Pre-painted / AI-Zn Alloy coated / Galvanised steel products under the following instructions after the shipment from ALFA STEEL. AlfaSteel's recommendations on the handling of Alfa Pre-painted / AI-Zn Alloycoated / Galvanised productsteelcoils, sheetforroofing / building / cladding construction / installation.

  • Handling: Alfa Pre-Painted / AI-Zn Alloy coated / Galvanised steel product should be handled with properequipments during loading & offloading of the material. Le., Forklift, Crane. C hooks, Nylon Belts. High tensile straps cutter etc. Material should be properly lashed, chocked & covered for transportation. Coils handling should be very smooth without any rapid shock during lifting movement from one place to another place. Pre-painted coils should not be rolled on floor.
  • Safety wares like helmet,hand gloves,shoes should b eworn by material handling personne.
  • Storage: Alfa Pre-painted / AI-Zn Alloy coated / Galvanised steel product, if not required for immediate use, should be neatly sacked (sheets or coils) clear or ground without any water seepage inside. In case the material is left in open, it should be protected from rain and moisture with tarpaulins or similar covers and stacked at an angle to assist drainage.
  • The polythene used to wrap the pack is not suitable for prolonged exposure in the open since sunlight modifies its properties.
  • Forming: Equipment should be clean so that any oil / grease or foreign particle does not come in contact with the pre-painted surface. Sheets should not be dragged over other sheets or equipment surfaces.
  • Any debris or surplus items such as fasteners, iron drill particles to be carefully removed each day after completion of installation work Le. swarf, surplus items such as fasteners to be removed from work place.
  • In case of material with protective film, the film should be removed immediately during the installation.
  • Durability of product is subjected to environment conditions in surrounding atmosphere at installation site.
Base Metal High Tensile Steel
Coating Mass 150 AZ / 70 AZ
Yield Strength 550Mpa
Properties SUPER/HIGH Durable Polyester RMP SMP PVDF PVC
Flexibility Good Fair Poor Good Excellent
UV Resistance Good Poor Fair Excellent Good
Gloss Retension Excellent Good Good Poor Fair
Chalking Resistance Good Poor Fair Excellent Fair
Costs Marginal Lowest High Very High High
Durability Yrs 10 8 10 15  
SST Hrs 1000 750 750 1000 1000
Consumption per lit. Colour Specific 
Foam Adhesion Colour Specific 

COMPARISON

Types of products PVDF SDP SMP RMP

 

 

Description

Highest UV resistance coating

based on a mixture of PVDF and Acrylic resins. ( Applicable in adverse climatic condition like High rise building, Malls,

Facades )

This product gives best possible UV resistance of polyester based coatings ( Applicable in Roofing, façade cladding of

residential)

Silicon Modified polyester based coatings for elevated temperature areas

 

A wide & varied range of products based on polyester resins

Corrosively Environment

C3 Category

C2 Category

C2 Category

C1 Category

End Use

Especially suitable for facades in residential areas.

Roofing & Siding

Roofing & Cladding

Facades, Roofing& Ceilings

Resin System

PVDF & Acrylic Resin (70:30)

Super Durable Resin

Silicon Modified Resin

Modified Polyester

Resin

Pigments

High Performance Inorganic

Pigments

High Performance Pigments

Regular Organic and

Inorganic Pigments

Regular Organic and

Inorganic Pigments

Shades

Restricted Colours

Restricted Colours

All Shades

All Shades

Recommended DFT

18-20µ

18-20 µ

14-20 µ

14-20 µ

Gloss* @ 60 (%)

10-35

10-80

10-80

10-80

QUV* @ASTM G154

4000Hrs

1500Hrs

1000Hrs

1000Hrs

SST** @ASTM B117

1500 Hrs

1000Hrs

1000Hrs

1000Hrs

Humidity

2000 Hrs

1000 Hrs

1000 Hrs

1000 Hrs

Hardness

Soft film with low scratch

resistance

Good Scratch resistance

Very Good scratch

resistance

Excellent scratch

resistance

Flexibility

Flexible Top Coats

Medium Flexible

Semi Hard Topcoats

Average Flexibility

Chemical Resistance

Excellent

Excellent

Good

Average

Warranty

10-12 years warranty based on

shade & territory

8-12 years warranty based on

shade & territory

5-10 years warranty based

on shade & territory

No Warranty



Crimp Sheets

Easy to install, crimped curved sheets provide versatility and creativity that bring new and refreshing design to industrial and domestic buildings. The combination curves and contours in concave and convex shapes with flats and angles can be used to add an aesthetic appeal to the building.

These sheets provide absolute design freedom with significant cost saving in construction. This is possible because

  • Crimped sheets require less supporting framework for parapets and roofs.
  • Reduction or elimination of many flashing/cappings.
  • Less cladding material required for covering a given curve.

Tile Profile Sheet

Alfa offers traditional and popular Mangalore Tiled shape profile. Elegant looking clay tiled profile sheets are available in variety of colors, adds beauty to your roof. Tile Roof Sheet offered come in precision designed and construction finish so as to perfectly match up with the different roofing requirements. Further, the superior construction values of these sheets also make them provide for excellent resistance from corrosion as well as deliver optimum sound insulation and fire retardant support as demanded by the customer’s insulated panel.

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