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Color Coated Galvalume & Galvanized Sheet


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 While Storage


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.

Technical Specification

Base Metal High Tensile Steel
Coating Mass 150 AZ / 70 AZ
Yield Strength 550Mpa

Paint Properties Comparision

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 


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

Alfa Manufactures Eco panels which are extremely effective thermal insulation qualities and high strength to weight ratio at low temperatures. Sandwich Puf Panels Aluminum Foil Faced used widely for building roofs and walls in several industries for under deck roof as it is cost effective. The internal side of the insulated panel has a surface finish manufactured from aluminum foil of thickness 0.08mm.

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.

  • Commercial and industrial building
  • Logistics center
  • Offices
  • Rural constructions
  • Sports hall


Solar Reflectance Technology?

ALFA PEB LTD can supply TATA BLUSCOPE COLOR BOND - THERMATECH painted roofing sheets which has the following advantages.

  • THERMATECH paint uses solar reflecttance technology.
  • It loers the temperature by absorbing the heat from the sun
  • Reduces Annual cooling energy consumption by 15%
  • Reduces roof temperature by 6 deg centigrade.
  • Increases SOLAR REFLECTANCE INDEX (SRI) of thr roofing sheets
  • Higher SRI value indicates lower roof surface temperature
  • THERMATECH technology optimizes the thermal performace of every color in the standard COLORBOND steel without changing their appearance and provides greater thermal comfort all-year round, whilst using less energy for air conditioning and helps mitigate the urban heat Island (UHI) effect.
  • Lower energy consumption for the same effort.
solar reflectance technology