GI Galvanized Roofing Sheet | Color Coated Galvalume Sheet Manufacturers

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.

Color Coated Galvalume/galvanized Sheet

Advantage

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.

Storage

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.

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

Comparison

Types of products	PVDF	SDP	SMP	RMP
COMPARISON
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.

Crimp Sheets

Crimp Roofing Sheets

Crimp Curved Sheet

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.

Tile Profile Sheets

Tile Roofing Sheet

Tiles Roofing Sheet

What isTHERMATECH ^TM

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.