JSW Colouron+ Sheet Specifications and Weight Chart

JSW Colouron+ is a colour-coated galvanised steel roofing sheet available in Trapezoidal and Hi-Rib profiles, with an effective cover width of 1000mm for Trapezoidal and 760mm for Hi-Rib. Standard thicknesses range from 0.40mm to 0.63mm with base metal weight from 3.14 kg/m² to 4.95 kg/m², manufactured to IS 277 and IS 15961 standards for zinc and colour coating compliance.

JSW Colouron+ — Quick Reference

Profiles: Trapezoidal, Hi-Rib (Tile)
Effective cover — Trapezoidal: 1000 mm
Effective cover — Hi-Rib: 760 mm
Available thicknesses: 0.40 mm, 0.45 mm, 0.47 mm, 0.50 mm, 0.55 mm, 0.63 mm
Standard lengths: 6 ft, 8 ft, 10 ft, 12 ft, 14 ft (custom lengths available)
IS compliance: IS 277:2003 (zinc coating), IS 15961 (colour coating)
Zinc coating class: Z275 minimum (275 g/m² total both sides)
Colour coating: PVDF or polyester, 20–25 micron top coat

Profile Types and Dimensions

JSW Colouron+ is manufactured in two primary profiles suited to different roofing applications in India.

Trapezoidal Profile

The Trapezoidal profile is the most widely used for industrial sheds, warehouses, and commercial buildings. It has flat-topped ribs with angled sides, providing good structural rigidity and effective drainage. Key dimensions:

Overall width: 1130 mm (nominal)
Effective cover width: 1000 mm (after overlap)
Rib height: 35 mm
Rib pitch: 167 mm centre-to-centre (6 ribs per sheet)
Recommended purlin spacing: Up to 1500 mm for 0.47 mm thickness
Minimum roof slope: 5° (1:12 pitch)

Hi-Rib Profile

The Hi-Rib (also called Tile or Roman) profile mimics the appearance of clay tiles and is preferred for residential and semi-commercial applications where aesthetics matter. Key dimensions:

Overall width: 900 mm (nominal)
Effective cover width: 760 mm (after side lap)
Rib height: 50 mm
Pan width: 175 mm
Recommended purlin spacing: Up to 1200 mm for 0.47 mm thickness
Minimum roof slope: 10° for Hi-Rib profile

JSW Colouron+ Weight Chart — All Thicknesses

Weight per m² is calculated using the formula: Thickness (m) × Steel density (7850 kg/m³) + Zinc coating allowance (~0.15 kg/m²) + Colour coating allowance (~0.05 kg/m²). Values below are for the base metal plus coatings in flat-sheet equivalent; profiled sheet weight will be marginally higher due to the corrugation development length.

JSW Colouron+ Trapezoidal Profile — Weight Per Sheet (kg) by Thickness and Length
Thickness	Weight/m²	6 ft (1.83 m)	8 ft (2.44 m)	10 ft (3.05 m)	12 ft (3.66 m)	14 ft (4.27 m)
0.40 mm	3.47 kg/m²	6.35	8.47	10.58	12.70	14.82
0.45 mm	3.86 kg/m²	7.06	9.42	11.77	14.13	16.47
0.47 mm	4.01 kg/m²	7.34	9.78	12.22	14.67	17.09
0.50 mm	4.25 kg/m²	7.78	10.37	12.96	15.56	18.14
0.55 mm	4.64 kg/m²	8.49	11.32	14.15	16.98	19.81
0.63 mm	5.27 kg/m²	9.64	12.86	16.07	19.29	22.50

Weights are for Trapezoidal profile (1000 mm effective cover). Actual weights include base metal + Z275 zinc coating + colour coating. Tolerance ±3% per IS 277.

JSW Colouron+ Hi-Rib Profile — Weight Per Sheet (kg) by Thickness and Length
Thickness	Weight/m²	6 ft (1.83 m)	8 ft (2.44 m)	10 ft (3.05 m)	12 ft (3.66 m)	14 ft (4.27 m)
0.40 mm	3.47 kg/m²	4.83	6.44	8.05	9.66	11.27
0.45 mm	3.86 kg/m²	5.37	7.16	8.96	10.74	12.53
0.47 mm	4.01 kg/m²	5.58	7.44	9.30	11.15	13.00
0.50 mm	4.25 kg/m²	5.92	7.89	9.86	11.83	13.80
0.55 mm	4.64 kg/m²	6.46	8.61	10.76	12.91	15.07
0.63 mm	5.27 kg/m²	7.33	9.78	12.22	14.67	17.11

Hi-Rib profile weights use 760 mm effective cover width. Weights include base metal + Z275 zinc + colour coating. Tolerance ±3%.

Colour Options

JSW Colouron+ is available in a range of standard colours with a PVDF (Polyvinylidene Fluoride) or polyester topcoat. PVDF coatings offer superior UV resistance and are recommended for coastal and high-humidity zones. Polyester coatings are adequate for inland and low-exposure applications.

Standard colours available from JSW distribution channels include:

Terracotta Red
Brick Red
Apple Green
Azure Blue
Charcoal Grey
Ivory White
Galvalume Silver (unpainted, metallic finish)
Mist Green

Colour availability varies by distributor and region. Confirm stock before ordering. Custom RAL colours are available for bulk orders (typically 5 MT minimum).

IS Standard Compliance

JSW Colouron+ sheets are manufactured in compliance with two Indian Standards:

IS 277:2003 — Galvanised Steel Sheets (Plain and Corrugated). Governs zinc coating weight, base metal yield strength, and dimensional tolerances. JSW Colouron+ uses Z275 grade zinc coating (minimum 275 g/m² total, both sides combined).
IS 15961:2012 — Pre-painted/Colour Coated Steel Sheets. Governs the colour coating process, adhesion, formability, reverse impact resistance, and salt spray resistance. Minimum colour coat thickness is 20 microns for the top coat and 5 microns for the primer.

According to IS 277:2003, the nominal thickness of the GI base metal does not include the zinc coating weight. A 0.47mm sheet means 0.47mm of steel; the zinc adds approximately 0.035mm on each side. Always specify base metal thickness when ordering — not total coated thickness.

JSW Colouron+ vs Standard GC Sheet — Key Differences

JSW Colouron+ vs Standard GC Sheet — Feature Comparison
Feature	JSW Colouron+	Standard GC Sheet (IS 277)
Base material	Galvanised steel (GI)	Galvanised steel (GI)
Surface finish	Colour-coated (PVDF or polyester)	Zinc only — bare metallic grey
Zinc coating	Z275 (275 g/m² both sides)	Z120 to Z275 (varies by grade)
Profiles	Trapezoidal, Hi-Rib	Standard corrugated (Sinusoidal)
Effective cover	1000 mm (Trap.) / 760 mm (Hi-Rib)	~838 mm (standard corrugated)
Expected lifespan	25–40 years (PVDF coat)	10–20 years (coastal), 15–25 years (inland)
Heat reflection	Better — lighter colours reflect solar heat	Poor — bare zinc absorbs heat
Price premium	30–50% higher per kg vs plain GC	Baseline price
IS compliance	IS 277 + IS 15961	IS 277
Best application	Residential, commercial, food-grade sheds	Industrial sheds, agricultural storage

Which Thickness to Choose

Choosing the correct JSW Colouron+ thickness depends on purlin spacing, wind load, and span. As a practical guide for Indian conditions:

0.40 mm: Light-duty applications, small sheds, purlin spacing up to 1000 mm. Not recommended for coastal or high-wind zones.
0.45 mm: Residential roofing in low-wind zones. Purlin spacing up to 1200 mm.
0.47 mm: Most popular thickness for residential and small commercial work. Good balance of price and strength. Purlin spacing up to 1500 mm.
0.50 mm: Recommended for industrial sheds and wider purlin spacing (up to 1800 mm). Better dent resistance.
0.55 mm and 0.63 mm: Heavy industrial, high wind-load areas (coastal Andhra Pradesh, Odisha, cyclone-prone zones per IS 875 Part 3). Purlin spacing up to 2000 mm.

Calculate How Many Sheets You Need

Use the Roof Sheet Calculator to get an exact sheet count for your roof — pre-set for JSW Colouron+ Trapezoidal (1000 mm effective cover) or Hi-Rib (760 mm effective cover).

Open Roof Sheet Calculator

Frequently Asked Questions

What is the effective cover width of JSW Colouron+ Trapezoidal sheet?

The effective cover width of JSW Colouron+ Trapezoidal profile is 1000 mm (1 metre) per sheet. The overall sheet width is approximately 1130 mm, but 130 mm is used for the side overlap. When calculating the number of sheets needed, always use the effective cover width (1000 mm), not the nominal width.

Is JSW Colouron+ the same as colour-coated GI sheet?

Yes — JSW Colouron+ is a colour-coated galvanised steel sheet, which is the same product category as "colour-coated GI sheet." The base is galvanised steel (GI) per IS 277, and the top and bottom are coated with paint per IS 15961. Colouron+ is JSW Steel's brand name for this product range. Other brands in the same category include TATA Durashine, Jindal Panacea, and APL Apollo Triton.

How long does JSW Colouron+ last compared to plain GC sheet?

JSW Colouron+ with PVDF colour coating typically lasts 25–40 years in normal inland conditions, versus 15–25 years for plain GC sheet (IS 277, Z275 grade). In coastal and high-humidity areas, the difference is more pronounced: Colouron+ retains its coating integrity for 20–30 years while plain GC sheet may show visible corrosion within 8–12 years without maintenance. The colour coating acts as an additional barrier on top of the zinc layer.

What is the price difference between JSW Colouron+ and plain GC sheet?

JSW Colouron+ typically costs 30–50% more per kg than plain GC sheet of the same thickness. For 0.47mm, plain GC sheet trades at approximately ₹70–80 per kg at the distributor level, while Colouron+ trades at ₹95–115 per kg depending on colour and region. However, the longer lifespan and lower maintenance cost often make Colouron+ more economical over a 20-year horizon.

Can JSW Colouron+ be used for wall cladding?

Yes. JSW Colouron+ Trapezoidal profile is widely used for wall cladding in industrial and commercial buildings. For wall cladding, the minimum recommended thickness is 0.45 mm with purlin/girt spacing up to 1500 mm. The Hi-Rib profile is generally used for roofing only due to its tile-like profile and higher rib height.

What overlap is required for JSW Colouron+ sheets?

For the Trapezoidal profile, a one-rib side overlap (approximately 130 mm) is standard. For end laps (along the slope), a minimum 150 mm overlap is required for slopes above 10°; increase to 200 mm for slopes between 5° and 10°. Always seal end laps with foam closure strips to prevent water ingress. Use JSW-approved self-drilling screws with neoprene washers for fixing — minimum 12 screws per m² for roof applications.