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Weckman W-20R corrugated metal roofing sheet

Weckman W-20R/1100 is the most popular roofing sheet in our corrugated sheet family. It is a cost-effective and reliable choice for metal roofing. W-20R/1100 is also available with Weckman anti-condensation coating.

Available in Premium 50, Standard 40, and Economy 30 quality grades, as well as galvanized.

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Additional information
Nominal coverage width (mm)

1100

Total width (mm)

~1135

Minimum length (mm)

400

Maximum length (mm)

~13000

Profile height (mm)

20

Material

0.45 mm structural steel, 0.5 mm structural steel, 0.6 mm structural steel, 0.7 mm structural steel

Steel Grade

DX51D+Z (0.45 mm);
S280GD+Z (0.45–0.5 mm);
S320GD+Z (0.6 mm); S350GD+Z (0.7 mm)

Fire classification

BROOF (Finnish Building Code E1)

Purlin spacing (mm)

300–1200

Kattolevyjen pinnoite

Anti-condensation, Economy 30, Galvanized, Premium 50, Standard 40

Minimum roof pitch

1:7

Pellin väri

RR11 Spruce Green, RR20 White, RR21 Light Gray, RR23 Dark Grey, RR24 Light Yellow, RR29 Red, RR2H3 Anthracite, RR32 Dark Brown, RR33 Black, RR35 Blue, RR37 Green, RR40 Silver, RR750 Brick Red

Additional information

Halls for agriculture, industry, and business operations

Benefits and advantages of Weckman steel halls

  • Durable The safety of Weckman halls is based on Weckman's decades of experience in building for Finland's demanding, snowy conditions. The design of the halls is always based on a 50-year lifecycle approach.
  • Versatile Practical, modern, functional, and spacious facilities for agricultural and industrial storage and production halls.
  • Fast delivery, fast installation Weckman standard hall range for efficient construction. The most popular halls have been created as a standard range of stock products for fast and cost-effective construction.

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Basic Package

  • Roofing Sheet
  • Ridge Flashing, Smooth
  • Gable Flashing 160 mm
  • Screws 4.8 x 28 mm
  • Ridge Seal

Accessory Package

  • Ridge Ventilation Piece
  • Eaves Flashing
  • Roof Safety Products
  • Rainwater System

Weckman Anti-Condensation Coating

The WECKMAN anti-condensation coating provides effective protection against moisture forming on the underside of the roofing sheet; a separate underlay may not be necessary. Compared to standard anti-condensation sprays, our coating offers top-class absorption capacity: up to 900 g/m² (water) on a horizontal surface. The coating is available for the W-20R, W-45ER, and W-45JR products.

Weckman Light Panels

Light panels are available for the W-20R/1100 profile, made from fibreglass-reinforced, semi-transparent polyester (light transmission approx. 80%).
Standard length 2900 mm. Raw material thickness approx. 1 mm.

W-20R advantages

Environmentally friendly

Manufactured from 100% recyclable steel.

Durable

Long-lasting hot-dip galvanized or paint-coated steel. Up to 50-year quality rating.

Wide Selection

Multiple profile, color, and coating options as well as material thicknesses.

Affordable

Durable, easy to maintain, and long-lasting.

Technical Information and Roof Accessories

Weckman Corrugated Roofing Installation Accessories

Guaranteed durable and safe quality

Complete your Weckman roof with an attractive and functional rainwater system. Gutters and downpipes are made from hot-dip galvanized steel coated with Pural on both sides. The benefits of this coating include excellent corrosion resistance, easy cleaning, and long-lasting appearance. Standard colors: white, red, dark gray, dark brown, and black.

DIMENSIONS

Downpipe

Downpipe set for 3.0 m eaves; eave heights over 3 m with extension pieces.

Gutter

Standard length

Standard length 3.0 m, 4.0 m, or 5.0 m. External bracket and gutter connector included as standard.

Durable and safe Weckman roof safety products

Wall ladders ensure safe access to the roof. Roof walkways, in turn, guarantee a safe path on the roof for chimney sweeping, snow removal, antenna installations, and other maintenance tasks. Snow guards are designed to prevent damage caused by falling snow and to protect the roof coating. All roof safety products represent reliable, high-quality Finnish craftsmanship.

Ladders

Weckman ladders are manufactured from hot-dip galvanized oval tubing without welds. The rungs are made of round tubing. Wall ladders are available either powder-coated or galvanized, and roof ladders are powder-coated. Standard colors for roof and wall ladders: white, red, dark gray, dark brown, and black.

ROOF LADDER

Standard lengths: 1.2 m, 2.7 m, 3.3 m, 4.2 m, 4.5 m, 5.4 m, 6 m, 6.6 m, 7.5 m, and 8.4 m. The ladder set includes the ladder frame and roof fasteners.

WALL LADDER

Standard lengths: 1.2 m, 2.7 m, 3.3 m, 4.2 m, 4.5 m, 5.4 m, 6 m, 6.6 m, 7.5 m, and 8.4 m. The ladder set includes the ladder frame, handrails, and wall fasteners (for eaves widths of 85–100 cm).

EMERGENCY LADDER

1.2 m, 2.7 m, 3.3 m, 4.2 m, 4.5 m, 5.4 m, 6 m, 6.6 m, 7.5 m, and 8.4 m. Includes the ladder frame and wall fasteners.

Roof walkway

Roof walkways can also be used to build work platforms and steps on the roof. The Weckman roof walkway is safe, with snow permeability exceeding 50%, and is Class 2 rated, allowing for the attachment of a safety rope. Roof walkways are powder-coated. Roof-profile-specific fasteners. Standard colors: dark gray, red, dark brown, black, and brick red.

ROOF WALKWAY

Standard lengths: 1.21 m (3 roof fasteners), 2.47 m (3 roof fasteners), and 2.97 m (4 roof fasteners).

Snow guard

A snow guard is an essential product in Finnish conditions above walkways. The Weckman tubular snow guard is manufactured from hot-dip galvanized steel. The snow guard is delivered either galvanized or powder-coated. Two oval tubes, four roof fasteners according to the roof sheet type. Standard colors: dark gray, red, dark brown, black, and brick red.

SNOW GUARD

3,000 mm

Weckman quality is ensured by manufacturing in accordance with the ISO9001 quality system. You can also recognize Weckman quality from the CE marking, as all our steel products meet the requirements of standards SFS-EN 14783:2006 and SFS-EN 1090-1:2009+A1:2011. Every one of our employees has internalized our goal of maintaining high-quality, error-free workmanship.

Weckman Premium 50

Weckman Standard 40

Weckman Economy 30

Interested?

Ask an expert for more information or request a quote

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