Weckman W-20R
corrugated sheet for roofing

Weckman W-20R
Reliable favorite as roofing sheet

Weckman W-20R/1100 is the most popular roofing sheet in our corrugated sheet family.
It is an affordable and reliable option for roof construction. W-20R/1100 is also available with Weckman anti-condensation coating.

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

Pine Green RR11, Pebble Gray RR21, Mountain Gray RR23, Cottage Red RR29, Walnut Brown RR32, Nordic Night Black RR33, Tile Red RR750.

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 W-20R technical specifications

Weckman W-20R

Nominal effective width1,100 mm
Profile height20 mm
Maximum length~8,000 mm
Minimum length400 mm
Minimum recommended roof pitch1:7
Raw material0.45–0.7 mm
ApplicationsRoofing
Batten spacing300–1,200 mm
Steel gradeDX51D+Z (0.45 mm); S320GD+Z (0.5 mm); S320GD+Z (0.6 mm); S350GD+Z (0.7 mm)
Fire classBROOF (RakMk E1)
Quality systemISO-9001
Total width~1,135 mm
Dimensions according to SFS-EN 508-1 tolerances

BASIC PACKAGE

  • Roofing sheet
  • Ridge flashing, smooth
  • Barge flashing 160 mm
  • Screws 4.8 x 28 mm
  • Ridge filler

ACCESSORY PACKAGE

  • Ridge ventilation piece
  • Eaves flashing
  • Roof safety products
  • Rainwater system

Weckman anti-condensation coating

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 conventional anti-condensation sprays, our coating offers top-class absorption: up to 900 g/m² (water) on horizontal surfaces. You can choose the coating for W-20R, W-45ER, and W-45JR products.

Weckman translucent sheets

Translucent sheets are available for the W-20R/1100 profile, made from fiberglass-reinforced semi-clear polyester (light transmission approx. 80%).
Standard length 2,900 mm. Raw material thickness approx. 1 mm.

Weckman Corrugated Roofing Installation Accessories

Roofing Sheet

Profiled Ridge Flashing L=1.93 m

For tile-pattern roofs. Recommended for roof pitches shallower than 1:2.

Smooth Ridge Flashing L=2 m

For corrugated roofs. For all roof pitches.

Gable Flashing L=2 m

Junction Flashing L=2 m

Available pre-bent to right angle.

Eaves Flashing L=2 m

Underlayment Flashing L=2 m

Essential for eaves flashing under the gable trim - prevents fascia boards from getting wet. Profile-specific.

Barge Board, Full Width L=2 m

Roof Hatch

Access opening size 600 x 600 mm. Includes hinges and lock.

Penetration Pipe Base Plate L=1 m

For corrugated roofs. Used together with insulated penetration pipes.

Hip End Cap

With profiled ridge flashing.

Sewer Ventilation Pipe

Insulated 110. Complete set, includes roof penetration and for corrugated roofs also base plate (no. 10).

Ventilation Exhaust Pipe

Insulated 125/160 mm. Complete package, also includes roof penetration and for corrugated roofs also base plate (no. 10).

Ventilation Cap

For profiled and smooth ridge flashing.

Y-Piece

With profiled ridge flashing.

T-Piece

With profiled ridge flashing.

Penetration Boot

25–70 mm, 50–100 mm, 90–150 mm, 125–200 mm

Profiled Ridge Flashing End Cap

Seals

Suitable seals are available for all Weckman profiles. Sealing tape 3 x 10 mm for side and longitudinal laps. Sealing mat for use with profiled ridge flashing at ridge and hip.

Roofing Screws 4.8 x 28

Roofing screws with sealing washers supplied galvanized and in standard colors.

Touch-Up Paint

25 ml, standard colors

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.

P13 Gutter

P13 End cap

P13 Gutter bracket, short

P13 Gutter bracket, long

P13 Gutter bracket, angled (1:3; 1:2.5; 1:1.15)

P13 Connector

P13 Outlet

P13 Internal corner

P13 External corner

P10 Upper bend

P10 Lower bend

P10 Discharge pipe

P10 Downpipe bracket

P10 Offset

P13 Downpipe 1.0 m and 2.3 m

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 according to the ISO9001 quality management system. You can also recognize Weckman quality by 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 keeping the quality of work high and error-free.

Weckman Premium 50

Weckman Standard 40

Weckman Economy 30