Weckman Progantti J is the latest masterpiece of Finnish tinsmith know-how – the most advanced interlocking roofing sheet on the market.
Innovative construction solutions make Prograntti the quietest and best ventilated roof.
Interlocking roof sheet perfected to every detail. Its unique installation system and composed elegance guarantee good results for any roof.
Available in quality class Premium 50.
The Progantti roof package is quiet.
The roof is ventilated according to regulations in all conditions.
The seam construction guarantees waterproof roofs with inclinations as low as 1:8 without additional seals.
Progantti roofing sheet made of extra strong 320 quality structural steel. Durability classification of up to 50 years.
Thanks to its perfected details, Progantti makes a beautiful roof.
The advanced interlocking structure facilitates installation.
ROOF SAFETY ACCESSORIES
The WECKMAN side fastening solution allows free thermal expansion of the roofing material and reduces wrinkling of the material and resulting noise.
The WECKMAN ventilation system ensures sufficient ventilation of the roof in Weckman’s ridge structure even in cold weather.
Moisture escapes through the ridge without condensing on the underside of the roofing, minimising the risk of damage to the underlying structures.
Progantti roofing sheet
Effective width 475 mm
Wide ridge capping L=2 m
The widest ridge capping on the market makes installation easy and gives margins.
Ridge seal L~464 mm
Improves the ventilation of the roof. Colour RR23
Gable flashing L=length of the roof (up to 10 m)
Flashing the same length as the roof (max. 10 m) in one piece without seams.
Lower eaves flashing L=2 m
Adjustable lower eaves flashing that facilitates the installation of gutters and controls the eaves line.
Mitre plate, full width L = 2 m
Full-width mitre plate that ensures waterproofness even in gently sloping Progantti roofs.
For the sealing of mitres. With adhesive surface.
Reduces noise caused by wind, quick and easy to install.
End-wall flashing to the side L=2 m
For roof-to-wall connections.
End-wall flashing L=2 m
Available pre-bent to the correct angle.
Lower flashing, galvanised L=2 m
Necessary at the eaves under the gable flashing – keeps the gable boards dry.
Drain/radon ventilation pipe
Insulated 110. Complete set, includes Progantti lead-through.
Ventilation outlet pipe
Insulated 125/160 mm. Complete set, includes Progantti lead-through.
25-70 mm, 50-100 mm, 90-150 mm, 125-200 mm
Passage size 600 x 600 mm. Includes hinges and lock.
Keeps the ventilation channels open in a ventilated ridge construction also in winter conditions.
Side fastener, galvanised
Allows free thermal movements at the edge of the roof, prevents wrinkling and noise.
Upper eaves flashing L=2 m
For pent roof ridges. Available pre-bent to the correct angle.
Hip seal flashing L = 2 m
Perforated sealing flashing that prevents snow and water from entering the underlying structures and improves ventilation. Colour RR23.
Roofing screws 4.8 x 28
For attaching the bottom edge of mitre-cut roofing sheets and flashings.
Finish your Weckman roof with an impressive and practical drainage system. Trough gutters and gutter pipes are manufactured of hot galvanised steel, which is Pural-coated on both sides. The benefits of the coating are excellent corrosion resistance, good cleanability and durable appearance. Standard colours: white, red, dark grey, dark brown and black .
Down pipe set for 3.0-metre eaves, eaves-heights of over 3 metres with extension parts.
Standard length Standard length 3.0 m, 4.0 m or 5.0 m. Outer bracket and overlap piece as standard.
P13 Trough gutter
P13 End piece
P13 Gutter bracket, short
P13 Gutter bracket, long
P13 Gutter bracket, angled (1:3; 1:2,5; 1:1,15)
P13 Overlap piece
P13 Gutter discharge
P13 Inner corner
P13 Outer corner
P10 Upper bend
P10 Lower bend
P10 Discharge pipe
P10 Downspout fastener
P13 Downspout pipe 1.0 m and 2.3 m
Wall ladders guarantee safe entry onto the roof. A roof bridge ensures a safe passage on the roof in connection with, e.g., chimney sweeping, snow dropping, antenna installations and other tasks on the roof. Snow breakers are designed to prevent damage caused by snow dropping and to protect the roof coating. All roof safety accessories are reliable and high-quality Finnish products.
Weckman ladders are made of hot galvanised oval tubes without weldings. The steps are round tubes. Wall ladders come in powder-coated or galvanised styles and roof ladders are only available powder-coated.Standard colours for roof and wall ladders: white, red, dark grey, dark brown and black.
Standard lengths 1.5m, 2.4 m, 2.7 m, 3.6 m, 4.2 m, 4.8 m, 5.1 m, 5.4 m, 6.0 m, 6.3 m and 7.2 m. The ladder set includes the ladder frame and wall mounts.
Standard lengths 1.5m, 2.4 m, 2.7 m, 3.6 m, 4.2 m, 4.8 m, 5.1 m, 5.4 m, 6.0 m, 6.3 m and 7.2 m. The ladder set includes upper arcs for the ladder frame and wall mounts (for an eaves width of 80–100 cm).
1.8 m, 2.4 m, 2.7 m, 3.0 m, 3.6m and 4.2 m. Includes the ladder frame and wall mounts.
A roof bridge can also be used for the construction of work platforms and stairs on the roof. Weckman roof bridges are safe, have a snow permeation capacity of over 50% and are classified as class 2, allowing the fastening of safety ropes. The roof bridges are powder coated. Roof profile-specific roof mounts. Standard colours: dark grey, red, dark brown, black, tile red.
Standard lengths 1.21 m (3 roof mounts), 2.47 m (3 roof mounts) and 2.97 m (4 roof mounts).
In Finnish conditions, snow breakers are necessary where people pass by.Weckman tube snow breakers are made of hot galvanised steel.The snow breaker is delivered either galvanised or powder-coated.Two oval tubes, four roof mounts according to the roof sheet.Standard colours: dark grey, red, dark brown, black, tile red.
Instructions for roof maintenance
Weckman Progantti sheets: DoP.606/13
Weckman Progantti sectional views PDF
Minimum roof inclinations
Weckman drainage systems and roof safety accessories, installation instructions
Weckman Progantti installation video
Weckman Progantti sheets, installation instructions