Roof trim
Flat-lock panel system
VANKKA Flatlock
A flat plane, articulated only by its joints.
- Code
- VFL
- Fixing
- Concealed fixing
- Category
- Roofing Systems
Profile cross-section — schematic, not to scale
Overview
Flatlock removes the rib entirely. Panels interlock on all four edges and lie flat, so the surface is articulated by nothing but the joint lines between them — a quiet, precise finish for buildings where a profiled roof would be too agricultural a gesture.
The system runs on roofs and walls alike, which lets a facade fold up over an eaves line and continue across the roof plane in the same module and the same coating. Panel sizes are set out per project rather than taken from stock, and the layout can be aligned to openings and setting-out lines on the elevation.
It asks more of the substrate than a profiled sheet does — a flat panel is unforgiving of a deck that is not flat — and more of the installer. Specified and laid properly, it is the most controlled surface we make.
Applications
- Architectural roofs and facades
- Cultural and civic buildings
- Curved and faceted geometry
- Dormers, bays and detail areas
01
Continuous surface
No ribs or seams standing proud — the plane is broken only by the joint grid between panels.
02
Roof and wall in one module
The same panel and layout continue from facade to roof without a change of language.
03
Set out per project
Panel dimensions are produced to the elevation drawing, not selected from a stock size.
Technical data
Specifications
All VANKKA data is metric. Values are confirmed for your project at quotation and issued with the technical documentation.
Verified technical data for this product is being finalised. The data sheet structure below shows exactly what will be published — request the full technical documentation and our team will send the current figures for your project.
Geometry
Material
Coating
Performance
Warranty & compliance
Finishes
Coating systems and colours
Coating choice is driven by exposure and expected service life rather than by colour. Both are confirmed with your quotation.
PVDF / Fluoropolymer
PVDFMaximum colour stability.
Polyurethane
PURBuilt for the Nordic envelope.
Matt Polyester
MPLow gloss, low reflection, contemporary.
Colours available in these coating systems
Pure White
RAL 9010
Grey White
RAL 9002
Light Grey
RAL 7035
Grey Aluminium
RAL 9007
Iron Grey
RAL 7011
Graphite Grey
RAL 7024
Anthracite Grey
RAL 7016
Jet Black
RAL 9005
Light Ivory
RAL 1015
Clay Brown
RAL 8003
Copper Brown
RAL 8004
Chocolate Brown
RAL 8017
Oxide Red
RAL 3009
Brown Red
RAL 3011
Wine Red
RAL 3005
Moss Green
RAL 6005
Chrome Green
RAL 6020
Fir Green
RAL 6009
Gentian Blue
RAL 5010
Steel Blue
RAL 5011
Slate Blue
RAL 5008
Silver Metallic
RAL 9006
Graphite Metallic
RAL 9023
On-screen colours are approximations. Coated steel changes appearance with gloss level, surface texture, viewing angle and daylight. Always confirm a colour against a physical VANKKA sample before ordering.
Documentation
Everything you need to specify it.
Data sheets, installation guides, CAD details, declarations of performance and warranty terms. Documents not yet published can be requested directly and will be sent by the technical team.
- RequestTechnical data sheet
Technical data sheet
Data sheetPDF
- RequestInstallation guide
Installation guide
Installation guidePDF
- RequestCAD profile and details
CAD profile and details
CAD filesDWG / DXF
- RequestDeclaration of performance
Declaration of performance
Declaration of performancePDF
- RequestWarranty terms
Warranty terms
WarrantyPDF
Gallery
VANKKA Flatlock in use
Photography of this product in production and on completed buildings.
VANKKA Flatlock on a completed building
VANKKA Flatlock profile detail, raking light
VANKKA Flatlock in production on the roll-forming line
VANKKA Flatlock installed — junction and trim detail
Completes the system
Trims and accessories designed for this product
Ordered with the profile, these come from the same coil and the same batch — so they match exactly.
