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Traditional Textures Snaplock® Seam

The Snaplock® seam system is extensively used in Europe and the United States of America, where the system has proved itself in the extremely varied climate. The system gives an aesthetically pleasing finish whilst avoiding the industrial finishes found in other seam systems.

Features and benefits:

  • Manufactured from lightweight corrosion resistant aluminium.
  • Seams are available in 25 or 38 mm formats, in recoated aluminium which captures the colour pigments and textures of real zinc and copper cladding. It has a long life, is lightweight, is easy to work and is eco-friendly.
  • The Snaplock® seam system can be laid on a ventilated timber substrate, composite panel or direct on insulation, using special warm roof fixing clips.
  • Snaplock® is much simpler and requires less skill/ hand tools than the traditional standing seam. The profile contains an undercloak and an overcloak – the undercloak side is fixed with a stainless steel fixing clip with the overcloak side then snapped into place.
  • The system can be provided as a complete roof kit including all flashing, matching rainwater products and ancillaries.


Snaplock® can be mounted on all roof build-ups, the only pre-requisite being that it is fully supported.

Suitable substructure materials:

  • Ventilated 18 mm-thick weather and boil proof (WPB) plywood.
  • Ventilated oriented strand board OSB3.
  • Hard metal board.
  • Composite panel.
  • Rigid insulation.


ISO-Mat Pro® underlay is recommended by the manufacturer.


  • 25 mm seam: SM-EH-Snap-25 (SM-EDH-Snap-25 for fixing to rigid insulation).
  • 38 mm seam: SM-EH-Snap-38 (SM-EDH-Snap-38 for fixing to rigid insulation).
  • Flashing clips: SM-ELH-27.

General information


Uniclass 2015
Pr_25_71_51_02 Aluminium long stripsPrimary

H72/110 Aluminium sheet fully supported roof covering

H72/130 Aluminium sheet fully supported wall covering

H72/2 Aluminium sheet fully supported roof covering

Specification data - Aluminium long strips
Product Reference

Traditional Textures Snaplock® Seam


Insert project requirements, maximum 12 m.


25 mm

Minimum pitch: 7°. Nominal centres: 425 mm.

38 mm

Minimum pitch: 3°. Nominal centres: 386 mm.


0.7 mm

0.8 mm


Blue Zinc Patina

Copper Metallic

Copper Oxide

Copper Patina


Dark Zinc Patina

Graphite Patina

Green Zinc Patina

Inca Gold

Red Zinc Patina

Zinc Patina

RAL 7016, Anthracite grey

RAL, other

Insert requirements.

Standard product features



Technical characteristics:

  • Coating thickness: 50 µm (three coats).
  • Durability class to NF EN 1396: Class 4.
  • Fire rating to EN 13501: A1.
  • Resistance to cracking on rapid deformation to EN 13523-5 and ASTM D 2749: No cracking, no loss of adhesion.
  • Resistance to cracking on bending to EN 13523-7 and ASTM D 870: Very good flexibility (0.5T).
  • Water immersion (and humidity) resistance to EN 13523-9/ 25 and ASTM D 870/ 2247: 3,000 h.

Product Options


Alternative (bespoke) lengths are available, if they are logistically possible to transport. Consult manufacturer for details.


The precoated aluminium is also available in any RAL colour as well as many other specialist finishes. Consult manufacturer for details.

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