The appearance and scale, of the EQC Seamlock standing-seam profile is ideal for houses, apartments, public and commercial buildings, schools, and sports facilities. Its inherent light weight and strength make it ideal for new build, refurbishment, and over roofing applications.

EQC Seamlock is manufactured from a choice of materials – 0.7mm Colorcoat® pre-finished steel or 0.9mm coated aluminium. Colorcoat HPS200 Ultra® and Colorcoat® LG pre-finished steel by Tata Steel, available in a choice of colours, offers interesting visual alternatives to traditional copper and lead standing seam roof systems. Colours include naturally inspired blends, sympathetic to the urban landscape, ensuring harmonious integration with the surrounding environment.

The preferred coating for the aluminium material is PVDF, (polyvinylidene fluoride). These coatings were developed over 30 years ago, the surface finish is smooth with a decorative finish. It is very durable, giving excellent flexibility and chemical resistance combined with the highest possible performance regarding gloss retention, chalking and colour change. An Organic Patina finish utilising a low gloss dull lacquer is also available.

SeamlockZinc features zinc particles incorporated into a durable coating which is specifically designed as an aesthetic option to naturally weather in a similar way to zinc, rather than retaining a fixed colour. The prevailing conditions of the installed location will influence this and produce different rates of tonal change delivering the aesthetic benefits of a “live” material. The advance coating system is applied over an aluminium substrate which provides a lightweight, durable and cost effective alternative to traditional zinc.


The EQC Seamlock system provides an original and modern roofline for any property and may be laid on low-pitched or curved roofs, both concave and convex.

  • Available in 454mm pan cover width, as standard.
  • Class AA (roof) and Class O (wall) Fire Performance rating
  • CE Marked to BS EN 14783:2013
  • When installed as wall cladding, can be laid vertically or horizontally.



The cold roof system has been specifically designed for use on traditional pitched roofs and is suitable for use with the kind of timber frame that is used in the majority of homes and many large buildings.


The warm roof system embraces the fundamentals of modern metal roofing with inherent thermal performance provided by RocSlab mineral wool insulation, whilst the outer sheet provides the look of a traditional pitched roof.


EQC also offer the option of Seamlap in Colorcoat® prefinished steel by Tata Steel. Seamlap sheeting may only be laid in straight sheets and on cold-roof application. Seamlap features a snap-fit side lap joint and simpler fixing arrangement. Seamlap has a pan width of 500mm.

EQC Seamlock roof systems are backed by EQC`s technical support team. Comprehensive specifications and application details (both dwg  and pdf format) are available together with design advice on thermal and acoustic insulation.



Download SeamlockZinc Data Sheet SeamlockZinc Data Sheet Download Seamlap Data Sheet Seamlap Data Sheet Download Seamlock Projects Seamlock Projects
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