Decra Roofing Resource Centre, over 30 year’s experience of finding the right lightweight roofing solutions

Design Considerations - Newbuild Roofing Projects

Pitch: Ensure pitch is suitable for selected Decra system.

Structure: Decra’s lightweight roofing technology dramatically reduces the dead load of the roof, compared with clay or concrete tiles. This enables faster construction and significant savings in both the size and cost of the supporting structure, releasing money that can be used to good effect elsewhere in the build.

Exposure and wind loading

The Decra Roof System is completely dry fixed and, unlike traditional tiles, places no reliance upon the deadweight of the tiles to resist wind uplift. Decra tiles are secured through their top and bottom edges into tile battens. The inherent strength of this fixing method is further enhanced by the lateral positioning of the fixings – all the loads exerted are at 90° to the plane of the fixings. In effect, to dislodge a tile wind has to shear through the coated galvanised fixing nails. Whatever the roof pitch, from 10° to 90°, Decra tiles are suitable for even the most severe exposure conditions as defined in BS 6399: Part 2: 1997, Loadings for Buildings.
Read more about Decra's outstanding weather resistance

Cut edges

Decra tiles require no further protection to the cut edge providing they are cold cut using a Decra guillotine, tin snips, reciprocating saw or nibblers. This allows a protective cathodic process to take place, effectively re-sealing the exposed cut edge with a new protective layer of zinc aluminium galvanising.
Read more about Decra's cut edge protection

Specification of works

Model NBS specification clauses are available for all Decra tile systems. They are provided:

Project specific specification

Decra has a dedicated field service, with a network of technical advisers throughout the UK & Ireland, available to provide a bespoke written specification to meet your exact project requirements.

Police Preferred Secured by Design Specifications are available for the Decra Classic Tile, Decra Stratos Tile and Decra Plus Tile with enhanced Decra security fittings.
Contact Decra's technical support team for further details

 

Secured by Design is the UK Police flagship initiative supporting the principles of

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