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Home / Products / Slate Range / Westminster Slate

Westminster Slate

An elegant natural clay slate offering savings in both materials and labour. Simple and quick to install.

KEY ADVANTAGES

  • Engineered clay slate with hidden interlock
  • Tapered leading edge for an exceptionally thin appearance
  • For pitches as low as 17.5º

 

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Technical Data

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Product Data

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Full system product codes

General Information

Authority

Westminster Slates conform to BS EN 1304:2013 Clay roofing tiles and fittings - Product definitions and specifications.

Performance

Westminster Slates have been rigorously tested in the Group wind tunnel where combinations of high wind and driving rain are used to determine the tile performance with respect to wind loading and weathertightness. Tiles will meet all the requirements of BS 5534: 2014 Code of practice for slating and tiling (including shingles), providing Redland fixing recommendations are complied with. 

Fixing

Specification

FixMaster is a guaranteed tile and batten fixing specification service tailored to individual roof designs. It's Redland's high technology solution to incorrect fixing providing the most cost-effective specification to comply with British Standards. 

As no two roofs are the same, FixMaster takes into account all variable factors including roof geometry, location and products used. A full assessment is made of any nearby tall structures, natural topographical features or, in the case of airports in the locality, pressures generated by aircraft trailing wake vortices. 

Methods to obtain a FixMaster are:

  • visit the FixMaster section of this website to submit the online data sheet
  • E-mail Technical Solutions to order a data sheet
  • Telephone Customer Services on 03705 601000 to request one of Redland's Account Managers to visit you

Laying

  • Slates must be laid broken bond from right to left
  • Slates must be hung on their nibs
  • At left hand verges use LH Verge Slates and LH Half Slates in alternate courses
  • At right hand verges use standard slates and RH Half Slates in alternate courses
  • At side abutments, allow for a cover flashing and secret gutter
  • The minimum pitch is based on a maximum rafter length of 10 metres. For rafter lengths greater than this, telephone Technical Solutions on 03708 702595 for advice. The minimum pitch may also be affected by the presence of roof features such as dormers, roof windows and chimneys. For advice on the inclusion of such features in a roof slope contact Technical Solutions
  • Individual slates can be nailed, clipped or nailed & clipped
  • Although the nail holes are blind, the thin layer of material covering the nail hole can easily be broken through when driving in the nail
  • Always refer to FixMaster for a BS 5534-compliant fixing specification

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