TIMBERWELD® is a patented method of fusion welding two sections together but hiding the welded seam behind a vertical butt joint.  The appearance is the same as you'll see on original timber sash windows, vertical joints, just like timber.  Masterame has the exclusive license to manufacture sash windows using this method and all trade ranges now come standard with this technology.


The advantages

  • Beautiful and authentic looking every bit like a timber original joint
  • Looks as if it has been produced by a master craftsman
  • Most butt joints in the market today are open ended but Timberweld® joints are completely sealed from the elements.
  • No open chambers to allow in rain water, draughts, bugs and flies
  • Timberweld® joints blend in with all architectural styles
  • Suitable for use in Conservation Areas and in the most contemporary of developments
  • Masterframe has the sole licenses to produce sash windows with Timberweld® technology
  • Masterframe sash windows with Timberweld® will be the perfect match for casement windows and doors offered with Timberweld®

Timberweld® as part of standard specification

  • The Authentic Collection
  • The Heritage Collection
  • The Vintage Collection



  • BBA
  • energy saving recommended
  • SBD
  • CE
  • URS
  • TGO

Learn why you get better windows because of these

  • BBA logo
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  • Secured by design logo grey
  • BFRC logo grey
  • Energy Trust logo Grey
<h3>Setting standards, safeguarding interests</h3>
<p>Masterframe have been GGF members since the mid 90s. Our MD has served on the GGF main board and chaired the Home Improvement Executive, FENSA and the BFRC. Membership gives you greater protection on a number of levels.</p>
  • DGC logo grey
  • CE logo grey
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