Logik Bay Windows

PVC-U Eurologik system. High performance and classic looks.

The Eurologik profile system combines leading energy efficiency performance and aesthetics with ease of use, for the ultimate system. Eurologik is specially designed for ease and speed of fabrication and fitting, featuring a unique, patented knock-in bead system. Ideally suited for new build or replacement windows, its 70mm front-to-back dimension enables the seamless replacement of timber frames.

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High performance and classic looks

Eurologik is designed for improved aesthetics and clean sight lines, with its unobtrusive gasket line and slim profile. The profile features multiple chambers to enhance thermal efficiency and strength, and improve drainage. Available with chamfered or sculptured ovolo styles in a range of colours, Eurologik window profiles add a touch of distinction to any home.

Design Features

  • Outstanding technical performance
  • Fast, accurate fabrication and installation
  • Superb energy efficiency performance
  • U-values as low as 0.8
  • BBA certified system
  • Market-leading sustainability
  • Wide range of colour and style options
  • 10-year guarantee for peace of mind


  • Chamfered or Ovolo
  • 12 frame colours
  • A range of window styles
  • System accepts both 28mm and 36mm-thick glazing
  • Secure by design
  • British Standards Institute (BSI)
  • British Board of Agrément (BBA)


Thermalogik outer frame (EWS 7001) with sash T (EWS 7005) 97mm
Main frame (EWS 7021) with sash T (EWS 7005) 107mm
Large main frame (EWS 7006) with sash T (EWS 7005) 122mm
Sash T (EWS 7005) with transom Z (EWS 7003) 117mm
Sash T (EWS 7005) with intermediate transom Z (EWS 7023) 132mm
Thermalogik outer frame (EWS 7001) 50mm
Main frame (EWS 7021) 60mm
Large main frame (EWS 7006) 75mm

Technical Features

  • Full depth eurogroove for maximum hardware compatibility
  • Soft line bevel feature is matched by the bead
  • Single hinge and espagnollette location in sashes for ease of fabrication
  • PCE gaskets offer market leading adhesion, air tightness and weather peformance
  • Unique patented knock-in bead system available with 28mm and 36mm putty line
  • Assessment report numbers 2480 (chamfered) and 2663 (ovolo)

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