• Products


Sash windows

Sash (sliding sash) windows are manufactured in European redwood (pine) with hardwood sills as standard. Other types of timber used for manufacturing is oak, meranti, sapele and Accoya. The windows hardware comes from Pickard Hardware (UK), Reddiseals (UK) And Mighton Products Ltd (UK) but hardware from other suppliers can be used too upon request. Finishes comprise clear finish, stain to retain the natural wood look and any Ral, Farrow & Ball or Little green colours. As standard, the windows come double glazed with low-E glass. Other types of glazing – safety, laminated, obscured, tinted, sound-proof. If required, internal and external sills (or sill extensions) can be added.

We offer the following types of sash windows:

  • Weight-assisted (box sash)
  • Spring-assisted (also with the concealed springs)

Weight-assisted (box sash)

  • slide
  • slide


Spring assisted

Spring assisted sash windows are an attractive, appealing and practical feature that is now the usual solution for many homes, both old and new. And they cost a bit less than weight assisted sash windows. Dworks offers hidden springs option so no springs/balances are visible.


  • 145 or 155 mm frame profile
  • 50 mm sash profile
  • 20 or 24 mm units inside sash
  • Two lines of sealing gaskets
  • Two separate vertical sashes
  • Fixing of the upper sash
  • Ability to choose windows with springs or loads
  • Timber: European redwood (pine), Meranti and Sapele
  • External colour: RAL full range
  • Internal Colour: RAL full range
  • Hardware: Standard or Hidden or Security up to RC2
  • Glazing: Double
  • Acoustic Performance: 33 – 46dB
  • Thermal insulation: 1,4 W/m2k
  • Design style: SASH
  • For buildings: Domestic, Commercial
  • Quality: Premium Quality Material
  • Made in EU: Premium Manufactory Since 1992
  • Warranty: 5 years