Green Building Store’s PERFORMANCE, ULTRA and MOCK SLIDING SASH timber window and door ranges offer the following Warranties*:

  • Green Building Store ULTRA triple glazed timber window outward opening casement with Passivhaus certified optionFrames: 10 years
  • Glazing: 10 years
  • Hardware: up to 10 years
  • Finishes: Paint (10 years) & Stains (6 years)

*Subject to terms and conditions

Warranties information

Maintenance information

Please ask us about Warranties for our PROGRESSION range.

NB Special warranties exist for properties in coastal areas. Please contact us for more information.

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