Firmfix’s Efficiency Range of double-glazed windows are installed meticulously, adhering to the exacting British Standards. We’re proud to uphold the BSi Kitemark KM 522649 (BS8213-4: 2007), a testament to our commitment to superior survey and installation practices. Regularly inspected by BSI, we ensure our window and door installations consistently uphold the stringent standards of workmanship and quality.
By opting for Firmfix, a local Tewkesbury company, for your double glazing needs, you’re securing unwavering quality, expertly installed, every time.
Our dedication to excellence is further underscored by our ISO 9001-2015 accreditation, emphasizing our commitment to outstanding manufacturing processes. Coupled with the Secure by Design accreditation for our robust locking systems, you’re ensured unparalleled security and peace of mind.
As an accredited and checked member of Checkatrade and a founding member of the DGCOS, our credentials stand as a testament to our promise of superior quality and reliable service.
We provide an array of windows to suit every budget, including our exceptional Duraflex and Trade counter ranges. To learn more about these and other offerings, visit our Range Explanation.
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