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Our Certifications and Memberships


Fensa is a well-known UK organisation, specialising in the assessment and examination of window installations and installers. Our projects are regularly inspected by this 3rd party, and our installers are re-assessed frequently. The ultimate aim is to give customers peace of mind: knowing that a window installation team are competent at their job, as well as checking that products are up to standard and that we as a company have all required documentation in place.


Another premium-quality Danish manufacturer, STM stands out for their finishing quality. Their timber paint finish goes beyond industry standard, and they guarantee the use of knot-free timber heartwood.
Not only do STM offer timber-only and composite windows, they can also provide an oak solution for a truly traditional product. To see our distributor certificate, click here.


If you require a bespoke timber window with that little bit extra, Danish company Vrogum is one of our main recommendations.
Offering timber products in a wide range of shapes and sizes, Vrogum are the only people we will recommend for timber sliding sashes.
Indeed, Vrogum’s Svarre division offers something truly unique. For an ultra-modern building, look no further than their windows which feature a flush all-glass exterior. Click here to view our distributor certificate.


Checkatrade runs strict background checks on tradespeople before they can become members. Once they join, members agree to have feedback from their customers published online for all to see. Find our Checkatrade membership certificate here.

Which? Trusted Traders

Which? allows consumers to access more than 8,000 impartial, in-depth, product reviews to help them find the best option for themselves. Find our Which Trusted Traders membership certificate here.