Which? Trusted Traders is working with Certass to help window installers stand out from the crowd and help consumers to find the right trader for them.

Members of Certass, a competent persons scheme for glazing, can apply to join Which? Trusted Traders and take advantage of a special offer, giving them 50% off their membership fees for the first six months.

Please note that Which? Trusted Traders are in partnership with CERTASS and they do not hold an endorsement from Which?. All members of CERTASS must apply and pass our assessment process before becoming a Which? Trusted Trader. 

But those that make the grade will be able to use our endorsement logo, helping them to  stand out from the crowd, and giving customers confidence when looking for someone to work on their home.

If you’re a Certass member, apply now to become a Which? Trusted Trader.

“The Certass and Which? schemes are perfectly aligned”

Jon Vanstone, Chair of Certass said, ‘Certass is pleased to announce its new partnership with leading consumer brand, Which? Trusted Traders.

‘Championing and supporting local traders who work in line with current building regulations is at the heart of Certass, and through this new partnership with Which? Trusted Traders, we can work together to educate consumers on what they can expect from a quality installer. 

‘The Certass and Which? schemes are perfectly aligned – Certass ensures that businesses are competent to deliver the work they do for homeowners and the Which? scheme is focussed on protecting consumers when they choose a trader.

‘It will be an ongoing partnership to promote Certass best-practice installers to the Which? Trusted Traders audience, and Certass members can get a 50% discount on a Which? Trusted Traders membership for the next 6 months*.’

Poppy Hynam, Which? Trusted Traders Partnership Manager, said: 'Which? Trusted Traders is delighted to announce a new partnership with Certass to help traders get more recognition in the market. While Certass demonstrates you’re competent to carry out the work you do, an endorsement from Which? Trusted Traders helps demonstrate that you're there for the customer and have been verified by the UK’s no1 consumer organisation. 

‘This is the first step towards raising standards in the glazing industry and highlighting only the most reputable installers to customers. We are pleased to be playing a key part in encouraging high standards and reducing consumer detriment.'

If you’re a Certass member, request a call back from the team or apply now to become a Which? Trusted Trader and get 50% off for the first 6 months. 

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