We deliver a fair, friendly and cost effective service to industry and consumers.
Membership of the Certass certification scheme is not automatic.
Member companies are assessed inline with the standards laid down in EN17065 and specific license requirements of MHCLG, TrustMark, PAS2030 or Certass.This means that Certass financially and technically assesses its members to ensure they meet required standards.
In addition to initially assessing every member each year, Certass will inspect a sample of work submitted by the member for scheme compliance. Where appropriate, Certass notifies the local authority and issues a Building Regulation Compliance Certificate to the homeowner.
Certass Certification scope for installers

> Replacement windows, doors, rooflights and roof windows to dwellings.
> Replacement windows, doors, rooflights and roof windows to non-dwellings.

> Energy efficient glazing.
> Draught proofing.

> Building Repair, Maintenance & Improvement, from multi-trade extensions to individual building fabric trade certification.
> Conservatories and Conservatory Warm Roofs.
WE ARE MULTI-AWARD WINNING SPECIALISTS IN CERTIFICATION FOR THE BUILDING INDUSTRY
Fiona was excellent, from first point of contact I felt very comfortable in communicating with her and our issue was resolved as promised. I would highly recommend Certass.
Dawn, Hanney Glazed Ltd
Great service from Certass as usual.
David Sherlock, Home Improvements
I recently had my first inspection by your surveyor Andrew Hawker, I must say how his manner and knowledge was of great help to me and my business in doing the right things that Certass requires, thank you, I am glad I choose Certass.
Phil Walter, PJ Carpenters
You guys at Certass are always helpful, polite and nothing is too much trouble - a refreshing change in this day and age.
Julie Hill, Kelvic-bec Windows
I would like to take this opportunity to offer a pat on the back to the staff at Certass, in particular Fiona - always available at the end of the phone and responsive to any queries. Many Thanks!
Baden Baden, Shipley Trade Windows Ltd
I would highly recommend Certass to any of my friends, because I believe they offer excellent service and good value for money, in these tough times. You can spread your fees monthly, which is a great help, registering jobs is easy on the web site, and when you need help or advice, they are just a phone call away.
Simon Blakemore, UPVC Installations and Joinery
After contacting one of your team with regards to the new thermal rating register I would just like to say how happy and efficient your team were with dealing with my query the girl who I spoke to was extremely helpful and I would just like to pass my thanks again.
Tracy, Quality Trade Windows
Thanks for all your help and support, you're a star!
Alex Olszak, AMP Developments
I felt compelled in writing a few words of praise for your company, Certass, and yourself. As an Energy Rated Installer AGS had the choice of three companies, including Certass, to register our Energy Rating Labels. I would like to say how pleased I am for choosing Certass. The service provided has been exemplary. I know I had a lot of questions and requirements and I am very happy in the way you dealt with them for me. I would like to commend and recommend Certass to any potential installer who is considering who to choose to register their Energy Labels with.
Andy Barnett, Director of AGS Ltd
I want to congratulate Certass on your inspector Andrew Hartker. His knowledge and advice was invaluable.He put me right on a few things regarding my paperwork which has now been changed with immediate effect. Also some advice with regards to health and safety information ie - data sheets for a first aid kit. Having had dealings with the other company (we won't mention names), I'd like to say a big thank you.
Craig Pattinson, Borough Green Plastic Surgery
Property Matters (now Pro Windows and Doors) has been a member of CERTASS since June 2009 and during the joining process and since becoming a member has never experienced anything other than first class help, advice and support from CERTASS.
Mike Edwards, Pro Windows and Doors
Joining Certass was very important to us and the outcome of our first inspection critical to our business, we were terrified of the outcome. However when Gary, the Certass Inspector Supervisor, arrived we were all instantly struck by Gary's professionalism and ability to make what for us, was a terrifying prospect as the outcome was so important, go in a relaxed, focused and informative way. I shall give a toast to you and those others at Certass who have also assisted us in this registration process along the way!!
Markyate Windows & Doors Ltd
We are delighted with the help and support that we have always received from the team at Certass and the TRR. Nothing appears to be too much trouble and our requests and queries are always responded to quickly and efficiently. There is a genuine 'feeling' that we are all working hard together, striving to ensure that our customers are getting the best possible service and product. Individual credit must also be extended to Fiona - always friendly, cheerful and helpful - willing to go that extra mile! Thank you!
Sharron Wood, Director, Goldglaze Ltd.