Progress Windows are Which? Trusted Trader accredited members. Which? Trusted Trader is a consumer protection company which check trades/businesses for quality, customer service and aftersales. They certify members by having a rigorous assessment process by a Which? representative. Our company has been checked to ensure that we are eligible by checking terms and conditions, dedicated customer care, credit check, past customers views and their quotations are formal and not misleading. Code of conduct (digital leaflet)

Progress Windows are registered with Certass, this means your installation will be registered and certificated confirming compliance with current building regulations as well as giving you a 10-year insurance backed guarantee and a deposit protection scheme. Certass is a Government approved Competent Person Scheme (CPS) in England and Wales and was granted its license on 6th April 2006. Only those who pass their independent assessments can register to eliminate ‘cowboys’ traders and giving you peace of mind about the company you have chosen.

TrustMark is a Government-endorsed scheme designed give confidence to homeowners when choosing a company to carry out work in or around their home.


Progress Windows are proud members of the Double Glazing Network. The Network comprises the perfect supply chain. As a result, we pride ourselves on supplying the revolutionary Liniar Window system with the maximum security locking systems from Yale – world leading locksmiths. Our high standards of workmanship and customer service are the result of Progress Windows adhering to the Double Glazing Network’s window and door installer charter.

Progress Windows are proud to be expert installers of the UPVC Liniar profile. Liniar is recognised as the most technically advanced and innovative company in the double glazing industry. They offer the perfect UPVC profile including 6 multi-chamber rather than the standard 3, integrated reinforcements for increased strength and an improved positive drainage system specifically designed to maximise natural drainage and prevent the build-up of condensation.

We are proud to be part of the Yale approved installer scheme, which means you can be confident with our installation service and aftercare. We know that you value the security of your house, and using Yale locks will give you peace of mind. After your installation, follow the simple online guarantee process on Yale’s website to be covered by their comprehensive 10-year £1000 security guarantee.

Progress Windows are Energy Saving Trust, certified manufacturers. We are members not just for the certification, but because we believe in supplying you with energy saving products to ensure a warm home for you and your family. As a result, all of our energy efficient products are endorsed by the Energy Saving Trust and are subsequently authorised to display the Energy Saving Trust Recommended logo.

Progress Windows install Pilkington glass in each of our double glazed products. If you are looking for additional privacy without losing light take a look at their obscure glass range. Focusing on the energy efficiency of glass, Pilkington aims to be the world’s leading high-performance glazing solution. Contributing to a more sustainable and green environment Pilkington have tried and tested they thermally efficient glazing systems to help contribute to a more ethically pleasing environment.