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About Us

A Family Business

Mark has run Primefit Windows' for 28 years and has been in the industry for 42 years. Mark prides his business on an excellent reputation built on quality products and installed by competent installers.


Over 5,250 Installations

The company has successfully completed over 5,820 PVCU and aluminium double glazed window, door and conservatory installations with most of the work coming from recommendations from very happy customers. We are located between Didcot and Wallingford and install in many surrounding Oxfordshire towns, villages and rural areas.

Primefit Windows are registered with FENSA. The Federation Self Assessment Scheme for companies that install windows & doors into homes.


Our Product Range

The product range covers all types of double glazed Windows, Doors, French Doors, Patio Doors, Bi-Fold Doors, Composite Doors, Porches and Conservatories. Along with building work, roofline products, facias, soffits guttering and cladding.

Available in uPVC and Aluminium we have an excellent relationship with our suppliers so we can meet our customers needs.

Primefit Windows offer high quality products at the right price and support their work with a 10 year guarantee and back up service. We are financially secure and have never traded under other names or gone into receivership which is key to honouring guarantees on our products and installations.

Mark Bradley has years of experience in helping you choose the right products for your home. As a company we work with our manufacturers to be innovative in new product development and offer first class customer service. We offer free flexible appointments to suit you and with no pressure sales.