Castle Windows is one of Newbury's largest independent suppliers of double glazed doors and windows, roofline products and conservatories.
Castle Windows prides itself on a reputation built on quality products, installed by competent installers, managed by a helpful and organised office staff.
Castle Windows has been growing at a rate of approximately 1000 customers per year for 18 years (Registered 1990).

Castle Windows has completed over 25,000 installations and is increasing daily.

Please view our testimonials to get some feedback from our valued customers

• Over 18 Years Running
• Excellent Reputation
• Affordable Prices
• Superb Range of Products
• Vastly Experienced Fitters

Castle Windows is a member of FENSA. FENSA Limited is the Fenestration Self-Assessment Scheme for companies that install windows and doors in homes

We are also a registered installer of Pilkington and Pilkington EnergiKare.

We're also a part of the Federation of Master Builders and European Building Confederation. All uPVC extrusions are manufactured to the existing standards of BS7413 and the suite holds KM12894, PAS011 and KM33502.