UPVC Extreme Windows

An Extreme UPVC window is an upgrade on your standard UPVC replacement window…

Householders demand more from their windows than they used to. They need windows that make them feel really secure and keep the cost of their energy bills right down. UPVC Extreme windows outrank normal UPVC windows for security and thermal efficiency by a considerable margin. Supplied in a double or triple glazed unit, our Extreme range promises to put your home out of the clutches of burglars and save you a fortune on heating costs. An Extreme window can be crafted to complement all properties.

Being a well-established window supplier, Speedy Home Improvements can offer insightful window buying advice...

Is there a specific reason you want new windows for your home or do you have a series of objectives? Tell us what these reasons or objectives are so that we can suggest the most appropriate solutions. In the main, people want replacement windows to eliminate draughts and cut the cost of their energy bills. They may also have had enough of continuously maintaining their windows. Our window consultants are vastly experienced, so they’re brilliantly placed to listen to your needs and provide ideas to help you make the right choices.

Functionality – The easiest way to discover which window style is the best option is to have a play with the many window styles we have. You can do that in our showroom. We have windows that you can open from the side or top, and others that you either vertically slide open or tilt outwards. Ask for a product demonstration from one of our window advisors to watch our windows in action.

Guarantee – When you purchase your new windows from Speedy Home Improvements, you will receive a 10 year guarantee with them. We have carried out every possible test on our windows to make absolutely sure that they will last for 10 years minimum. The guarantee provides you with cover should you ever experience any problems with your windows inside that 10-year period.

For help & advice call 01903 231000 today!

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Our friendly team will be pleased to help with any questions you may have.


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Credit is subject to status and affordability. Terms & Conditions Apply. Speedy Build Ltd FRN: Registered Address: 38 Salisbury Road, Worthing, West Sussex, BN11 1RD. Registered No. 10670175 & VAT No. 311 6048 44 trading as Speedy Home Improvements is a credit broker, not the lender and is authorised and regulated by the Financial Conduct Authority. Credit is provided by Novuna Personal Finance, a trading style of Mitsubishi HC Capital UK PLC. Authorised and Regulated by the Financial Conduct Authority (Register no. 704348)