Extreme UPVC Windows

The list of benefits Extreme UPVC windows offer is almost endless; from incredible strength and durability to lightness and versatility in design.

UPVC windows in Lincolnshire have also proven so popular because their clean, crisp lines provide styling that can effortlessly compliment the variety of housing designs found in the area. Offering unrivalled strength and resilience, these windows are renowned for their durability; making them ideal for our challenging weather. Never rotting, rusting, fading or needing repainting, Extreme UPVC windows are remarkably low maintenance; often requiring nothing more than a quick clean with a cloth to make them look brand new again.



There’s no reason for buying new windows to cause you a headache...

We dislike the idea of a customer getting overly stressed about buying new windows for their home, however, we appreciate that it’s a big responsibility, and no mistakes can afford to be made. If you’re finding it to be a difficult and complicated task, you’re certainly not alone. What you should do in these circumstances is turn to James Oliver for advice and some inspired ideas. With our team on-board, buying new windows will be nothing but simple.

Functionality - With such a wealth of window styles available at James Oliver, you may need to familiarise yourself with some of them. When trying them out in your showroom, you will come across window styles that tilt and turn, open from the side or top, or vertically slide. Operating our window styles is the best way of discovering which window style you like the most and will most appropriately serve your home.

Guarantee - Our comprehensive 10 Year Guarantee offers you complete value for money and, crucially, a lifetime of reassurance. We’re able to offer such a guarantee because our Extreme Windows are designed and manufactured to remain perfectly functional and completely fit for purpose for at least 10 years. Materials and components have been selected for their inherent durability and our manufacturing processes are second to none.

For help & advice call 01522 525926 today!

You shouldn’t have any problems buying new windows if you use the following checklist as a resource:

Aesthetics – New windows should never spoil the appearance of your house; only lift its overall aesthetics. Be mindful of the style and age of the property when assessing replacement window options at James Oliver.

Thermal Efficiency – Is the rising cost of your energy bills eating into your finances? Fitting thermally efficient double glazed windows from James Oliver will put a stop to that and help you heat your home for less.

Motivation – There may be more than one motive behind your decision to invest in new windows. If you inform James Oliver of why new windows have become a necessity, we will be able to introduce you to the most appropriate replacement window solutions.

Finishing Touches – Our windows can all be accessorised to your liking. Amongst the finishing touches we have available at James Oliver are a host of handles, hinges, locks and other window components.

For help & advice call 01522 525926 today!


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Here at James Oliver Home Improvements, we have been proudly providing local homeowners in and around the Lincolnshire and East Midlands area with quality home improvements for over 30 years. All our windows made and installed to the very highest standards, your new windows will continue to keep you warm and look great for many years to come.


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

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© 2019 James Oliver Conservatories Limited.

James Oliver Conservatories Limited of 1 Crofton Road, Allenby Trading Estate, Lincolnshire, LN3 4NL (Registered Company No.04779150) act a credit broker and is authorised and regulated by the Financial Conduct Authority. Credit provided by Hitachi Personal Finance, a trading style of Hitachi Capital (UK) PLC, authorised and regulated by the Financial Conduct Authority (Register no. 704348).