All installers are not the same
01325 720 000
Hurworth Grange, 41 Hurworth Road, Hurworth Place, Darlington, DL2 2BN

Super Fortress™ 70


If your looking for acclaimed hi-tech windows that will last for many years before they need to be replaced and add real value to your home, the Super Fortress™ 70 windows are for you. The windows embrace modern styles whilst showcasing the highest engineering standards and offering the best standards of security. 

The windows can make your home comfortable whilst slashing your energy bills and giving your property a whole new lease of life. They feature a fully-contoured outer frame, sash and glazing bed alongside low sightline grey weather seals and a multi-chambered construction. If you're looking for windows that form a robust barrier against the most challenging of British climates whilst enhancing heat and noise insulation, Super Fortress™ 70 windows are for you. 

You can talk to our friendly, expert team at any time if you have any queries about our products. We can help you to come to an informed choice whilst helping you save money on some of the most acclaimed windows around. More and more north east homeowners are choosing us over the competition all the time due to our expertise, skill and low prices. 

If you live in the north east and are interested in obtaining state-of-the-art Super Fortress™ 70 windows, simply get in touch with our team today to learn more using the contact details in the top right hand corner of the site. 


Checkatrade information for Oaktree Windows Ltd

2017 (3)

2016 (1)

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Customer Testimonials

Thanks to everyone for a great job. We're delighted.”

Mr. & Mrs. Booth

Competitive price excellent product and workmanship. Company boss involved from start to finish. Highly recommended.”

Mr Hunter

New windows, conservatory roof, new utility "Reliable, clean, quick and excellent follow up service"”

Mrs Davies

"Front door designed to my requirements and fitted. Excellent from the initial quotation and design to the fitting, fabulous friendly service, very professional company"”

Mrs Crawford - Stockton on Tees

I would very much appreciate it if you could pass on my thanks to everyone, from Neville in the 1st instance for his advice, guidance and expertise to the fitters who were amazing. The windows look fabulous, the patio doors look fantastic and the bi-fold doors are stunning. Great job from start to finish, thank you.”

Miss J. Lowes

Great windows for a sensible price clean workers recommend anytime”

Mr M. Young - Eaglescliffe

Fantastic job, work is super a really good job.”

B Hope Chester-le-Street

Great job from start to finish, fitters are a credit to the company. They even had there own hoover to clean up after! ”

Mr.G.Hall - Darlington

Good professional job! The windows look great”

Mr R. Evans

Fantastic windows and service, I highly recommend Oaktree for your replacement windows, Doors and conservatories.”

Mr N. Campelle

Such a pleasant building experience. The workmen were very efficient, polite and hard working. My windows look fantastic.”

Mr C. Eastwood - Newcastle Upon Tyne