uPVC Rehau T-70 Casement Windows

Make the right investment for your home with lasting performance high security windows

If you’re looking for enduring quality and good looks coupled with the latest window technology, then our uPVC window systems offer everything you could ask for, combining outstanding standards in energy efficiency and performance with stunning contemporary profiles.

Modern and Traditional Styles to Suit Every Home

Our aluminium window range combines versatility with performance, offering styles that work beautifully in both period properties and contemporary builds. Whether you’re updating a Victorian terrace or designing a modern extension, aluminium frames provide the strength and flexibility to achieve your vision.

Contemporary Design Flexibility Aluminium’s strength allows larger glass panes with slimmer frames, flooding your home with natural light. Ideal for bi-fold doors, picture windows and floor-to-ceiling glazing.

Built to Last Powder-coated finishes resist weathering, corrosion and fading. Unlike timber, aluminium won’t warp, rot or need repainting—just decades of reliable performance with minimal upkeep.

Rehau Windows

We fit Rehau windows as our standard uPVC window. Better thermal efficiency (A rated) along with improved sound insulation, enhanced security and ease of use are key variables in our technically advanced uPVC windows and doors.

Our standard chamfered design gives a modern and clean look through the frame, sash and glazing bead and low line gaskets allow for slimmer sightlines and more visible glass. Our windows are available in a number of colour options that include both smooth colours and woodgrain foils.

uPVC Windows

The Rehau Total 70 is a multi-chamber system for improved thermal efficiency. This system benefits from the cleaner lines of a modern chamfered profile for the design conscious and can be perfectly matched with Rehau’s residential and patio doors, or a conservatory.

Recycling and sustainability

Optimum function and insulation values, plus the best possible use of materials, are the objectives achieved with this new system generation. The TOTAL70 system is available with a co-extruded profile made up of 75% post-consumer waste and boasts severe weather performance credentials and unparalleled technical, thermal and noise reduction efficiency.

Sculptured profile

In addition to the standard chamfered system, we can also offer our customers the sculptured system – this has a “softer” looking sculptured ovolo profile.

Just like the chamfered, the sculptured provides a unique combination of classic appearance with state-of-the-art performance.

What Colour Takes Your Fancy?

Whilst white is still a popular choice, the ever increasing range of smooth colours and woodgrain foils means that now your choice is greater than ever. Anthracite grey is a prominent colour for a contemporary look and Pearl grey and Chartwell green are popular options, particularly for older properties. 

Woodgrain foils have been around for some time, but now instead of just rosewood, white or golden oak you can opt for modern coloured foils that look like painted wood and lighter more authentic looking woodgrains, such as Irish oak, walnut or Turner oak

Find out more

Find out more about our energy efficient, high security Rehau uPVC windows in our PDF brochures.

If you’d prefer, or you’d like to match up to an earlier install, we can fit the Kömmerling range of windows and doors too.

Tried, tested and trusted

As part of Europe’s leading supplier of window and door systems, Rehau leads the market in terms of energy ratings, technical innovation and green initiatives. 

Rehau window and door systems have been tested and proven to perform in all kinds of extreme conditions and are the ultimate choice for today’s environment.

What Our Customers Are Saying About Us

4.9
(215 Ratings)
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Doreen Conteh profile pictureDoreen Conteh
18:01 12 Dec 25
I had a porch fitted and changed a ,back door and a few windows. Really pleased with the quality of the work. Excellent professional service from surveyor and office staff as well.
Richard SoundVault profile pictureRichard SoundVault
17:10 05 Dec 25
Always great service. Friendly and on time.
Harriet Low profile pictureHarriet Low
17:38 28 Nov 25
We love our new window and backdoor! It has made such a difference to our home. We always use Ruislip Doors & Windows, & they have never let us down!
Dipesh Mistry profile pictureDipesh Mistry
09:49 21 Nov 25
Great service, would recommend.

The fitters Fernando and Casio were great. Did a great job cleaning up after a quick installation.
Poonam Shah profile picturePoonam Shah
13:17 12 Nov 25
We contacted Ruislip windows and doors to fix a broken window pane at our house. They provided a competitive quote and fixed the pane within a short space of time. They were courteous and provided an excellent level of service. We will be sure to use them when needed again and recommend them to everyone.
Paula Heasman profile picturePaula Heasman
12:05 08 Nov 25
Ruislip Windows replaced my windows throughout my house. They did a fab job and worked really hard each day, not even stopping for lunch. They protected my property from any mess and we're very polite. Would definitely recommend them. Very happy with my windows!
dinesh Chotai profile picturedinesh Chotai
16:04 06 Nov 25
I have not had a chance to visit the property however my tenants are impressed by low sound levels and warmth. I asked the tenants to send me the photos of the new windows are installed. I am very happy with the service we received when me and my daughter visited their showroom/offices in watford. The service was excellent from start to finish. I will definitely use the company again and will recommend to my friends and family.
neil mccabe profile pictureneil mccabe
12:42 06 Nov 25
Pleasure to do business with. Residence R9 windows are top quality and would thoroughly recommend supply and fit by Ruislip W&D's . Fitters were also very experienced, knowledgeable and calm...
Roni Kurian profile pictureRoni Kurian
22:52 03 Nov 25
Thank you so much Ruislip Windows and Doors limited for helping me with my windows..My old windows were in real bad condition and I phoned the company and they helped with the quote and Yakub and his colleague helped to fix the new windows with perfection.. Cleared all the waste stuff from my house and I like to thank John also for the help from start to end.. Keep up the good work
Vic Daltrey profile pictureVic Daltrey
18:34 28 Oct 25
We needed our landing window replaced and Ruislip Windows did a splendid job. The leaded lights were copied and look like the originals. The chap fitting it was polite and caring and left the sight all clean and tidy.
Altogether an impressive result.
Teresa Pedro profile pictureTeresa Pedro
12:41 23 Oct 25
Quick quote, competitively priced and lead time realistic. Extremely happy with the service despite wrong type installed initially but quickly and professionally rectified. John kept me informed and Tom and Mark carried out the work.Both were Cheerful and hardworking. I will certainly recommend this company.
James Winter profile pictureJames Winter
10:25 20 Oct 25
Very painless service. Work was carried out on time and with minimal disruption. The finish is superb and the windows look great. Thank you.
Alan Evans profile pictureAlan Evans
09:47 20 Oct 25
The two man team were wonderful fitting both windows and doors. We couldn’t have been happier with their work and also the way they were in the house. We felt they went above and beyond to make sure everything was right. I would absolutely recommend this company.
Steve profile pictureSteve
14:53 28 Mar 25
We contacted Ruislip Windows about replacing our porch and was pleased to find they could fit new front, side panels and trim and use the original roof and frame. The whole process from Mark visiting to discuss what needed doing to Rob and Ryan fitting the new parts was excellent, all old parts were removed same day and everything was kept clean and tidy. Rob's eye for the finishing details was second to none.
We have used Ruislip Windows before and would recommend them to anyone that asked.
Thank you to everyone we spoke to, we are well pleased with the final item.
Steve and Jenny Welsh
Peter Jones profile picturePeter Jones
15:20 06 Dec 24
The surveyor was very helpful when he came to measure up and advised us on the types of installations available and when we could expect the installation of our doors and windows.
We received a text, within the period advised by the surveyor, asking us when would be a convenient time for the installation.
On the day of the installation the first fitter arrived early in the morning and started removing the old windows and doors. Soon after a second van arrived with the replacement doors and windows and installation commenced. The men worked non stop and completed mid-afternoon. The surrounds of doors and windows were repaired where necessary. The old fittings were removed and all the rubbish swept up and cleared away.
We were shown how the locks and the internal blinds worked.
Overall we are very satisfied with the new doors and windows and the workmanship of the fitters. We would certainly recommend Ruislip Windows and Doors Ltd to anyone.

Our 39 Year Tried & Trusted Process

We’ve been fitting windows, doors, and conservatories for nearly four decades. Our proven process delivers outstanding results time after time, giving customers excellent installations on every project.

Book an Appointment

Schedule your appointment easily by email or phone. Our friendly team will confirm your details and arrange a convenient time for your free quote.

Free Quote

One of our experts will visit your home to measure up and discuss your options. You’ll then receive a clear, no-obligation quotation.

Confirm Date

Once you’re happy to go ahead, we’ll schedule your installation for a date that suits you best, keeping you informed every step of the way.

Job Complete

Our experienced fitters complete every job to the highest standard, leaving your home tidy and your new windows, doors, or conservatory ready to enjoy.