Bespoke & Custom Made

Our windows and doors are all custom-made to your exact requirements. Additionally, they are available in a range of versatile design options.

Construction Background

With over four decades of experience in construction, our founder Mick Haren and our team ensure flawless installations for your peace of mind.

Thermally Efficient

Designed with performance in mind, our windows and doors offer exceptional thermal efficiency ensuring they meet even the new stringent building regulations.

Fixing uPVC window

Experts That You Can Rely On

At Sandymount, we offer a variety of high-quality products including uPVC and aluminium windows, composite doors, French doors, bifold doors, and many more. Our home improvement products are designed to enhance the look of traditional and period properties, making them an ideal addition to any property or project.

Why choose us?

At Sandymount, we pride ourselves on offering exceptional service and high quality products that withstand the test of time. Here are just a few reasons as to why we’re the number one choice for your home improvement needs:

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Quality Service

At Sandymount, all of our building and fitting is done in-house to ensure that product quality and customer satisfaction is high.

Accredited Experts

Our commitment to completing all installations to the highest standards is backed by our FENSA, BRFC, and CHAS accreditations.

Bespoke Installations

At Sandymount, all of our installations are available in a range of bespoke design options, enabling you to find the ideal match for your property or project.

Long Lasting Warranties

Our products all come with long lasting guarantees. As part of our aftersales service, we also offer in-warranty repairs.

Areas we serve

What areas do we serve?

We are a leading provider of quality home improvement products in North Wiltshire and the surrounding areas including Oxfordshire, Gloucester and the outskirts of Bristol. However, we can travel further depending on what work is required. We also have a showroom in our Cirencester office, where you can browse our extensive product range for yourself.

High performance home improvement products from Sandymount

At Sandymount, we take pride in offering high-quality windows and doors that are designed to enhance the performance, security, and aesthetics of your home. Our products are completely customised to your specific requirements, ensuring a perfect fit for any property or project. To find the perfect fit for your needs, please don’t hesitate to get in touch with our team.

Exterior view of a home with Origin aluminium bifold doors opening to a patio, showcasing a seamless connection to the outdoors, ideal for homes in {location}.
Origin Premium Partner 2024

Accredited Origin Installer

We are proud partners of award-winning manufacturer Origin, meaning we can offer you a range of aluminium bi-fold, sliding and front doors, along with high-quality aluminium windows. Our team has completed Origin’s product knowledge and installation training, meaning you’re in safe hands when you choose Origin products for your next home improvement project.

View Our Recent Work

Whether you’re a homeowner looking for inspiration for your own home or a developer or architect looking for examples of the kind of results we can achieve, then take a look at some of our recent work. At Sandymount, our team is committed to delivering the highest standards of quality installations.

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What Do Our Customers Say?

Dedicated to delivering complete customer satisfaction, our customers’ feedback is very important to us. Have a read of some of our customer testimonials below.

Raffaele Dilandro

Google

Mick and Michelle proved to be delightful partners throughout the entirety of Phase 1 in our project. With a pressing deadline and the need for a comprehensive service covering both supply and installation, effective communication and regular updates were crucial for successful completion. We decided on the Origin Slimline Window (OW-70) for its premium quality, backed by a reassuring 20-year warranty. The installation process was executed seamlessly, and we are pleased with the windows’ aesthetic appeal. The professionalism exhibited by our installation team was commendable. Without a doubt, we will be considering this company again as we move into Phase 2!

Steve Goodwin

Google

Had a great experience on a large install project of Origin windows and Bi-folds. Amazing product and the service has been superb. We had Max round a week ago for some minor works and he was a real credit to the Company, very friendly and helpful, clearly wanted to make sure we were happy. Would definitely purchase again from them.

Stuart Firth

Google

Really efficient installation of bi-fold doors. Staff were polite, friendly and helpful. Michelle was always prompt with replies and information. Highly recommend.

Fiona Simpson

Google

Would highly recommend sandymount windows & doors. We had a stunning composite door put in a few weeks ago and are really happy with it. Great value for money.

S. Head

Google

Matt and Ben always helpful, product (origin) best bi-folds on the market, from order to delivery very efficient sometimes arriving within 48 hrs now that is great service. We have used them several times and they have never let us down and look forward to using them again in the future. Rob Hall of Hall & Jones Windows, Doors & Conservatories Ltd.

Richard Hollamby

Google

Most helpful company and I am very pleased with my new door; Sandymount made an excellent job of installing it.

Lisa Carter

Google

Fantastic service from Sandymount Windows and Doors. From ordering to delivery it was a quick process and I was kept up-to-date on the delivery date. We are over the moon with our Juliette doors in our new loft conversion.

A. Wild

Google

Mick Haren and his team were excellent from start to finish with our new Origin Bifold doors. It was during difficult times in early 2021 when work commenced, but they worked safely and responsibly. The tradesmen were polite and professional and their work was to a high standard. Michelle Woodham was in contact throughout the project updating us on deliveries arriving, who was coming and what work was to be carried out. Options were talked about during the survey, for specific requirements we were looking for so we were able to have the perfect glass and frames sizes for our space to how we wanted. Origin OB49. I would highly recommend Mick and his team to carry out any project, as we are extremely happy with the doors once they were completed.

Darron Henn

Google

Having decided upon the Origin Bifold and window system I contacted Instadoor after getting their name from the Origin website. Being located in Worcestershire, I had initially contacted an Origin Partner nearer home but to be honest the response was very poor whereas Instadoor were responsive and dealt with any questions concerning specification quickly, and the distance was not an issue. The survey and installation went very well and their guys were clearly very skilled in handling the Origin product.
One of the glass panels was found to be cracked and they replaced it a week later together with final cosmetic finishing touches. Overall I was very satisfied with Instadoor and would certainly consider them again for any future projects.

Nick Maceky

Google

Had quick responses and helpful support from Michelle and Max came out to fit the doors. There was a bit of an issue with measurements and framework but he and his colleague explained what was needed thought about solutions and worked hard but cheerfully to fit the doors to the highest standard. Max was keen to point out he would have to make some compromises due to the frame but worked hard to do a job to the best standard achievalbe. The work looks great and it always helps when there person fitting them is polite, honest and professional. Great job Max thanks for your hard work.

Tim Sisson

Google

Excellent Service. I ordered a new premium product from a top brand and Instadoor were there to make sure the order was accurate and delivered on time. Although there were a few teething problems with the manafacturer’s new production line, Instadoor chased and organised them to ensure my project timelines were not affected. Much appreciated.

Sam Jones

Google

Great service. Reliable, trustworthy and rectify any issues without quibble.








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    The Locations We Serve

    At Sandymount, we cover North Wiltshire, Oxfordshire, Gloucester, and the outskirts of Bristol. However, if you have a certain project in mind, we can travel further depending on the work required.

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