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.
Our windows and doors are all custom-made to your exact requirements. Additionally, they are available in a range of versatile design options.
With over four decades of experience in construction, our founder Mick Haren and our team ensure flawless installations for your peace of mind.
Designed with performance in mind, our windows and doors offer exceptional thermal efficiency ensuring they meet even the new stringent building regulations.
Our OI-30 internal door range from Origin features a classic Georgian style that adds elegance to any interior. These doors are available in various configurations, allowing you to choose the option that best suits your needs:
Aluminium internal doors offer a range of features and benefits that make them an excellent choice for any space. With their sleek design, customisation options, durability, and easy installation process, these doors provide both functionality and style.
The OI-30 range can be specified with or without a frame. Choosing a door without a frame allows for easier installation on existing frames while maintaining the same high-quality finish.
Our aluminium internal doors are available in various configurations to suit your specific needs. Whether you prefer French doors to divide larger spaces or single doors for smaller areas where privacy is desired, we have options to meet your requirements.
With over 150 RAL colours available, you have endless possibilities when it comes to matching your interior decor scheme perfectly, from bold hues that create a statement piece to subtle shades that blend seamlessly into any setting.
Our OI-30 models receive the same highly durable powder coating used in our external windows and doors. This ensures they maintain their visual appeal over time while providing long-lasting performance.
Colour Options
Our internal doors are available in an extensive selection of colours. Take your pick from over 150 RAL colours as well as dual-colour shades to match your interior and exterior decor.
Anthracite Grey
Natural Oak
Golden Oak
Jet Black
Slate Grey
Light Silver Metallic
Hipca White
Silver Metallic
Black Grey
Hardware Options
Add the finishing touch to your internal door by choosing from a range of quality hardware options including handles and hinges.
Steel Handle
Gold Handle
Silver Handle
White Handle
Black Handle
Handle
Handle
Handle
Handle
Downloads
If you're a tradesperson looking for the ideal internal door for your client's project, take a closer look at our product specifications.
Transform your living or working space with our range of high-quality internal doors. Our aluminium internal doors offer a sleek and modern design that adds an elegant touch to any room. With customisable configurations, versatile frame options, extensive colour variety, and exceptional durability, these doors provide the perfect combination of style and functionality.
Whether you’re looking to create separate zones within an open-plan area or add privacy to individual rooms, our aluminium internal doors are the ideal solution.
When it comes to selecting internal doors for your home, choosing the right supplier is crucial. At Sandymount, we are dedicated to providing our customers with exceptional products and outstanding service.
With years of experience in the industry, we have built a reputation as one of the leading suppliers and installers of windows and doors in the region. Our team takes pride in delivering excellence from start to finish. We prioritise customer satisfaction above all else, which means you can expect a trouble-free buying process with transparent pricing and no pushy sales tactics. We believe in treating our customers like valued members of our team.
At Sandymount, we understand that choosing the right home improvement is a big decision, which is why we’re happy to answer any questions you may have about our products and services.
Yes! We stand behind the quality of our products. Our OI-30 internal doors come with long-lasting guarantees to give you peace of mind knowing that they're covered against any manufacturing defects or issues.
Yes, our aluminium internal doors are designed to be energy-efficient. They feature advanced thermal insulation properties that help to minimise heat loss and maintain a comfortable temperature inside your home. This not only contributes to reducing your energy consumption but also helps you save on heating and cooling costs in the long run.
Yes, our aluminium internal doors are suitable for a wide range of properties. Whether you have a residential home, commercial space, or even an industrial building, our doors can be installed to enhance the functionality and aesthetics of your property.
At Sandymount, we operate across North Wiltshire, Oxfordshire, Gloucestershire and the outskirts of Bristol.
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.
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.
View project galleryDedicated 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
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
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
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
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
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
Most helpful company and I am very pleased with my new door; Sandymount made an excellent job of installing it.
Lisa Carter
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
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
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
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
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
Great service. Reliable, trustworthy and rectify any issues without quibble.
