Not your typical double glazing supplier.

Instadoor was founded on the belief that buying high quality glazing products should be an easy and pleasant experience - no pressure by pushy salesmen and only transparent, easy to understand quotes and orders that you're free to review and commit to in your own time, in the comfort of your own home or office.

Unlike many of our competitors, we're also experienced in construction which means we can easily carry out any associated building work via our sister company Sandymount Construction Limited if it's needed as part of your window or door installation. It also means that we can work directly with your builders to make sure your new set of aluminium bifolds or uPVC windows are fitted without a hitch. And if you're a tradesperson looking for a reliable supplier for your clients' projects, it means a simple, stress-free interaction knowing that we're also in-the-know when it comes to building regulations and the like.

Our standard of service & knowledge has helped form our reputation as the easiest way to buy great glazing products knowing that we will deliver exactly what we say we will, when we say we will, without the pressure.

Starting out supplying and fitting aluminium bifolds, over the last five years our product range has grown to incorporate windows, sliding patio doors, roof glazing, composite residential doors and most recently a range of uPVC windows as well as our range of commercial doors. We choose our product range very carefully to make sure we only offer products which we know offer great value for money, fast lead times, and a trouble-free buying and installation process.

Our Vision

To be the best supplier of high-quality glazing products in the UK, with a network of approved trade partners to offer a comprehensive, turn-key service to trade and retail customers alike and to be recognised by those customers as an industry leader for our customer service, value for money and product quality.

Our Values

Fair, ethical treatment of employees, customers and suppliers alike. All our key team members come from backgrounds which consider integrity an essential when it comes to delivering an excellent level of customer experience. We're proud to offer a service which stands out from the industry in a positive way.

Our Suppliers

Our team are proud to be an accredited supplier and installer for Origin Doors & Windows, an award-winning UK manufacturer of bespoke aluminium bifolds, aluminium sliding doors, front doors and aluminium windows. And because our fitters have been trained by Origin to install their products, we can offer you a 20 year guarantee.