About Us
At Matthew Alexander, we are a trusted glazing specialist serving South West London, South East London, Reigate and Dorking. Our team designs, supplies and installs bespoke internal steel and aluminium doors and screens for residential and commercial properties. With years of experience and a focus on quality, we create stylish, functional glazing solutions tailored to each project. From open-plan room dividers to workspace partitions, our installations enhance space, light and flow—without compromising privacy or structure. We pride ourselves on delivering professional results with minimal disruption and no hard sales tactics.
In addition to internal systems, we also offer a full range of external steel and aluminium windows and doors, as well as UPVC and composite glazing options. Every unit we supply is precision-made, expertly installed, and built to meet modern standards for energy efficiency, security, and low maintenance. Whether you’re renovating a period home, upgrading a commercial space, or starting from scratch, we provide glazing that complements your architecture and improves how you use your property. From first consultation to final installation, you can expect a transparent, friendly service and lasting results.
Expert Installers of Internal Steel and Aluminium Doors
Why Choose Our Bespoke Glazing Solutions?
Internal steel and aluminium doors and screens offer a smart, contemporary way to define space while keeping interiors bright and connected. At Matthew Alexander, we custom-build every unit to match your size, layout, and finish preferences. Steel frames provide a bold, industrial feel with ultra-slim sightlines, while aluminium offers lightweight flexibility and modern simplicity.
Both systems are fitted with safety glazing, powder-coated in your chosen RAL colour, and available in single, double, sliding or fixed formats. Whether for homes, studios, offices, or showrooms, these doors and screens deliver long-lasting performance with minimal maintenance.
Our glazing systems also improve energy efficiency by allowing more natural light to flow through your space, reducing reliance on artificial lighting. Each installation is precision-engineered for thermal insulation, acoustic control, and visual continuity. With a focus on clean lines, functional design, and expert installation, Matthew Alexander offers glazing solutions that enhance the way you live and work—while adding value to your property.
Key Features of Our Internal Glazing Systems
Our internal glazing solutions are designed to be both practical and visually striking, offering a perfect balance of function and form.
- Bespoke design to suit your interior
- Strong, durable steel or lightweight aluminium frames
- Slimline glazing for more natural light
- Fixed screens, swing or sliding door options
- Wide choice of RAL colours
- Suitable for both homes and commercial properties
External Steel & Aluminium Windows and Doors
Our external steel and aluminium systems are built for durability and refined design. These frames offer exceptional structural performance, making them ideal for modern and traditional properties.
- Slim sightlines for maximum light
- Powder-coated RAL finishes for weather protection
- Thermally broken profiles for energy efficiency
- Double or triple glazing options available
- Multi-point locking systems for added security
- Suitable for homes, offices, and retail units
UPVC Windows and Doors
UPVC systems offer a low-maintenance, cost-effective glazing solution. Popular with homeowners across London and Surrey, they provide reliable performance and a wide range of style options.
- Affordable, long-lasting materials
- Strong thermal and acoustic insulation
- Low maintenance – no painting or treating needed
- Variety of frame styles and finishes
- Secure multi-point locking as standard
- Ideal for replacement or new installations
Timber Windows and Doors
Timber glazing offers timeless character with modern performance. Perfect for period homes or projects seeking a natural finish, timber frames bring warmth, charm and lasting quality.
- Sustainably sourced hardwood or softwood options
- Can be painted or stained to suit your property
- Excellent natural insulation properties
- Authentic profiles for heritage compatibility
- Bespoke sizing and glazing options
- Ideal for listed buildings and conservation areas
We had a great experience from Matt at Matthew Alexander, very fairly priced and honest, knowledgeable and reliable. I would highly recommend his work
Great service and really good quality products. Our new front door is fabulous. Very impressed, thank you
Absolutely brilliant service from Matt throughout. Incredibly speedy, professional and good value for money. Thank you so much
Brilliant service fitting a new composite back door at our house. Very competitively priced and work undertaken to a great standard. Would definitely recommend.
We had a front door fitted by Matt, brilliant job, highly recommend, very quick, clean and tidy,very pleased
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Matthew Alexander
Reigate, United Kingdom