Windows and doors in Chelmsford: Your local AGS experts

Choosing a local, independent home improvement specialist offers benefits that go far beyond supporting your community.

At Advanced Glazing Systems, we’re a family-run installation company operating in Chelmsford, wider Essex, and East London for over 20 years. In that time, we’ve gained a real understanding of the area and its unique properties, something that simply cannot be said for a nationwide chain.

We specialise in installing energy efficiency-focused products, including aluminium and uPVC windows, doors, conservatories and more, all sourced from the nation’s best manufacturers. You’ll be protected long-term thanks to our extensive guarantees and be able to choose from a beautiful range of colours. To back these claims up, we have several vital industry accreditations. These include being FENSA approved, and a Which? Trusted Trader, with an average rating of 4.9 from over 350 reviews!

Here’s a deeper look at our product range, all available to be supplied and installed by local people in Chelmsford and beyond:

Windows and doors Chelmsford

We offer all of the popular windows and doors in the United Kingdom. We’ll break each style down in depth below, starting with window installation options.

These products are available in uPVC (the most popular in the country, a synthetic) and aluminium (a strong metal) materials, with double/triple glazing to choose from:

Casement windows

The most popular window style in the UK. Easy to open and versatile, casement windows open with a handle, either inwards or outwards depending on how you’d like them installed. Found in most homes in the country, their simplicity makes them affordable. uPVC and aluminium windows are available.

• Great all-round choice for most homes
• Available in a wide range of colours and finishes
• Thermally efficient, helping to reduce heat loss and keep energy bills down

Flush casement windows

Similar to casement windows, but the sash (the openable part of the window) sits completely flat with the outer frame, giving a refined look that’s growing in popularity rapidly. Sometimes called flush sash windows, they’re traditionally associated with period properties, but look equally at home on new builds. A slightly higher price point than the lipped standard casements.

• Improves your home’s appearance without losing practicality

• Ideal for cottages, older homes, conservation areas but new builds too

• Available in uPVC and aluminium

Sliding sash windows

Sliding sash windows slide up and down as opposed to opening outwards, and they’ve been found in this country for hundreds of years.

They are brilliant for letting in fresh air, and made using modern uPVC materials, you don’t need to worry about any performance issues. The traditional feel makes them a brilliant choice if you’re replacing old windows on a period property.

• Traditional look without the upkeep
• Helps reduce draughts and heat loss
• Beautiful appearance

Bay and bow windows

Bay windows project outward from the wall, typically found on lower floors, creating more interior space and a striking front elevation. Bow windows use a curved arrangement of panels for a softer, more rounded look. Both are brilliant for bringing in more natural light.

• Adds character and a pleasant appearance
• Typically found on lower floors, great for living rooms
• Creates a sense of space inside
• Works beautifully on both traditional and contemporary homes

Tilt and turn windows

Tilt and turn windows offer two opening positions, you can tilt them inwards from the top for ventilation or swing fully inward for easy cleaning. Particularly useful on upper floors where external cleaning is awkward.

• Ideal for flats and multi-storey homes
• Easy to clean from the inside
• Popular in aluminium for a modern, European aesthetic

Doors:

Here’s a look at our range of doors:

Bifold doors

Bifold doors fold back in panels to open up an entire wall, perfect for connecting your living space to the garden. When closed, you get plenty of natural light and clear views, and when open unobstructed fresh air and easy outdoor access.

• Great for kitchen and living room extensions
• Available in slim-profile aluminium for a sleek finish
• Maximises the feeling of indoor-outdoor living

Sliding patio doors

Sliding patio doors are similar to bifolds in that they eliminate a wall, but they slide and stack side by side in the corner. They don’t require swing space, so are a great choice if your floor area is limited, but don’t quite offer openings as expansive as bifolds.

• Space-saving and low maintenance
• Wide glass area lets in plenty of natural light
• Clean, understated look

Composite doors

Composite doors are built from multiple layers, often including a foam or solid timber core, internal reinforcement and a tough GRP outer skin. This makes them incredibly strong, secure and thermally efficient. These composite front doors are the UK’s fastest growing choice, and it’s easy to see why, they’re manufactured for modern life and have a real premium feel and appearance.

• Excellent insulation, helps cut heat transfer and reduce energy bills
• Highly secure, meeting PAS 24 standards
• Won’t change shape, fade or need repainting

We partner with Endurance Doors, Rockdoor and Solidor for our composite door range.

Aluminium entrance doors

Slim, strong and built to last. Aluminium entrance doors suit contemporary homes and offer a premium, architectural look with minimal maintenance.

• Slim sightlines for maximum glass and light
• Exceptional durability
• A bold upgrade for your home’s appearance

uPVC entrance doors

A reliable, cost-effective option that’s come a long way in terms of style and performance, to the point where they’re the UK’s most popular home entrance. Modern uPVC doors offer solid insulation, good security and a wide choice of finishes at an attractive price.

• Affordable without compromising on quality
• Thermally efficient and low maintenance
• Available in a range of styles to suit most homes

We also offer conservatories and roofing

If you’re looking to add space rather than just replace glazing, we’ve got you covered.

We install bespoke conservatories in popular styles, including Victorian, Edwardian and Lean-to, as well as orangeries, a more solid, extension-like alternative to a traditional conservatory. We also supply and install roof lanterns, which are ideal for flooding a flat-roof extension with natural light.

However, if you already have a conservatory, but it gets cold in winter and too warm in the summer, you likely don’t need a complete overhaul. All you usually need to do is replace the roof, something that’s cost-effective and incredibly effective.

We have glass, tiled and hybrid options available, all of which promise to keep your conservatory at a comfortable temperature all year round.

Why choose Advanced Glazing Systems?

Accreditations you can trust

We’re members of FENSA, the Glass & Glazing Federation, Secured by Design, TrustMark and the Trading Standards Institute. We’re also a Which? Trusted Trader. Every installation comes with a 10-year guarantee on parts and labour, 5 years on sealed glass units and a GGFi insurance-backed guarantee.

A proper local company

We’re a family business based in Essex, which means homeowners will receive a personal service from local fitters throughout, complete with great customer service. Our team brings over 20 years of experience, ensuring an expert installation on the day of installation. We also have in-depth knowledge of our local conservation areas, which is useful because we know what products tend to be approved in sensitive areas.

Thermal efficiency prioritised

The major demand on the home improvements industry right now is to provide products that are ‘energy efficient.’ But what does this mean for you? Energy efficient home improvement products reduce heat transfer, they keep the warmth in during the winter and prevent it from entering in the summer. This means you use your heating and cooling systems less, leading to lower energy bills and fewer emissions as well as boosted indoor comfort.

We install A-rated glazing, double glazing as standard with the option for triple, with U-values available for our new window replacements on request.

Our product partners

We work with some of the industry’s most respected manufacturers, including REHAU, Residence Collection, Smart Systems, Victorian Sliders, Ultraframe, Endurance Doors and Solidor, so you’re getting quality products that are tested across the country.

Our reviews

We’re really proud of our reviews. On both Trustpilot and Google, we’re rated at 4.9 stars from hundreds of reviews. A huge thank you to all of our lovely clients who have taken the time to leave us one!

Our case studies

Reviews are one thing, but viewing the work yourself? That’s what our case study section is for, showcasing images of our previous projects, completed by our in-house installers.

Ready to get started?

We offer free, no-obligation quotations and home surveys across Chelmsford, Braintree and the wider Essex area. Give us a call, drop us an email or visit us by appointment at our Essex office. Call: 01277 230101 Email: sales@advancedglazingsystems.co.uk