🔍 What to Look for in a Double Glazing Company

Before diving into the top companies, it’s important to understand what separates a good installer from a great one.

1. Experience & Reputation

Companies with decades of experience tend to deliver more reliable results. Many leading installers in Berkshire have been operating for 30–50 years, building strong reputations locally.

2. Accreditations

Look for certifications such as FENSA registration or affiliations with recognised trade bodies. These ensure compliance with UK building regulations.

3. Product Range

Top companies offer a wide selection of:

• uPVC windows
• Aluminium frames
• Composite doors
• Conservatories

4. Guarantees

A standard 10-year guarantee is common among reputable installers.

5. Customer Service

From initial quote to aftercare, strong customer service is essential—especially for long-term installations.

🏆 Best Double Glazing Companies in Berkshire

Below are some of the most trusted and established double glazing companies in the Berkshire area.

1. Abbey Windows

One of the most established names in the region, Abbey Windows has been serving Berkshire homeowners since 1986.

Why Choose Them:

• Decades of experience in the Thames Valley
• Showroom available in Reading
• Flexible finance options available
• Strong reputation for quality installations

Abbey Windows specialises in a wide range of home improvements, including double glazing, aluminium systems, and conservatories. Their long-standing presence makes them a trusted choice for homeowners seeking reliability and expertise.

2. Berkshire Glazing Co

A highly respected local installer, Berkshire Glazing Co focuses on delivering high-quality bespoke glazing solutions.

Key Highlights:

• Over 40 years of combined experience
• 10-year guarantee on all installations
• Over 30,000 satisfied customers
• Strong focus on craftsmanship and detail

They offer everything from uPVC windows and doors to conservatories, with a strong emphasis on energy efficiency and security.

3. Cristal Windows and Doors

Cristal Windows is known for its premium installations and long industry experience.

What Sets Them Apart:

• Over 40 years in the industry
• FENSA-registered specialists
• Double and triple glazing options
• Strong customer review ratings

They serve Berkshire and surrounding counties, offering tailored solutions designed to improve insulation and home security.

4. Rainbow Double Glazing

A family-oriented business with a strong reputation for customer care, Rainbow Double Glazing has been operating since 1992.

Why They Stand Out:

• Member of The Guild of Master Craftsmen
• Focus on personal service and aftercare
• Strong word-of-mouth reputation
• Wide range of products including conservatories and roofline systems

They are particularly popular among homeowners who value a more personalised, local approach.

5. Sheerwater Glass

Sheerwater Glass is a well-established company offering a broad range of home improvement solutions.

Key Features:

• Nearly 50 years of experience
• Wide selection of window materials (uPVC, timber, aluminium)
• Energy-efficient and secure products
• Strong reputation across Berkshire

Their expertise across different window styles makes them ideal for both modern and traditional homes.

6. Camberley Glass and Windows

With roots dating back to the 1960s, Camberley glass and windows has built a strong reputation in both domestic and commercial glazing.

What They Offer:

• Nearly 50 years of experience
• Bespoke glass solutions
• Conservatories, skylights, and shopfronts
• High-quality materials and craftsmanship

They are particularly suited for homeowners looking for custom or specialist glazing work.

7. KJM Group

KJM Group is a trusted name known for its customer-first approach.

Why Consider Them:

• Established in 1983
• Which? Trusted Trader approved
• No-pressure sales approach
• Strong after-sales support

They provide both supply-only and full installation services, making them flexible for different budgets and project types.

8. Best Rated Glazing Ltd

A more modern company with a focus on design and innovation.

Highlights:

• Specialises in contemporary glazing solutions
• Offers aluminium and uPVC systems
• Focus on energy efficiency and aesthetics

Ideal for homeowners looking to modernise their property with sleek, high-performance glazing.

💡 Benefits of Double Glazing

If you’re still considering whether double glazing is worth it, here are the key benefits:

🌡️ Energy Efficiency

Double glazing reduces heat loss, helping you lower your energy bills and carbon footprint.

🔇 Noise Reduction

It significantly cuts down outside noise—perfect for homes near busy roads.

🔒 Improved Security

Modern double glazing includes advanced locking systems for added protection.

🏡 Increased Property Value

Upgraded windows can boost your home’s resale value and appeal.

💷 How Much Does Double Glazing Cost in Berkshire?

Prices can vary depending on:

• Window size and style
• Materials (uPVC vs aluminium)
• Number of windows
• Installation complexity

Typical UK pricing:

• uPVC windows: £400–£700 per window
• Aluminium windows: £800–£1,500+
• Full house installation: £5,000–£15,000+

Always get multiple quotes before making a decision.

⚖️ How to Choose the Right Company

With so many options, here’s a quick checklist:

• ✅ Compare at least 3 quotes
• ✅ Check online reviews and testimonials
• ✅ Ask about guarantees and aftercare
• ✅ Confirm certifications (FENSA, etc.)
• ✅ Visit a showroom if possible

🏁 Final Thoughts

Berkshire is home to a wide range of high-quality double glazing companies, from long-established family businesses to modern specialists offering cutting-edge designs.

If you’re looking for:

• Experience and reliability → Abbey Windows or Sheerwater Glass
• Local craftsmanship → Berkshire Glazing Co or Rainbow
• Premium/custom solutions → Camberley Glass
• Modern designs → Best Rated Glazing

The key is to match the company to your specific needs, budget, and property style.