The quick way to find a local Single / Double Glazing specialist in Knebworth

GW Glass

Single / Double Glazing

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GW Glass Here at GW Glass, we supply and install all windows and bifold doors and all types of units, we can help you make your home more luxury living. We do all types of maintenance on windows and doors. - broken down units -broken hinges -broken mechanism's - all types of single glazing GW Glass also designs and installs a wide range of glazing solutions to domestic and commercial clients across London, Essex and Hertfordshire. We are highly skilled and knowledgeable with the installation of affordable, quality windows and doors. Over 15 years experience, you are in safe hands.

Latest homeowner review

Reviewed by Alex on 6/3/2026

AKONI CONSTRUCTION LTD

Single / Double Glazing

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Akoni Construction Ltd Building with Quality, Trust, and Experience Akoni Construction Ltd is a professional, multi-trade building company committed to delivering exceptional workmanship while providing complete peace of mind throughout every stage of a project. Our focus is simple: to ensure every client feels valued, understood, and confident from initial consultation through to final handover. We take pride in turning ideas into reality, delivering each project to the highest possible standard with precision and care. ⸻ Our Experience With over 20 years of industry experience, we have built a strong reputation for delivering high-quality construction projects across a wide range of sectors. Our portfolio includes: * Large-scale renovations * Extensions and structural works * Full property developments Today, Akoni Construction Ltd offers a complete, end-to-end building solution—managing every trade under one roof for a seamless and efficient client experience. ⸻ Our Services We provide a comprehensive range of construction services, including: * Full property renovations and refurbishments * Extensions and structural alterations * Bathroom and kitchen design & installation * Plumbing and heating systems * Electrical installations * Carpentry and bespoke joinery * Plastering and decorating * Roofing and external works All works are carried out by fully qualified, highly experienced tradespeople, ensuring consistent quality across every aspect of the build. ⸻ Our Approach We believe that successful projects are built on strong communication and collaboration. From the outset, we work closely with our clients to understand their vision, offering clear guidance, transparent pricing, and professional support at every stage. We also partner with trusted architects, designers, and structural engineers, enabling us to deliver a fully managed, stress-free service—from concept through to completion. ⸻ Our Commitment At Akoni Construction Ltd, we are dedicated to delivering: * Outstanding quality workmanship * Reliable and professional service * Clear, honest communication * Projects delivered on time and within budget We don’t just aim to meet expectations—we aim to exceed them, leaving every client confident in both the journey and the finished result. ⸻ Akoni Construction Ltd Delivering excellence in every build.

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Reviewed by Martin on 7/2/2026

1st Central

Single / Double Glazing

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Leading supplier of double glazing of PVC and Aluminium and wooden windows, doors and conservatories. High quality double glazed windows and doors at affordable prices. UPVC, sliding sash, Bi-folding doors, Aluminium & Composite doors a wide range of bespoke designs from suppliers. Leading supplier of double glazing, PVC-U windows, patio doors and conservatories in Essex, Enfield & North London, with highly competitive rates, Delivering value for money.

Constantin Popa

Single / Double Glazing

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Together with my team we are providing very good services at the lowest costs.

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Reviewed by Darren on 11/8/2023

Brilliant work, all finished to high standard and finished quickly.

Aaron Construction

Single / Double Glazing

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We guarantee that every service is delivered exactly as agreed, with reliability and attention to detail you can trust. We are a fully VAT-registered business.

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Reviewed by Joe on 5/4/2026

Conserv-A-Tech

Single / Double Glazing

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We are a specialist local company dedicated in the construction of Conservatories, Orangeries, Glazed solid tiled roof extensions, Garage Conversions, Energy rated Windows & Doors, Bi-folding Doors, Composite Doors.

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Reviewed by Jeffery on 3/1/2015

Would recommend to use them

BBC windows and doors

Single / Double Glazing

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Over 15 years experience specialising in Double glazing. We offer supply and fitting for upvc and aluminium windows, upvc and aluminium doors,composite doors, patio doors, by folding doors, and many more. All product and work guaranteed for 10 years. we offer a wealth of skill and knowledge bringing unrivalled expertise to our customers. For your peace of mind we have liability insurance which covers up to £2m

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Reviewed by charlie on 28/12/2024

Really pleased with Ibrahim's service. Price was fair, installation was easy and more than happy with the end product. Would recommend. 5 stars!

Spelthorne Landscape & Garden Maintenance

Single / Double Glazing

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Small team of hardworking individuals dedicated to bringing the best to our clients.

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Reviewed by James on 13/4/2025

Amazing service - attentive and always communicative in terms of doing the right thing. Great job!

artisan builders

Single / Double Glazing

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Artisan Builders are a small company who have been trading for over 30 years around the Essex and Cambridgeshire area. We have a wealth of experience with a range of building works and trades. We aim to provide a friendly and professional service at all times.

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Reviewed by Lynda on 2/4/2014

First Class Company. We found Trevor and his people very courteous and friendly and they are most reliable.We are very satisfied with the work carried out.

5 STAR GLAZING LTD

Single / Double Glazing

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For Quality, Security and Energy efficiency call us we will provide free quote 5 Star Glazing Ltd. our products are covered by our 10 year Insurance backed guarantee Terms and conditions apply and installed by our highly trained fitting teams.

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Reviewed by Erol on 11/2/2025

Truly fantastic customer service. Removed all existing windows and door, replacing them with brand new materials. The team did not stop from the moment they arrived until the completion. Extremely polite and nothing was too much trouble. Excellent value for money, could not recommend them highly enough.

LJ Glazing

Single / Double Glazing

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LJ Glazing specialise in upvc windows and doors at affordable prices. With over 12 years experience, we pride ourselves on our high quality installations and making it a smooth process from start to finish. As we are a FENSA approved company you can be assured our work is done to a high standard and complies with building regulations. We give insurance backed guarantees for peace of mind when using LJ Glazing

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Reviewed by Graeme on 4/9/2023

Communication during the quote phase was patchy, but the price was reasonable and after awarding the job Luke fitted in with our availability, was punctual and courteous and the workmanship was of a good standard. I don’t expect to need him again, as this was a full replacement of windows and doors for the whole

1 SD Builder Expert LTD

Single / Double Glazing

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Hello ! 1ST BUILDER EXPERT LTD ! We carry out any type of work in the field of construction, interior and exterior! INTERIOR: we can do any work in any field, bathrooms and kitchens, tiles, parquet, doors, furniture, electrical, plumbing, painting, windows and much more! EXTERIOR: we can do anything: extensions, fences, pavements (any type), concrete slabs, concrete/plastic or wood gates and fences, garden maintenance, sheds, roofs, brick and much more!

Nation Windows

Single / Double Glazing

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Welcome to Nation windows Ltd, We strive upon our reliability and provide friendly customer service. As a result of we have built a strong foundation in our region. Each of Our collection is built to meet the customer’s criteria and demands. A home can be completely revitalized with the installation of aluminum and U.P.V.C windows and doors. We guarantee 100% customer satisfaction, with exquisite finish to our products to match your residents. Furthermore, using these materials is more sustainable for you and the environment as they can enhance your house energy consumption efficiency, weather resistance and security. We provide a wide range of design options and surface treatments so that your new windows and doors can be personalized to your exact specifications. There is a broad variety of colour option and designs available to you. Our installers are all skilled professionals that take pride in their work and are committed to giving you the best possible outcome for your home renovation. Our staff of in-house installers has been with Nation windows for years, so you know they are reliable and that we don't outsource the work.

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Reviewed by Leah Jade on 2/7/2025

Nation Windows did an outstanding job at a very reasonable price! I'm very happy with the window quality and the service Pam provided. I have recommended him to all my friends, and you should go with them!

ENTER GLAZING EMERGENCY LTD

Single / Double Glazing

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With 20 years’ experience in the trade, at Enter Glazing we provide a full 24-hour wide range of services in and around M25, London. We know how important it is to do the job right, that's why we are here to continue providing exceptional planned and reactive glazing services, ensuring homes and businesses are kept running smoothly. Here for all your glazing needs, we continuously strive to make improvements to our services and emergency response times, working to the highest standards for the benefit of our customers. Our goal is to carry on growing and expanding upon our services.

SLF LOCKSMITH AND CARPENTRY LTD

Single / Double Glazing

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Hi all, I have been a locksmith/carpenter for 25 years and I am NCFE qualified and fully CRB checked. I can solve all your lock, door, window issues and can open cars and safes. I have covered thousands of jobs in my work and I will solve all your problems in a clean and friendly manner. Locks picked, locks changed to insurance standard, Doors supplied and fitted, windows issues solved. UPVC expert. My son also has his own loft conversion company with his uncle and we can complete any Bespoke Carpentry & Conversions work.

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Reviewed by maurice on 29/6/2026

nicuABRU.SERVICE LTD

Single / Double Glazing

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NICUABRU SERVICES LTD is a company formed over 7 years ago, specialized in flats, houses renovation and house extensions. Our aim is to provide good quality services at a reasonable price and customer satisfaction is crucia

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Reviewed by TONY on 3/12/2024

Fantastic work, above and beyond what we asked them to do. Very happy with the finished job, done quickly too. Also great advice on other aspects of the refurb. Would definitely want to use the guys again. Thanks Nicu and Daro.

J&W Fabrication and Construction

Single / Double Glazing

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Family run fabrication and welding business and construction company offering all types of manufacturing and installation that works closely with our clients our aim is to provide fabrication and welding solutions also building construction with honesty and quality also help to complete project on time

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Reviewed by tina on 3/6/2025

What an amazing job John did. He is a very talented ironworker . Our gate looks like it was made for our house . Would highly recommend .

Calladine Services

Single / Double Glazing

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Calladine Services is a family run business which has been established since 1989. We specialise in painting agricultural, industrial and domestic buildings with our access platforms and American airless spray units.

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Reviewed by Peter on 14/9/2025

Idea View Technical Ltd

Single / Double Glazing

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Ideal View Technical Limited is a premier construction company with seven years of expertise in the industry. Specializing in extensions, loft conversions, and full refurbishments, we pride ourselves on delivering exceptional results tailored to our clients' vision. Our dedicated team of professionals ensures that every project is executed with precision, attention to detail, and a commitment to excellence, providing our clients with their ideal view of their dream space.

AK Home Improvements

Single / Double Glazing

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A one-stop-shop for all your home improvements & construction needs. We are team of professionals people with over 10 years of experience in all areas of building works. Our services include extensions, loft conversions, home improvements including but not limited to bathroom & kitchen installation, painting & decorating, plastering & skimming, wood flooring, carpet fitting, tiling, carpentry, electrical and plumbing services. We believe in providing a excellent service at an affordable price.