Welcome to Abacus Windows
Abacus Windows are your local, professional manufacturers and installers of top quality PVCu windows, doors and conservatories.
As a family run business located in the heart of Chelmsford we have been manufacturing and installing windows since 1996 to local installers, general public and commercial contractors.
We offer a tailor made service that works closely with their customers. We are confident that we will guide you through your home improvement ideas converting them into a reality, our reputation relies on it. We openly invite you down to our manufacturing factory to see your windows as they are being made to give you full confidence in the work we do.

Replacement Windows

View our stunning range of UPVC double glazed windows. repalcement_windows_maidstone.jpg

Quality Doors

Read more about the different types of door we install. 46954_comp.jpg

Stunning Conservatories

View the different types of UPVC conservatories we install. upvc_conservatories.jpg

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Our Company
All of our products are manufactured to FENSA, VEKA regulations. Our installations come with a 10 year insurance backed guarantee. Abacus Windows professionally design and rigorously test each product to ensure they are the best that we can provide. Obtaining our own PAS24 accreditation for windows and doors not only show they are high quality but they are also the most secure. Also, as endorsed by the Police, all of our suppliers carry the Secured By Design accreditation meaning they match up to a Police Preferred Specification leaving you with the peace of mind that our components are safe and secure.
Our expertise and products can help you build the character to your home that you want
Our products minimise costs but keep the quality
We are a family run, family cultured organisation that is renowned for its customer service.
We guarantee the products you buy are the lowest cost on the market
We look after every single customer like they we're our first.
Our family run business offers a customer focused ethos.

Some of the suppliers we use and the organisations we are members of.

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