Established over 35 years ago, John Williams is one of the largest home improvement companies in North Wales and the North West of England.
We are specialists in the design manufacture and installation of high quality double glazed products. Including Windows, Doors and Conservatories.
Manufacturing » Overview
Achieving the highest standards calls for advanced manufacturing. The John Williams purpose-built factory is one of the most modern in the UK. Computer controlled design and manufacture, with stringent quality control and testing at every stage, ensure we make only the best products.
 |
 |
 |
 |
 |
 |
Quality by Independant Assessment
The standards we set have earned our Company and products 5 BSi Kitemarks and 2 BSi Registered Firm awards.
Installation quality
One of the accreditations we have received is for installation of our products - This makes us one of only a handful of companies in our industry to achieve this status.
For more details on our kitemark awards, please click here.
NO OTHER COMPANY IN OUR OPERATIONAL AREA COMPARES!
