Swainstons Ltd are a local business based in Stockton-On-Tees who specialise in the glazing industry offering years of experience in surveying, manufacturing and installing uPVC and glazing products to both residential and commercial customers since 1964. We also offer other building improvement services with our approved contractors including; joinery, plumbing and electrics so we can take away the planning stress away from our customers.





Bespoke manufactured conservatories since the 1970s. Available in the traditional poly-carbonate or active glass roof – We also offer the popular warm roof system to make your conservatory into an all year round living space with the Guardian System.





We offer a wide range of bespoke composite, bi-folding, patio sliding and uPVC doors all manufactured in-house at our factory based in Stockton-On-Tees. All our doors come with a certified high security hardware and glass along with a dedicated long-term guarantee.




Our windows and glazing are all made in-house at our factory based in Stockton-On-Tees with quality craftsmanship and service throughout. These include casement, bay and sliding windows made to any style our customers desire. We also offer bespoke hand crafted sash horns to give extra quality to the frames made by Swainstons.


  • Very happy with the work Swainstons carried out for us, I have used the company in the past and their service and product quality is second to none.–Customer in Stockton-on-Tees

  • Fantastic service throughout, the "A Team" fitters were spot on. Polite and tidy throughout our windows being replaced.–Customer in Stockton-on-Tees

  • Really happy with the doors we bought from Swainstons. The first guy who came out was honest and very informative about the product they sell and didn't feel pushy into making a sale at all. –Customer in Middlesbrough

  • Myself and my family members have been using Swainstons since we can remember. Lovely staff who are friendly and all of their products we have bought at a reasonable price everytime.–Customer in Darlington