Sapphire 4 Windows is based in Duston, Northampton, we have worked in the surrounding area for over 20 years. Our installers are time served carpenters with a vast of experience and knowledge

We only use market leader such as Ultraframe in all our product rages. The products sell themselves, we don’t employ salesmen only tradesmen.

We offer our clients a service which is second to none, not only do offer a great service from planning and design through to handing over the finished project to out clients. We also guarantee our work for 10 years which is backed up by our comprehensive insurance. This gives our clients complete piece of mind and real protection.

Sapphire 4 Windows also has a price promise, we will beat any genuine like for like written quotation.