Welcome to Sterling PVCU

Based in Warrington and servicing the majority of the country, Sterling is one of the longest established and most highly regarded manufacturers of windows, doors, and conservatories in the United Kingdom. A privately owned company that has been built on the principles of providing customers with high quality products that are manufactured from market leading components, at the most competitive prices available.

Our Services

10 year guarantee

All our products are sold with a 10 year product guarantee for peace of mind


Free, no obligation quote

Call our dedicated team to provide you with a competitive quote for your next project


Fitting & installation

We have our own experienced fitting and installation team on hand to support you


Our Products


UPVC and Composite Doors

Our attractive and durable UPVC and Composite doors come in a huge range of colours, styles and finishes to suit every property.



Add light, energy and maximise the living space in your home with a purpose designed conservatory.


Equinox® Conservatories 

The Equinox solid conservatory roof offers a highly insulated living space which is comfortable to use all year round.


UPVC Windows

Our wide range of windows in multiple colour and style options mean you can find the perfect fit for your property.


Bi Fold Doors

Our advanced bi-folding door system offers ultra slim sightlines to flood light into your home and give an unobscured view of your garden.