Expertise

Sierra has been crafting high quality windows from its purpose-built factory in Devon since 1976, and that’s a legacy we’re incredibly proud of. Over those forty years, we’ve discovered just about everything there is to know about windows, doors and conservatories and we’d love to pass that knowledge on to you.

Our technical support team is always on-hand to help. Whether you have a query about measurements, want to know more about the latest energy-saving technology, or you need a few simple tips ahead of a fit, just give us a call.