uPVC Sash Windows

Sliding Sash uPVC Windows give you the benefits of the vintage charm of traditional sash windows with modern-day thermal efficiency.

Our hand-built sliding sash uPVC windows are hard to distinguish from timber windows – so the decision to replace is easy. We use the very best materials in our hand-built uPVC windows, this includes using the best operating mechanisms for ease of use and security.

We know that you want much more than just looks when you choose sliding sash uPVC windows from Progress, which is why we use a unique profile system to manufacture our sliding sash uPVC windows. We also use a detailed sculpting system which is designed to give the window a great aesthetic finish and to look elegant – a trait rarely found in building products.

Available Colours

Yale Shootbolt Window Lock

Security is our priority. With the world’s favourite lock Yale, you can have peace of mind that your home and the things you care about most are secure. All our windows are available with an optional high-security shootbolt locking systems.

£1,000 Security Guarantee

With the Yale Shootbolt locking System Security Guarantee means you will receive up to £1,000 towards home content insurance in the unlikely event of a break in.

10 Year Mechanical Guarantee

Every Yale Shootbolt Window and door locking system is guaranteed against mechanical failure for 10 years after installation.

British Standards Institute (BSI) Specification

All components are designed and manufactured to the highest standards and tested to the latest BSI security criteria applicable to windows and doors.

Progress Windows are able to offer the A + 14, the highest available energy rating efficient window, exceeding industry standards and with no energy loss whatsoever. A window from Progress will keep the warmth in and be virtually draught-free.

Eco- Friendly

The dangers of lead are well known – however, each Liniar Window from Progress Windows is 100% Lead-Free and recyclable uPVC.

British Fenestration Rating Council (BRFC)

The UK’s nationally recognised scheme for measuring window energy efficiency. Using a rainbow label scheme similar to that found on fridges, freezers and washing machines helps to simplify the method used in comparing the energy efficiency rating.

Reducing your Carbon Footprint

Having uPVC windows installed within your home will reduce the amount of energy you use. By consuming less energy to heat up your home, you will also be reducing your CO₂ emissions. We use environmentally friendly manufacturing processes and recycle old products when completing an installation.