Sash Masters offer a complete Restoration and Replacement Service for existing Sash windows, as well as the design and build of new windows.

Where required we work alongside architects to cater for clients in conservation areas. In these areas we have products such as Conservation Sashes, Box Sashes, Casement Windows and Historic Box Sashes. As part of our Restoration Service we will completely overhaul and draughtproof your window(s).

We also cater for Leaded Glass, Stained Glass Windows including Hand Painted Stained Glass and special Pilkington ‘K’ Glass with sound reduction qualities or Acoustic Glass where necessary.

To make and fit a window can approximately take up to 3 weeks, depending on the clients requirements. Once our clients are happy with the price we have given them, we draw up a contract with a mutually agreed start and completion date and a schedule of works.

We also make bespoke Window Seats and Shutters for all periods; Georgian, Victorian and Edwardian are our speciality. We can match joinery for window seats and shutters from any era required and we also cater for more contemporary and modern designs as well.

We use premium grade wood to make our conservation products. All our hardwood is hand selected from an English Mill that sources its wood from F.S.C. (Forest Stewardship Council) certified forests, ensuring it is from a Sustainable Source and Environmentally Friendly.

• Sash Masters will remove Staff Beads; Parting Beads; Sash Weights; top and bottom Sashes and Sash Cords and dispose of discarded materials appropriately.
• Both Sashes would be planed where necessary to give an improved fit. Any exposed wood would be filled and rubbed down and then painted with a quality Dulux Weathershield Paint System, consisting of primer; three coats of undercoat and one coat of gloss this will provide all weather protection for 6 years if used in accordance with the manufacturer's instructions and correctly applied.
  
• Machine router out each Sash with a channel to insert a Draughtproofing pile.
• Fit new Parting Beads and Head Beads with Brush Seals.
• Replace new Staff Beads with mitred joints and insert Draughtproofing pile.
• Replace all Sash Cords and fit to each Sash accordingly.
• Wax and/or replace Pulley Wheels and adjust weights where necessary to balance out the Sashes.
• Test Sash Windows for correct alignment and performance and adjust Window Furniture where necessary.

• We then supply and fit the Sash or Box Frame and replace the sill if necessary.
• Re-glaze Sashes using either Pilkington ‘K’ 24mm Double Glazed Sealed Units; Toughened Glass, Stained Glass; Lead Glass or Hand Blown Glass or Crown Sheet Glass.
• Renew Sash Lifts, Sash Pulls and Sash Fasteners, replace with chrome or solid brass window furniture.
• Renew high security chrome or solid brass window restrictors / locks.

The Dulux Weathershield System keeps your home looking good for longer. It is:

• Weatherproof - paint system does not swell or blister when wet
• Resistant to cracking and flaking - protects the wood or metal surface
• Mould and algae resistant paint film - to help minimise staining

The result is guaranteed for 6 years protection.

Waxed Cotton Sash Cord
Using waxed cotton sash cord is the traditional method of hanging lead weights. We use UK manufactured cotton sash that has a polyester core to add extra strength. It is available in 5mm, 6mm, 7mm and 8mm cord diameter and offers maximum weights between 30kg and 50kg.

Polyester Sash Cord
Polyester sash cord is diamond braided which is very strong and will not stretch. It is available in 6mm or 8mm cord diameter. Recommended sash weights are 50kg and 75 kg respectively. This is also manufactured in the UK.

Plated Nylon Sash Cord
Nylon sash cord has higher strength and will last longer.  It is all white with no coloured braids, therefore, giving it a traditional look. It is available in 6mm or 8mm cord diameter. Recommended sash weights are 64kg and 120kg respectively. This is also manufactured in the UK.

Fortunately, although the mechanism may look complicated, replacing a broken cord is a job that can be done with relative ease if you have the right expertise.

If you have a broken sash cord, the window will be difficult to open and will judder as it is raised or lowered. If both cords are broken, the window will not stay open. It's best to renew both cords if one has rotted.

Always remember that sashes can be very heavy, so great care has to be taken when working with them.


Sash Masters have clients throughout the UK, including West London, South London, North London, Central London/City of London, Buckinghamshire, Surrey, Essex, and Warwickshire.

Within the UK we have worked in Bath, Cheltenham, Gloucester, Solihull, Balsall common, Oxford ,York,
Hertfordshire, St Albans.