Sash Window Cord (Wax Cotton)

Waxed Cotton Sash Cord – Timber Window Repair 5mm–8mm
Enhance the longevity and performance of your timber sash windows with our UK manufactured waxed cotton sash cord. Designed for traditional weight-hung sash windows, this cord combines natural cotton with a polyester core for added strength, durability, and superior knot retention.
Supplied in four sizes 5mm, 6mm, 7mm, and 8mm our cord supports a range of sash weights while maintaining the classic look and function of your windows.

Price is per Metre:
Please Note: 'Qty' equals per metre, for example: Qty 1 = 1 metre, Qty 2 = 2 metres, Qty 3 = 3 metres, and so on... Supplied as a continuous coil.

Key Features

• UK Made: High-quality sash cord manufactured in the United Kingdom.
• Traditional Material: Natural cotton with a wax coating for smooth operation.
• Extra Strength: Polyester core increases load capacity and improves durability.
• High Wax Coating: Resists wear and supports consistent sash movement.
• Four Sizes Available: 5mm, 6mm, 7mm, and 8mm diameters.

Sizes & Maximum Sash Weights

• 5mm cord – 20kg / 44lb
• 6mm cord – 30kg / 66lb
• 7mm cord – 50kg / 110lb
• 8mm cord – 75kg / 165lb

Supplied in large coils, our warehouse team will cut to your required length for easy installation. Ideal for sash window repairs, replacement, or restoration projects.

Why Buy This Product?
Our UK waxed cotton sash cord is the traditional choice for timber window repair, combining authenticity with modern strength. The polyester core ensures your windows operate smoothly for years, while the natural cotton retains excellent knot holding and a classic finish. Perfect for both DIY restorers and professional installers.

Additional Information:
Installation Instructions

• Measure the cord to the correct length using your preferred method (e.g., Figure of Eight).
• Unscrew the pocket at the bottom of the side jamb. Cut the sash cord to the required length and feed it down through the pulley until it exits the bottom of the jamb.
• Thread the cord through the lead weight and tie a secure knot.
• Feed the cord and weight back into the side jamb and re-attach the pocket.
• Fix the cord to the routed groove (using a cord cleat) approximately midway down the sash.
• Repeat for the opposite side, ensuring the sash remains level.
• Check that the sash slides freely and adjust as required.

Maintenance Tips

• Inspect sash cords regularly for wear or damage.
• Avoid chemical cleaners; use warm soapy water if cleaning is necessary.
• Replace any damaged components promptly to maintain smooth operation.