The image above shows a bay containing three separate sash windows. We manufactured the new sashes in Accoya® timber and upgraded the windows. The upgrade included our full double glazing package, spiral balances, seals and brushes. We also spray painted the woodwork in our own painting facility as part of the manufacturing process. Our sash window upgrades improve thermal efficiency and make the interior more comfortable. Ryedale Joinery sash window upgrades are available for all types of sash window, regardless of age or architectural style.