Ultra-High Performance Sustainable Wood
TRIED & TESTED IN THE UK
Accoya high-performance modified wood has been chosen for its exceptional quality in widely varying environmental conditions around the world.
Thorough real-world testing has been conducted over many years on this long life wood which means we can confidently provide industry-leading warranties of up to 50 years.
Preserving Tradition, Enhancing Performance
Our Heritage sash windows are crafted to honour the individuality and charm of original designs while incorporating the latest in modern performance technology. Historically, sash windows were created by skilled local joinery manufacturers, each adding unique details to a common design. At Timber Sash Co, we embrace this legacy, using traditional craftsmanship and machinery to replicate even the most intricate variations in sections, mouldings, and styles, ensuring a perfect match to the original.