Vertical Sliding Slash Windows

This window is probably the most traditional of all, keeping the original appearance of the property but with the latest technology. Thermoshield's heritage Vertical Slider also has a tilt in facility on both the top and bottom sashes. By the turn of the century the sash was the most widely used window, but since the first world war their popularity has been in decline. This is somewhat due to the labour costs involved in their manufacture when compared to the easily mass produced wooden or metal casement window.