What does diminishing courses mean?
Natural stone slates are traditionally random sized. The widths and lengths both vary. Slates are laid in diminishing courses from the larger ones at the bottom to the smallest at the top.
This method, although a little tricky to master provides a very pleasing result. The photograph alongside shows the subtle reduction in size as the courses ascend the roof, this is not generally noticed but you will probably appreciate the pleasant appearance and a sense of balance over the whole roof.
Our new natural stone slates range from 1150mm (38") tall down in 150mm (6") increments to 350mm (14") tall and each height of slate comes in 3 different widths.
This traditional form of slating is very common in Scotland and the north of England. It ideally requires the skill of an experienced slater but produces a weather resistant, high quality and most attractive roof.
What is a batten plan?
From architectural drawings, or even simple measurements Bingley Stone can create a diminishing course battening plan. This means we calculate what size courses will be required and more importantly, where the battens are to be fixed to result in a diminishing coursed layout to fit the size of your roof. We will then supply the stone slates to comply with the batten plan. This service can greatly reduce both the cost of the materials and the cost of labour by eliminating a lot of wasted time.