The apex of a roof can be given a sharp or soft outline by using different ridge profiles. The most commonly used is the half round ridge and a similar soft appearance is obtained with a hog back ridge. An angle ridge provides a sharp apex and this in turn can be broken up by using capped angle ridges or a special ornamental profile. Ridges are handmade at our Works in the UK - 300mm in length. Why Dreadnought tiles? Dreadnought Tiles are a British manufacturer based in Staffordshire where they have been manufacturing clay roof tiles using locally sourced Etruria Marl Clay for over 215 years. Etruria Marl (Staffordshire Clay) roofing products have unrivalled strength and durability (it is also used to make Staffordshire Blue Class A Engineering Bricks). All Dreadnought colours from blues, brindles and browns to reds are generated without the use of artificial stains or coloured sands; instead the colours are the product of careful control of the kiln atmosphere. This natural quality, which creates subtle colour variation within each tile, gives a unique quality to the Dreadnought product that enhances the appearance of any roof.