Concrete tiles, the most economic roofing material, date back to 1893. They were first used in Canterbury but are not a British invention. Their development is attributed to Adolph Kroher of Bavaria who, in the 1840s, created his own concrete mix and produced unique tiles shapes.

Most concrete tiles produced are said to be imitations of either clay tiles or slates and are usually guaranteed for around 50 years. They can have a smooth or sand-faced appearance and are available from roof tile manufacturers in a wide range of colours, profiles and textures. Apart from their price, the benefits of concrete tiles are: Strength Good acoustic protection Non-combustible Can withstand extreme temperatures of frost and heat Will not bow, warp or twist under ambient temperature changes Suitability for a variety of roof pitches

Concrete tiles can, however, discolour over a period of time and may suffer staining from the effects of natural lichen and mosses. They are not, therefore, maintenance-free.