3. Special features of clay canal tile roofing

3.1 Conditions of use and maintenance

Use and maintenance requirements are the same as for other clay tile roofs. However, the presence of rainwater drainage channels (running tiles) and the asperities of the roof tiles and coverings make these roofs more demanding in terms of maintenance requirements.

Because of their relatively low slope (30% on average) and high roughness, canal tile roofs are particularly good at trapping plant debris such as pine needles and cones, some of which develop into seeds, mosses and lichens. This debris impedes the drainage of rainwater and compromises the roof's natural ventilation.

Keeping drainage systems in good working order is often simplified by the fact that, in most cases, gutter overhangs make...

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Special features of clay canal tile roofing

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Cards used to adapt the laying of canal tiles

Bibliography

(1) - Guide des couvertures en climat de montagne. - Édition Cahiers du CSTB, livraison 292, Cahier 2267-2, sept. 1988.

Also in our database

PAUCHET (W.) - Couvertures en tuiles canal de terre cuite. Présentation et conception des...

Standards

DTU 40.22. Building work – Roofing with clay channel tiles – Part 1: Technical specifications – Part 2: special clauses (commercial reference to parts 1 and 2 of DTU 40.22) - NF P31-201 - 05-97
DTU 40.21 – Building work – Interlocking or gliding clay tile roofs with raised edges – Part 1: Technical specifications – Part 2: special clauses (commercial reference for parts 1 and 2 of DTU 40.21), cancelled October 18, 2013 -...