A profiled web for arrangement between the underside of floor tiles and an upper surface of a support plate. The profiled web is based on a rigid plastic film formed to have a parallel series of successive channels, each of the channels being defined by first and second edge portions and a trough portion...http://www.google.es/patents/US6151854?utm_source=gb-gplus-sharePatente US6151854 - Profiled web for venting and draining floor tiles, particularly ceramic tiles, laid in a thin retaining layer
Profiled web for venting and draining floor tiles, particularly ceramic ...
