RAFs for exteriors are flooring systems that incorporate special ceramic tiles on PVC pedestals of adjustable heights, so that a certain space is left between the substrate and the tiled surface. This kind of floor is typically used for terracing and on flat roofs subject to low to medium pedestrian traffic. The system is made up of pedestals of adjustable heights and special tiles for exterior RAFs.
PEDESTALS
The PVC pedestals act as a support for the tiles and also determine the height of the system and width of the tile joints. They can range in height from 10 mm to 580 mm. In addition to the final height of the base structure, the thickness of the tiles must also be calculated.
CERAMIC TILES
Special ceramic tiles for exterior RAFs are double porcelain tiles glued together with a flexible adhesive with a high bonding strength. The resulting tiles are thick enough to comply with the breaking strength required for this type of raised access flooring.
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