In order to install tiles on poured asphalt, this must be of minimum quality AS-IC 10 and be of minimum 25 mm thickness. The asphalt screed must have from 10 – 15 mm movment joints against adjoining structures, which are to be brought through to the final floor surface.
If the screed is newly installed, ensure that it is blinded with quartz sand. If this is not the case, then the substrate must be primed with an epoxy resin such as ASODUR-GBM broadcast with 0.2 – 0.7 mm quartz sand whilst still wet, before waterproofing or tiling.
