Tiler Costing & Tanking Systems: Bonded Waterproofing (AIV), SIA 248 & Wet Area Classification
Operational guide for Swiss tiling contractors and wet area specialists: bonded waterproofing systems (AIV) under SIA Standard 248, wet area exposure classes under SPV / KBOB, BKP 272 / BKP 281, and gradient formation in barrier-free walk-in showers.