Waterproofing World # Basics – Haunching
Haunching is a process of making the sharp corners into smooth curve in areas like floor & wall junctions and wall & wall junctions. Purpose of Haunching: The co-efficient of thermal expansion and contraction is different for floor and wall surface. Due to this the thin waterproofing layer may get damaged and leads to waterproofing failure. By providing haunching in corner the waterproofing layer will get more area when compared with corner surface (without haunching). It will not lead any damages to waterproofing layer. Also it helps in placing waterproofing layer easily. Surface preparation: Dead mortar chipping to be done and removed of loose materials should be ensured. Ensure that the surface is free from oil or grease or any other contaminants Material preparation: Cement mortar should be prepared in the ratio of 1:3 Any one of the suitable admixture should be added with cement mortar. For example admixture like SBR LATEX should be added with the cement mortar as per...
