HYDRO BAN® Over Rough Surfaces

Prior to the installation of LATICRETE HYDRO BAN® to out of tolerance walls, they can be dimensionally corrected and made smooth with a LATICRETE parge, skim or render coat to a wood float or light steel trowelled finish. When it comes to floors, these can generally be made smooth by screeding to falls with a LATICRETE mortar or levelled with a LATICRETE self-levelling compound. The use of LATICRETE latex mortars or dry polymer mortars will allow the dimensional correction and flattening of surfaces from a feather edge to any desired thickness. Do not use gypsum or asphalt based levelling products.

The designed dry film thickness of HYDRO BAN liquid applied waterproof membrane is 0.6 mm – 0.9 mm. This dry film thickness range is required for the membrane to perform as a part of an installation system under ceramic or stone tile. The background/substrate surface smoothness/ flatness, planarity of finish or its regularity is an important factor in achieving this design thickness. The flatter the surface, the easier it will be to apply the membrane and the easier it will be to achieved the desired film thickness. Ideally the maximum deviation in plane must not exceed 5mm in 3m and 1.5mm in 300mm for the high spot and surfaces shall be smooth without voids, protrusions or other interruptions in the flat plane.

For more information read Technical Data Sheet TDS1001 Installing LATICRETE® HYDRO BAN® Over Rough Surfaces.

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