Cementitious rigid and flexible slurry systems

The mineral substrate must be even, solid, load-bearing, clean, crack-free and free of substances that may impair adhesion. The surface must have a rough, open pored structure with good grip. All edges must be cut off or chamfered. Cove all corners with a hollow moulding of at least 4 cm radius.

Repair any defects, screed over rock pockets and fill mortar joints. Enlarge the cracks and fill them with cement mortar alternatively. If the brickwork is uneven with numerous projections and defects, produce a levelling render made of cement mortar. Make sure to thoroughly prewet the prepared substrate. When waterproofing from negative side, the substrate must have sufficient mechanical strength.

Apply the slurry with a brush (if manually applied, first layer must be always applied with a brush) or a trowel in at least two operations. Sealed surface should be protected against too fast drying and the direct exposure to the sun. Apply the second layer only when only when the previous layer is hardened but still damp. If the application of the second layer is also done with a brush – it should be done in a crosswise manner.

Fix the CL 152 tape across the expansion joint or the wall/ floor junction. Embed the CL 152 tape with the waterproofing material up to the marking line. Make sure that the expansion zone in the middle remains free. When expecting joint movements above 5 mm, the bridging tape must be laid with enough slack. The surfaces to be welded must be free of substances that may impair adhesion; in particular they must be clean and dry.

The horizontal waterproofing layer is always applied before the vertical wall and floor insulation. It protects the building and its components against the capillary rise of moisture.

Apply the slurry with a brush or a trowel in at least two operations. Sealed surface should be protected against too fast drying and the direct exposure to the sun. Apply the second layer only when only when the previous layer is hardened but still damp. If the application of the second layer is also done with a brush – it should be done in a crosswise manner.