FOUNDATION - ground moisture and pressurized waterproofing cementitious system CR 65

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FOUNDATION - ground moisture and pressurized waterproofing cementitious system CR 65
Ceresit offers complete systems for every kind of waterproofing.
Chosen product and application method should depend on construction’s type, water load and requirements of the country.
CERESIT CEMENTITIOUS SYSTEM (CR 65)
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Foundation - ground moisture and pressurized waterproofing
1. SUBSTRATE PREPARATION
Before application of the waterproofing materials check if the substrate is dry, even, compact, stable, free of dust and laitance.
CX 5 ASSEMBLY CEMENT FOR RAPID FILLING AND ANCHORING
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CX 20 INSTALLATION AND REPARATION MORTAR
Any damage at the substrate should be filled in and levelled with e.g. cementitious mortar. Chamfer all edges at an angle of less than 45 degrees. Get rid of any substances which decrease adhesion. To remove all loose particles and laitance from the substrate use the grinding machine or steel brush. Remove the dust properly to prepare the surface for further work.Concave fillet inner corners, e.g. with cementitious mortar in the radius of about 4 cm. Allow the concave fillets to dry properly.
2. PREWETTING OF THE SUBSTRATE
It is very important to thoroughly prewet the prepared substrate in the area of application with Ceresit CO 81 or at least water.
CO 81 Silicifying fluid
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3.WATERPROOFING SLURRY APPLICATION
Mix Ceresit CR 65 into clean water and stir until becoming homogeneous and free of lumps. Wet substrates, recognizable by a visible darkening in colour, must be waterproofed with Ceresit CR 65 waterproofing slurry. Apply the first layer of CR 65 with a brush. When the first layer of CR 65 is dry/hard enough, we can proceed with application of second layer.
The consistency of the slurry should be adapted to the application method by brush or trowel. Smoothen the surface.
Depending on the water load, right thickness of cementitious slurry has to be applied.
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4. INSTALLATION OF PROTECTIVE LAYER
In order to protect waterproofing layers against damage you can use for e.g. a fleece, EPDM boards etc.
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