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Orders before 12pm dispatched same day
Cementitious Coating 851 is a two component, thixotropic, cementitious modified polymer coating that provides internal and external structural waterproofing to concrete and other mineral substrates.
Cementitious Coating 851 is a two component, thixotropic, polymer modified, cementitious waterproofing coating. It cures to form a hard, durable, highly alkaline coating with a degree of elasticity which protects concrete and other mineral substrates from the effects of aggressive acid gases and chlorides and water ingress.
Usage & Highlights
Surface Preperation
The areas to be treated must be free from all unsound material, dust, oil, grease, corrosion by-products and organic growth. Smooth surfaces should be roughened, all loose material and surface laitance removed and reinforcement cleaned to bright steel using wet grit blasting techniques or equivalent approved methods. The strength of the concrete sub-base should be a minimum of 20MPa. The prepared substrate should be thoroughly soaked with clean water until uniformly saturated without any standing water.
Application
Cementitious Coating 851 is applied using brush, trowel or spray techniques. Care should be taken to ensure that air is not entrapped onto the surface. For vertical and overhead applications, apply in 2 x 1mm thick coats, applying the second coat when the first coat is stable but not fully set (typically 30-60 minutes depending on temperature). On horizontal applications (floors, decks, etc.) apply in a single 2mm thick layer, spreading with a notched trowel, squeegee or skid leveller, and immediately use a spiked roller to remove entrapped air.
Data sheet
Specific References
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