Waterproofing

Uses: The high elasticity, excellent bond and low water permeability of Nitoproof 600 make it ideal for a wide range of water/ vapour proofing applications such as foundations, basements, tunnels, ground floors, suspended floors, car decks, roof terraces, balconies, patios, bridges, precincts, inspection pits, water retaining structures (not potable water), sewage works, and inverted roofs. The excellent chemical resistance of Nitoproof 600 makes it particularly suitable for tanking applications in areas where aggressive ground water conditions prevail. Advantages: One component; ready to apply direct from the can Liquid application means details are simplified and there are no joints in the membrane Highly elastic, cures to give a permanently flexible resilient barrier over a wide range of temperatures Rapid installation; significantly reduces time spent on preparatory works and detailing Excellent adhesion, can be applied to a wide range of substrates. Continuous adhesion prevents lateral migration of water Impervious - outstanding barrier properties ensure protection against corrosive soil conditions Thermally stable - irreversible chemical cure eliminates melting and flow at high temperature Excellent resistance to oxidation and embrittlement Mechanical damage to the membrane can be easily repaired by spot application Ideal as a water/vapour barrier. Standard Compliance: Nitoproof 600 meets the requirements of ASTM C836-84. Description: Nitoproof 600 single component pitch modified polyurethane cures by reaction with atmospheric moisture to give a tough elastomeric waterproof membrane. It is supplied in a single grade to meet all site application methods and requirements. Nitoproof 600 is a medium viscosity grade (approximately 600 poise) for roller, squeegee or spray application to horizontal and vertical surfaces. Instructions for Use: Preparation: All surfaces to be waterproofed should be sound, clean and dry. Concrete surfaces should have a light steel-trowel followed by a fine hair-broom or equivalent finish which is dry and free of dust, oil and other contaminants. All high spots should be removed. Moss and lichen must be removed physically followed by treatment with fungicidal wash to kill any spores and inhibit further growth. After treatment wash down thoroughly with clean water and allow to dry. All metal surfaces should be made clean of paint, oils, rust and other contaminants. Abrade to expose bright metal then wipe clean with Fosroc Solvent 102 prior to priming. Priming: Priming is not normally required on good quality concrete substrates. However, absorbent surfaces such as porous concrete, sand/cement and cement boards will require sealing to prevent absorption of Nitoproof 600. This should be done using a 1:1 mixture of Nitoproof 600 and Fosroc Solvent 102. Use Nitoprime 32* as a primer for bituminous surfaces. All metal and PVC surfaces should be cleaned and abraded before priming. Movement joints: All expansion and movement joints should be sealed with Nitoseal 220*† . When cured, Nitoseal Debonding Tape*† should be applied to the top surface of the sealant and the joint then overcoated with a 1.3mm thick application of Nitoproof 600 extending 150mm each side of the tape. Embed a 100mm or 150mm wide strip of Nitoproof Scrim*†, then allow to cure before general application.

Brushbond TGP* crystalline capillary waterproofing system contains proprietary blend of portland cement, quartz aggregate and special chemicals. In the presence of moisture, the active chemicals in Brushbond TGP* crystalline waterproofing system penetrates concrete and react chemically with free lime to produce insoluble crystals. This crystalline growth reduces porosity by blocking capillaries and filling hairline non structural cracks ( upto 0.25mm wide) caused by shrinkage or expansion. Unlike metallic and membrane types of waterproofing which only form a surface barrier, Brushbond TGP* crystalline waterproofing system, in the presence of water, continues producing crystals and lasting imperviousness to water.