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• Features & Benefits
• Application Notes
• Limitations

Features & Benefits

• Surface sealant for use with the Fosroc range of products. Suitable for use with the Nitofill and Nitokit range
• Please see the Product Data Sheet of the base product to determine compatibility
• Polyester resin compound which combines the dual function of sealing the surface of the crack and bonding on the injection points
• Supplied as a liquid resin together with a powder hardener, which are mixed together to give a stiff paste
• Can be rubbed down with suitable hand or power tools to give a smooth finish which readily blends with surrounding concrete, minimising the visual impact of the repaired crack
• Available in 5.5L packs

Application Notes

• Sealant has to retain the injection system under pressure. Care must be taken to provide a bond surface which is dry and free from any contamination
• Only mix enough sealant that can be applied within the usable pot-life (20 to 25 minutes at 20°C)
• Pour a small quantity of the resin into the mixing bucket provided and slowly add the powder. Stir until a smooth thick cream consistency is obtained
• Immediately after mixing, apply a small amount of sealant to the back of each nipple ensuring that the valve will not be blocked, then place the nipple to ensure the valve (centre) is firmly over the crack
• Nipples should be placed between 200 and 500 mm apart dependent on crack size. Additional sealant should be applied to the flange of the nipple to ensure a resin-tight seal to the substrate
• Sealant should be knifed into the crack between nipples to ensure a resin-tight seal
• Where cracks can be sealed on one side only, nipples should be placed at centres which are 80% of the depth to which the resin is required to penetrate
• Application of the injection resin may commence as soon as the sealant has fully hardened (at least 1 hour at 20°C or 2 hours at 10°C)
• Repaired cracks can be finished with the sealant 12-18 hours after injection
• Tools and application equipment should be cleaned using Fosroc Solvent 105 immediately after use. Cured material can only be removed mechanically. Spillages should be absorbed with sand or sawdust and disposed of in accordance with local regulations
• Should not be used to seal cracks where running water is present

Limitations

• To eliminate risk of exotherm, this product should only be mixed when ready for use and then applied without delay. Any unused residue should be poured on to a disposable impervious surface to allow cure before disposal
• Nitokit Surface Sealant is flammable. Do Not use near naked flames. No Smoking during use. In the event of fire, extinguish with CO2 or foam
• Product should be stored in accordance with the Highly Flammable Liquids and Liquefied Petroleum Gases Regulations 1972