Surface preparation: - Note: The substrate should have a surface tensile strength of at least 1.5 N/mm². The concrete substrate must be hard, sound, free of dust and other barrier materials such as paint, lime coatings, plaster, curing agents, laitance, oil, grease, wax, polish etc. that will inhibit adhesion to the substrate.
New Concrete Floors It must be allowed to cure for at least 28 days and shall have an effective damp-proof membrane below to prevent rising dampness. Contaminated concrete surfaces should be mechanically prepared, by grinding, scarification, shot blasting or similar methods and be vacuum cleaned prior to installing Starocrete Scratch coat. Overwatered or otherwise weak concrete surfaces must be suitably prepared down to sound, solid concrete by mechanical methods. Dust and other debris should be removed using vacuum equipment. Note: Any joints in the base e.g. movement joints, should be brought through to the finished surface and suitably sealed.
Old Concrete Floors Existing concrete floors which require refurbishment must be prepared to ensure a strong adhesive bond between the flooring system and the existing floor. Mechanical cleaning methods are strongly recommended particularly where heavy contamination by oil and grease has occurred or existing coatings are present. To ensure adhesion, all contamination should be removed. Alternatively, blasting techniques can be used to provide the required substrate. All previous floor coating if any must be mechanically removed to the maximum extent possible. It is acceptable to re-lay on floor coating that has a fir m bond (pull out strength of 1.5 N/mm2). All previous floor coating if any must be mechanically removed to the maximum extent possible. It is acceptable to re-lay on floor coating that has a fir m bond (pull out strength of 1.5 N/mm2). As with all surface coatings, proper surface preparation is vital to ensure the successful application and performance of Staroxy 103 MOT. The preferred method of preparation is vacuum shot blasting. Other methods, such as air impact hammer (sabbler) -provided that the substrate is not damaged, concrete surface planer, grit blasting, wire brush scarifier, surface grinder, drum sander and flame spaller, can be satisfactory. Chemical methods, such as acid etching, are not reliable and not recommended. Dust and other debris should be removed using vacuum equipment. NOTE: Any joints or cracks in the concrete base where differential movement is anticipated e.g. movement joints, should be brought through to the finished surface and suitably sealed. New concrete slabs must be allowed to cure for at least 14 days.
Other Surfaces The coating may be used on other substrates. Please contact Stanrose Envirotech India Pvt. Ltd. for more information.
Priming All areas to be treated with Starocrete Scratch Coat must first be primed with Staroxy 103 MOT Primer. One or more coats of primer may be required depending upon the condition and porosity of the concrete substrate. High porosity substrates may be revealed after preparation and will be evident by their rapid suction and absorption. Poorly primed surfaces may lead to blistering or pin holing in the cured resin.
Scratch Coat The scratch coat used is usually Starocrete 1000 Scratch coat. Mix Part A and Part B of the Scratch coat in a clean bucket with Electric Stirrer according to the instructions on the technical data sheet. Then add entire qty of filler component and mix it for two to three minutes till the homogeneous mass is obtained. Starting at the far corner, apply the basecoat by trowel and roller and evenly broadcast the Sand for firm grip with topcoat, into the wet product until all the basecoat is covered, except at the leading edge.
Mixing and Application: The individual contents of Starocrete TC 3000 should be thoroughly stirred before being mixed together. Mix Part A with Part D and stir the material for a minute. The entire contents should be poured in to a larger mixing vessel to incorporate Part B and Part C. The materials are mixed thoroughly with a spiral mixing paddle in a slow speed drill for 3 minutes until a consistent homogenous mix is achieved. One or more packs may be mixed simultaneously to ensure a quick rate of installation. Note: Once mixed, the Starocrete TC 3000 will generate heat and lose working time if it is left in the mixing container or otherwise kept in bulk. The mixed Starocrete TC 3000 material should be applied to the prepared and primed surface without delay using a trowel or depth set rake to achieve the desired thickness. As soon as the Starocrete TC 3000 has been laid and as work progresses, the surface should be gently rolled with a spiked roller in order to release any entrapped air from the mix and also to blend out any trowel marks. The work area should be protected during the installation process and during the initial curing time to ensure that no debris can contaminate the surface, as this will lead to unwanted blemishes in the hardened, cured surface.
Limitations The product should not be applied in temperatures less than 10°C or where the ambient relative humidity is greater than 85%.
Floor Joints All existing expansion or movement joints should be followed through the new floor surface. Joint sealant & joint geometry should be compatible with the floor type used, intended exposure conditions and likely movement characteristics of the substrate - consult the local Stanrose Envirotech office for more details.
Cleaning Starocrete TC 3000 can be removed from tools and equipment by using Stanrose PUT immediately after use. Any hardened material will need to be removed mechanically.
Maintenance Good housekeeping and regular cleaning is essential in order to maintain the performance of Starocrete TC 3000. It is particularly important in areas that are subject to regular spillage of chemicals. Spillages should not be allowed to dry, which results in higher concentrations of the chemicals, which may lead to early failure. Regular cleaning of the surface with a rotary scrubbing machine in conjunction with a water miscible cleaning agent or hot water washing at temperatures up to 50ºC is recommended.
