Nalstane SPA---Acrylate Coating for Flexible Court Surface

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Nalstane SPA---Acrylate Coating for Flexible Court Surface Introduction: Nalstane SPA is a scientifically developed composition of flexible and highly durable layers engineered to absorb and transfers the stresses of expansion and contraction as experienced in courts of cracked asphalt and concrete bases. The degree of movement is naturally limited to those factors created by changes in temperature. Degree of movement caused by inadequate design or construction practices on situations over "active soils" can not be calculated and may be in excess of the systems capabilities. Many substrates which form the basis of a surface on which to play recreational sports have either been severely damaged by the elements, suffered damage from poor construction techniques or the effects of over exposure to the elements resulting in a surface unsuitable for conventional hard playing surfaces. Until now the only course of acting has been to either install an over layer, replace the substrate or to install an expensive SiPU. Purpose To provide a hard court playing surface with the ability to restrict the damage caused to conventional hard court systems by the transfer of cracks due to either poor construction practices or in certain situations an unstable base. Where possible to avoid the replacement of a cracked or structurally sound base. To offer an alternative to SiPU at a competitive rate, the right choice is Nalstane SPA. Flexi-base provides the following advantages: • Controls the transfer of cracks from damaged existing surfaces and Provides a durable non slip hard court surface • Provides a definite cushioning feel under foot • Substantially reduces player fatigue • Substantially reduces sporting injuries generally experienced on conventional hard court surfaces • Reduces the need to remove and replace the existing surface • Provides minimum maintenance • Provides an economical alternative to SiPU. TYPICAL USES: Tennis Courts, Basketball Courts, Outdoor Play Areas, Volleyball Courts, Multi-purpose Sport Courts. SURFACE PREPARATION: NEW ASPHALT SURFACES - A tight, uniform and even surface is required to avoid the need for additional applications of Filler Coat. New asphalt surfaces shall be allowed to cure for a minimum of 10 days before the application of the Nalstane System. The surface finish shall be thoroughly cleaned to remove all loose dirt, dust, oil, grease, leaves and other debris. The surface shall be flooded with water to check for low areas. Minor depressions up to 3mm may be leveled using undiluted Filler Coat applied by steel trowel/squeegee or a combination of both. Deeper depressions and minor surface cracks shall be filled with Nalstane M-200 blending with concrete. PREVIOUSLY COATED ASPHALT SURFACES - Surface preparation requirements are similar to those stated above for new asphalt. The surface Shall be thoroughly cleaned and leveled. Existing cracks shall be cleaned and filled with filler coat Nalstane M-200. Existing line markings applied using an oil-based paint shall be removed. APPLICATION: Do not use Nalstane PA system when temperatures are either below 5°C or above 35°C, or when rain is imminent. Sound surfaces require the use of two (2) coats of Filler Coat and two (2) coat of Nalstane Top Coat. Areas of excessive porosity should receive an additional coat of undiluted Filler Coat applied by squeegee or trowel. In general, unless a slower playing field for tennis is required, the first coat is to be applied in a perpendicular (length wise) direction to the playing net. The second coat is applied parallel with the playing net with the finish coat perpendicular (length wise). To create a slower playing field the reverse procedure is applicable. BASE COATS – Mix primier A and B by ratio 1:1, stirring 4mintes and then Dilute it with water by ratio of 1 parts to 3 part of clean water and rolling onto concrete substrate. This base coats is not necessary for asphalt substrate. SECOND COAT (OR FILLER COAT) – Knife coat Filler Coat Nalstane SPA M1 with a wide flexible rubber squeegee, generally 600mm to 900mm in width. Level off with a second squeegee. Note: In situations where the asphalt base is unusually porous and additional filling is required, it may be necessary to apply additional coats of Nalstane SPA M1. Any subsequent squeegee lines must be rubbed smooth prior to the application of the final Filler Coat. TOP COAT - It is important that all ridges are leveled off prior to the application of the finish coat and that the finish coat is true with an even texture. Mix the Nalstane Surface coating in the ratio of 4:1 with fine selected sands. Pour the mixture in 'wind rows' over the surface and spread evenly with a wide flexible rubber squeegee, level off with a wide firm bristle broom before coating starts to dry. Apply a minimum of 2 coats, length wise of the court. COVERAGE: (BASED ON UNDILUTED MATERIAL) Coverage will depend upon the texture of the base surface to which the Nalstane SPA M1 Filler Coat is applied. Nalstane SPA M1 1st coat: 2-3 sqm per litre 2nd coat: 3-4 sqm per litre Nalstane Surface Coating 3-4 sqm per litre DRYING TIMES: In general the first filler coat application will take longer to dry because of the extra thickness of the product due to voids. Allow approx. 1-1.5 hours at 25ºC. Additional coats average 0.5 - 1 hour at 25ºC. Allow a minimum of 1 hour, depending on temperature, between coats. There is no maximum drying time limit between re-coats. Playing time is generally 24 hours after completion, dependant on good drying conditions. Full hardness and abrasion resistance will take 4 -5 days under good drying conditions. LINE MARKING: Apply Line-900 line paint by brush, roller or spray. Colours available are white and yellow. Apply in two (2) coats by brush or roller or one (1) coat by an appropriate spraying unit to achieve a total coverage of approximately 70 lineal metres per litre for 50mm wide lines. COLOUR RANGE: Nalstane is available in nine (9) standard weather resistant colours. Special colours are available on request. Deep Green, Forest Green, Light Sage, Terracotta, Light Terracotta, Mid Tan, Mid Blue, Blue Grey, Fawn. PRECAUTION: Store in a cool place, never in the hot sun, keep material from freezing. Clean all equipment with water, immediately after use. Do not allow Nalstane PA coating to drip on adjacent surfaces. Immediately remove drips with water as dried product is difficult to remove and will create a blemish on the finished surface. LIMITATIONS: Although Nalstane SPA coating has excellent early water resistance, do not apply when rain is imminent or temperatures are below 5°C or above 35°C.

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GUANGZHOU TONWELL TECH CO. LTD

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