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Sportcoat Acrylic Maintenance Brochure

Scope
This document sets out the description of court surface conditions and problems that may develop during service. It also sets out information regarding periodic maintenance procedures recommended to be undertaken on courts and other paved surface areas.

Description
Any contract for repair work to be performed shall include all required labour, materials, equipment and supplies necessary for the work to be done. The products and procedures should be as recommended by the tennis court contractor and the manufacturer of the material used in the repair work. Prior to commencement of work, the court owner and contractor should have a written agreement as to the extent of the work to be done, as well as the end result of the repair work expected by the owner. This agreement should include a description of the present condition of the court(s), including photographs prior to commencement where necessary.

Standards Repair work should conform to good working practice and accepted standards for tennis court construction.

Defects
By far the most common problem on hard courts is cracking of the surface. This and other defects that may progressively worsen, or promote problems if not attended to are listed below.

Court cracking: Cracking occurs either in the base or on the surface of tennis courts. It may be a result of construction or site condition problems such as inadequate surface falls on the courts, inadequate site drainage, base movement, poor compaction of the sub-base, or other design faults. The scope of works to effect satisfactory repair should be determined by site inspection by experienced and qualified tennis court contractors.
Shrinkage Cracks: These are random patterned inter-connected cracks, usually forming irregular angles and sharp corners. The cause of shrinkage cracking is commonly volume change in the base or subgrade. It is particularly prevalent where base/sub-base materials have unsatisfactory Atterberg limits, e.g. clay bearing lateritic gravels. Poorly compacted asphalt materials can be placed under stress and crack when coated. (see mud-cracking below) Conversely, over-compacted asphalt may shrink during aging, causing additional stress.
Reflection Cracking: This may occur in asphalt or seal coat, either original or surface overlays. These cracks reflect a crack pattern in the pavement structure underneath and are generally caused by movements in the pavement beneath the overlay resulting from cyclic temperature fluctuations and/or earth movements. Reflection cracks in asphalt overlay on concrete slabs, frequently follow the construction joints of the original slab.
Alligator cracking: These usually start as hair line cracking over entire surfaces. and most often occur in the surface treatment applied over asphalt pavement. Its identified pattern will vary from a faint surface pattern to full-depth cracks and loose particles of the surfacing material.
Ravelling: Ravelling or spalling is the progressive loss of material in the surface of the asphalt or concrete slab, usually caused by weathering or traffic abrasion on courts with no surface treatment.

Other maintenance items

Heave or subsidence of the structure: This is displacement of pavement due to changes in the subgrade or some portion of the pavement structure. Upheavals are commonly caused by root growth in the granular courses beneath the pavement or in the subgrade. Upheavals may also be caused by the swelling effect of moisture on expansive soils. This is usually due to improper drainage below and/or around the court area. Problems may also develop due to lack of proper storm water drainage or soil erosion. Major depressions are often caused by decaying organic matter below the sub-base or inadequate compaction of the sub-base.
Weed Encroachment: Caused by allowing uncontrolled grass/weed growth at fence lines.
Growth of puff balls: Spores may enter subgrade via surface cracking, but may also travel below ground in transient moisture. Spores appear to lie dormant, in some cases for years before appearing as volcanic eruptions on the surface of tennis courts.
Surface Algae/blemishes: Generally caused by build up of organic matter, leaves etc. allowed to lie for prolonged periods. A damp environment is ideal for the propagation of unwanted growth.
Activity of ants termites: Ants can undermine tennis courts causing subsidence of the surface. Likewise termites can destroy any wooden furniture on the court.
Movement of court furniture: Net posts, fence posts and lamp columns are all subject to stresses and need occasional maintenance.
Wear and Tear: Racquet gouges, indentations in the surface, scratches and other mechanical damage and damage to the surface by man made contamination, the most significant of which is CHEWING GUM.

REGULAR HOUSEKEEPING MAINTENANCE

Outdoor hard courts are easy to maintain due to natural cleansing by rain. Any residual mud, dirt and leaves, and other foreign matter not removed naturally should be cleared as required, otherwise deterioration of the courts surface will result Keep the courts clean at all times by occasional sweeping During the tennis season, when heavily used, courts should be hosed off with water from time to time say once a month or so and allowed to dry. Avoid using stiff bristle brooms use soft nylon or hair types for sweeping. Use normal water pressure for hosing. Any stains on the court may be removed using a mild detergent and scrubbing with a scrubbing brush. Mould, mildew or algae forming in shady areas, can be removed by an application of diluted household bleach (min 2 parts water, 1 part bleach). Treated areas should be rinsed off after a few minutes to remove surface contamination. Repairs may possibly be made to this type of cracking with surface treatment coatings or with a combination of fibreglass membrane and surface treatment coatings. It may be necessary to resurface the court using various methods such as geotextile membranes, stone slip-sheet, or installation of a modular or pre-manufactured surface system. This condition may be corrected with the use of surface treatment coatings or an overlay of asphalt mix, followed by surface treatment coatings, depending on severity of the condition. It may be necessary to resurface the court incorporating methods such as geotextile membranes, stone slip-sheet, or installation of a modular or pre-manufactured surface system. Reconstruction of the court is usually required to remedy this condition. bird bath is a minor depression in which water settles on a non-porous court surface after a rain or flooding. If standing water does not cover a five cent piece, it is considered within tolerance and will evaporate within a reasonable amount of time. Multiple applications of a surface treatment coating may minimize or eliminate ponding. Court repair problems often involve net posts and net post footing failure. Courts should be checked annually for signs of structural and surface distress, not noticed during regular housekeeping. The courts should be thoroughly cleaned. Any weed growth around the perimeter should be poisoned. Courts of a bituminous construction benefit from rolling at this stage. Any cracks which have developed should be filled with a suitable crack filler, and any gouges or other surface damage should be similarly repaired. Major problems such as heave or subsidence should be noted and discussed with a tennis court contractor, to establish the most cost effective means of overcoming the problem. Surface heave and cracking around the perimeter of the court should be considered in connection with any trees in the immediate vicinity of the court in regard to root growth, and appropriate action taken.