Many old basketball courts have been renovated into new ones, either by completely rebuilding them or by repairing and converting the existing structures. Since each situation is unique, it's important to handle them on a case-by-case basis. When replacing an old court with a new one, it's essential to fully remove the previous surface and start from the foundation. The site should be properly compacted using a roller, following the new construction specifications. It's not advisable to leave part of the old ground as a base and then build only half of the new structure. This can lead to cracks in the new plastic surface layer. The old court must be completely removed, and the base should be expanded to ensure stability before laying the new surface. Old asphalt and cement concrete courts should also be handled differently. For asphalt courts with significant cracking, the first step is to clean the joints thoroughly and fill them with bitumen mastic. Any severely damaged areas should be removed and replaced with fresh asphalt. After repairs, the surface should be cleaned, sprayed with a layer of tack oil, and then covered with a new layer of asphalt. For older cement concrete courts, all original expansion joints need to be removed, and debris should be cleared out before filling them with new joint materials. It’s recommended to apply a thin layer of asphalt binder over the entire surface of the old concrete court. A non-woven geotextile should be placed over the expansion joints to prevent cracks from reflecting up through the new asphalt layer. Finally, a layer of asphalt concrete is applied on top. If the old cement brick or concrete structure is less than 10cm thick, it's generally not advisable to use a paving method to install a new plastic basketball court. The existing structure is too weak and may cause cracks in the new surface. This issue has occurred frequently in the past, so it's better to consider full removal and reconstruction if the original base is too thin. Hydraulic Hinge For Cabinet,Precision Engineering dampers, door dampers，Short stroke dampers of hinge Foshan Nanhai Ranming Lijiali Hardware Co., Ltd , https://www.lijialihardware.com