The Outdoor Basketball Court floor is intended to be installed over concrete or other hard surfaces, including our basketball paver base. It is not advised to install this product over grass, mulch, or other soft surfaces. The Perforated tile used to create this basketball court floor is manufactured with high-impact polypropylene, making the product rigid, firm, and strong enough to ... https://modutile.com/product/outdoor-basketball-court-floor-20x24-kit/