Courts That Don’t Drain
The bitmac that is used for tennis courts will be 6mm in size and of an open texture (for the technically minded this is normally graded at 190 pen).
When the hot material is rolled, the thickness of the final playing surface is about an inch, with the grains of bitmac being only joined together where they actually touch each other. Therefore there is a “pore” or gap between these grains which allow the rain water to soak vertically down and drain away.
If a painter blocks up these “pores” or gaps in the surface, the court will not drain in that area, and because of the build up of the paint, will cause the surface to become slippery when wet- no amount of re-spraying will solve this problem!
