When it comes to outdoor courts, there are two solutions;

SoftBase which is an asphalt surface (draining) with a concrete frame around (where the construction is screwed). Inside the frame, drainage work is carried out, macadam is laid to finish with 4-7 cm of asphalt.

HardBase which is a concrete sole, which is cast and which is similar to the same surface / foundation that is most common indoors.

The SoftBase is gentler for  the players and NOT least it ensures that the rain disappears from the course in the shortest possible time (more games - more revenue). Note that in warmer countries (with temperatures above 35 degrees for a while) we do not recommend SoftBase.

The hard base needs to be made with falls, so that the water can get out of the track. The HardBase gives a feeling more like the indoor track, as both have concrete.

As a third alternative, a hard-packed base of stone flour is mentioned, and it is an alternative that we can not recommend as we have bad experience of just that type of solution. But with guarantees from the person who does it, this should be feasible, and what contributes to the interest in this solution is that it is cheaper.

In 2021, alternatives to those we recommend have emerged. Examples of these alternatives are and the experiences / views we have are:

1.  Just asphalt. Does not work, as the wind loads are too large. Here, a portable solution with solid support legs is then recommended to withstand the wind loads.

• Asphalt/concrete (hybrid). Unfortunately, this is not enough, also with reference to the wind loads. The net posts must, if the customer still insists on this solution, be anchored in concrete foundations (cut up the asphalt, dig out, reinforce and cast concrete) for the forces to tension the net place high demands on the anchorage of the net posts. Of course, in the same way as asphalt, a portable solution can be made and will then be a better solution than with just asphalt (it is possible to bolt in the asphalt concrete, which makes it more difficult for the structure to move).
• Concrete foundation (beams or made on site) with asphalt at the top (40-60mm). Made to save money and get a smoother asphalt, BUT helps to create a soft layer of asphalt between hard concrete and the iron (construction). This means that, in the long run, there is a great risk of unwelcome movements in the construction that can make up for it even with the durability of glass. In addition to the fact that it requires longer bolts (we at JuBo credit the cost of our normal anchor bolts, and the customer is responsible for obtaining the "right bolts" and possibly hats for these or painting the heads on the bolts). JuBo charges for the additional cost of putting these longer bolts and any extra work with hats / painting (time required) and requires a disclaimer on damage to construction / glass caused by this solution. To stabilize the asphalt, Densiphalt can be used, which binds the asphalt and makes it harder. However, the same disclaimer applies.