The normal base for indoor games is concrete floors. At least 100mm of concrete is recommended (with safety margins you can increase this). According to Swedish building standards, the deviation must be a maximum of 5mm by 5m, which means a very even surface.
If you cast a new concrete sole, it is easy to cast in cable tubes, which go up where the lighting poles are.
For new concrete soles, we recommend that you keep track of the moisture of the concrete (and of course make sure to insulate with Styrofoam, drain properly, to prevent moist concrete soles, caused by the capillary forces).
If you choose to install underfloor heating / loops, you should pay attention that the loops end up at least 120mm below where the construction is. We have made installations where the floor heating is 100mm and we have used 90mm anchor bolts.
Note that the concrete must NOT be polished AND / OR treated (dust binding, for example) but must be a sluggish asphalt. If the concrete is apparently slippery, treatment (a primer that JuBo recommends that is carried out in a special way) is required so that the carpet does not slip and cause unwelcome bubbles / damage to the carpet.
The responsibility for the floor always lies with the customer, but if our installers find something strange, we always say yes and warn that the surface may cause problems.
In 2021, alternatives to those we recommend have emerged. Examples of these alternatives are and the experiences / views we have are: