Fault: Insufficient ventilation
Episode: If the terrace is not well ventilated from below, waterlogging will form. This can lead to a variety of problems: floorboards can warp, screws can break and the durability of the wood is significantly reduced if it is not allowed to dry well again and again.
Solution: Plan ventilation profile at the edges of the terrace. Increase the construction height with pedestals or counter battens. Also plan joints with facings, if necessary use a perforated plate instead of floorboards. Do not fall below a distance of 1,5 cm to fixed structures (house wall, curbs). Water should be able to drain off the subfloor. This is possible with crushed stone, gravel and grit or a sufficient incline. Avoid water blockage: Create air space under the substructure with terrace pads so that water is not blocked in its flow direction.