Fixed height supports are mainly used to ventilate the slab, protect the waterproofing membrane by distributing the load over an adequate surface area, make the waterproofing system easy to inspect and repair, and make it safe to walk on without overloading the existing slab. The circular shape also adapts perfectly to irregular laying surfaces and, for some, the body can be divided into two or four parts to be used along walls or next to corners. Some models are perfectly flat, such as the Elastic and Mini Elastic, while others have four spacer tabs on the upper part to create the joint.

Fixed height supports are mainly used to ventilate the slab, protect the waterproofing membrane by distributing the load over an adequate surface area, make the waterproofing system easy to inspect and repair, and make it safe to walk on without overloading the existing slab. The circular shape also adapts perfectly to irregular laying surfaces and, for some, the body can...