The PERMA-SNOW™ ski slope system consists of a ski carpet attached to a base layer that is a resilient permeable shock absorbing blanket of Enkadrain or a similar material laid and fixed to a finished and levelled surface. The prepared surface of the ski mound or natural geological hill should consist of compacted gravel or other permeable granular material. The granular material should be spread over an underlay of Terram or other permeable earth containing fabric used in the construction industry. An earth containing underlay will substantially prevent the possibility of mud in wet conditions invading the skiing surface.

The construction of the ski slope should be engineered to provide carrier drains with herring bone branches laid in the ground beneath the earth retaining underlay and granular bed. It is further recommended that the granular bed is overlaid with a UV resistant fabric covering before laying the shock absorbing base and skiing surface. This method of construction gives extra protection against any granular material interfering with the resilience of the base fabric. The permeability of the base fabric (Enkadrain or a similar product) will shed water in extreme conditions and the permeable underlay will allow any excess rainwater to drain away to the surface water sewage system.