In case of Loosely Laid Systems, the single ply PVC membrane is secured against wind uplift by means of ballast (concrete mortar screed, concrete tiles, soil, etc.). Loosely Laid Systems are extremely fast to install and the installation is almost independent to weather conditions. Loosely Laid Systems do not require any penetrations into the roof substrates. Loosely Laid Systems are ideal for accessible roofs (functional decks).
