TYPAR Professional Landscape Fabric used in landscaped beds, under decks, behind retaining walls, in trench drains, beneath brick or block walks and patios, or as planter/pot liners lets plants breathe while it blocks troublesome weeds and allows drainage without soil loss. Nonwoven spunbonded polypropylene with UV. inhibitors resists rot, mold, chemicals, microorganisms, and punctures by most vegetation. Also withstands stress and damage during construction and in long-term use. Heavier-duty grades recommended for use under stone. Installs quickly even over existing plantings; simply roll out fabric and cut to fit, then cover completely with mulch or aggregate.