One of the advantages of using MM6125 in a Protected Membrane Roof Assembly (PMR) is that once the membrane is installed owners and designers can take advantage of various ballast options (gravel, pavers and Garden Roof) to suit a specific projects needs. In fact, since MM6125 is keeping the structure watertight and monolithically applied directly to the deck, design professionals can combine ballast/assemblies with confidence knowing that drainage will occur at the deck level regardless of the transition between assemblies (i.e. gravel at the perimeter transitioning to a paver walkway that is separated from a vegetated space by a rock curb).

STONE BALLAST - Typically requires crushed, graded stone placed over a stone filter sheet, rolled out over the insulation. In the field of the roof, a minimum of 10 lbs./s.f. ballast is required, with 20 lbs./s.f. needed at perimeters and at large penetrations.

Note: Hydroflex 30 is a specially formulated heavy duty, rubberized asphalt, protection sheet with synthetic fiber reinforcement. Hydroflex 30 is specifically designed to be embedded into Hydrotech's Monolithic Membrane 6125 roofing and waterproofing membranes to provide protection from typical construction traffic. In high traffic areas where vehicular traffic is anticipated or extreme physical abuse is expected, additional protection may also be required for the membrane assembly.

For more information, please visit http://www.hydrotechusa.com/assemblies/roofing