Our deep sump deck drain is engineered for placement in roof top recreational and parking decks where the Insulated Membrane Assembly (IRMA) method of waterproofing is used. It is fitted with an adjustable extension that allows it to precisely fit the thickness of roof membrane assemblies where recreational promenades are installed over layers of built up felt and asphalt. Protected by a 14" (355) diam. medium duty grate with combined flashing collar and clamp, this Duco coated cast iron drain will securely grip waterproofing membranes with puncturing for a leakproof installation and long service life. Its deep sump and large diameter will clear heavy runoff fast.
