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Related Companies & Divisions


Plastatech® Engineering, Ltd.'s products are used for single-ply roofing membranes, high-performance geomembranes, secondary containment, chemical holding basins, fuel tank crude oil storage, fish ponds and tanks, landfills and wastewater industrial lagoons.

Oscoda Plastics

Oscoda Plastics®, Inc. manufactures accessories for the Duro-Last Roofing System along with Protect-All® flooring and ProFlex® Vinyl Expansion Joints. Protect-All is a recycled flooring system that resists grease, fire, mildew and bacteria growth. Protect-All has no sealers or grout to maintain and repair; and provides comfort underfoot along with slip resistance. Protect-All flooring uses a specialized thermal fusion process that blends industrial strength vinyl, including recycled Duro-Last roofing material, together into one monolithic piece.


EXCEPTIONAL® Metals, a division of Duro-Last, manufactures high-quality metal products designed for use with any single-ply roofing system. Products include roof accessories, metal roof and wall systems, metal edge details, drainage systems, scuppers, collector boxes, pitch pans, and other custom fabricated products.

Tri-City Vinyl

Since 1976, Tri-City Vinyl, Inc. has been manufacturing pool and pond liners, pool covers (flat sheet and beaded), water tubes, and pillows as well as cistern liners. Over the years, Tri-City Vinyl, a division of Plastatech, has earned a reputation of excellence for fast turnaround time, a wide variety of designer patterns, precise craftsmanship, and competitive pricing.

Tip-Top Screw

TIP-TOP® Screw Manufacturing, Inc. manufactures roofing screws, concrete screws, heavy-duty fasteners, construction fasteners and insulation fasteners, as well as, plates for use with Duro-Last Roofing Systems.