Siplast's premium liquid-applied PMMA-based Parapro and Terapro Systems provide our highest level of waterproofing and concrete protection for roofing, vegetated roof, parking decks and ramps, pedestrian walkways, balconies, and vehicular traffic applications.

Poly(methyl methacrylate) (PMMA) is a synthetic polymer derived from methyl methacrylate. It is a transparent thermoplastic, used as an engineering plastic. PMMA is also known as acrylic, acrylic glass, as well as by the trade names and brands Crylux, Hesalite, Plexiglas, Acrylite, Lucite, and Perspex, among several others .

The JM PMMA Liquid Membrane and Flashing System consists of a two-component, fast-curing, polymethyl-methacrylate (PMMA) resin and a non-woven, chopped strand fabric reinforcement. The system provides an elastomeric, monolithic roofing and waterprooing membrane ideal for plaza decks, balconies, garden roofs, or as a stand-alone membrane.

Use JM PMMA Flashing Resin with JM PMMA Catalyst and JM PMMA Scrim to form a monolithic, self-reinforced flashing membrane for penetrations and a variety of other details.

Our liquid-applied systems provide seamless waterproof membranes that are easily applied and conform to any penetration shape. This system is ideal when faced with a confined urban space, numerous roof penetrations or restricted use of hot asphalt or heat welding.

View our PMMA Liquid-Applied Roof Systems and Flashing system. These solutions can be used for commercial roofing, waterproofing, and vegetated roof assemblies.

Sika’s Liquid Flashing for thermoplastic roofing membranes is a white, two-component polymethyl methacrylate-based (PMMA) material for use on Sarnafil® and Sikaplan® PVC membranes for roofing detailing.

PMMA-Based Industrial Waterproofing Coating is a solvent-free, rapid-curing and highly flexible liquid applied membrane system. It delivers durable, long-term waterproofing and corrosion protection and is hard dry in just 60 minutes * (see Key Technical Data).

Liquid PMMA is a seamless, fully reinforced waterproofing system that can be used in conjunction with SBS membranes, as a stand-alone alternative to more traditional roofing plies, LEED applications, or for waterproofing challenging vegetated roof systems.

Once catalyzed, our PMMA resins start to cure into a flexible, high-performance liquid-applied membranes and flashings. Terapro Base Resin is used in field membrane applications for both pedestrian and vehicular projects.