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Liquid Applied Flashing

PLASTISEAL®
PUMMA EWM Flashing

A highly elastic, solvent-free PUMMA elastomeric waterproofing flashing membrane for vertical and horizontal details, delivering durable, chemical-resistant, seamless waterproofing in demanding roof, façade and traffic-exposed environments.

PlastiSeal® PUMMA EWM Flashing is a 100%-solids, two-component, highly elastic polyurethane–methyl methacrylate (PUMMA) waterproofing membrane designed for high-build vertical and horizontal flashing applications. The thixotropic roller- or trowel-applied formulation provides exceptional flexibility and crack resistance even at very low temperatures, while offering outstanding resistance to water migration, salts, fuels, oils, anti-freeze and chemicals.

Interior & Exterior
Solvent Free
Two Component

Features & Benefits

  • Elastomeric, High-Flexibility Membrane – Performs in cold climates and dynamic conditions
  • 100%-Solids & Solvent-Free – High-build film formation with no shrinkage
  • Thixotropic for Vertical Applications – Ideal for flashing, detailing and upstands
  • Rapid Curing & Fast Return to Service – Minimises downtime on live sites
  • Impermeable & Crack-Bridging – Prevents water migration through details
  • High Mechanical & Load-Bearing Strength – Suitable for trafficked zones
  • Abrasion & Impact Resistant – Long-term durability in harsh environments
  • Outstanding Chemical Resistance – Resists oils, fuels, salts and de-icing agents
  • Excellent Recoat Adhesion – Reliable integration in multi-layer systems
  • Weathering & Age Resistant – Long service life in exposed applications

Intended Uses

PlastiSeal PUMMA EWM Flashing is designed as a liquid-applied flashing and detail waterproofing membrane for vertical and horizontal surfaces, including:

Below-Grade & Containment

  • Planters, roof gardens, retaining walls
  • Paver systems & vegetated roofs
  • Dam structures, canals, reservoirs & tanks

Detail & Interface Waterproofing

  • Flashings, penetrations, window reveals
  • Gutters, downpipes & edge terminations
  • High-build vertical and corner applications

Trafficked & High-Performance Areas

  • Balconies, terraces & rooftop decks
  • Pedestrian walkways, bridges & pool decks
  • Parking decks, loading bays & heavy-duty areas
  • Stadiums, water parks & helipads

Specialty Applications

  • Under-tile waterproofing
  • Decorative waterproofing systems
  • Water features & fountains

Rooftop & General Waterproofing

  • Flat roof waterproofing systems
  • Highly detailed or complex roof geometries

Use with or without polyester fleece reinforcement, depending on design and performance requirements.

Waterproofing

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