Sikalastic® M 689 (formerly known as MasterSeal® M 689)

A high elastic, ultra-fast curing, spray applied 100% polyurea membrane for use in waterproofing applications


MasterSeal M 689 is a solvent free, two component water- proofing membrane. It is highly reactive and can only be applied by special two component hot spray equipment.

FIELDS OF APPLICATION


MasterSeal M 689 is used in a variety of waterproofing applications, especially where a high degree of chemical and mechanical resistance is required. Easy application to complicated details.

This includes:

  • Wastewater treatment plants (urban and industrial), both in the inflow and outflow areas.
  • Sewage effluent pipelines.
  • Steel and concrete pipes.
  • Secondary containment bunds in chemical and petrochemical industries.

Additionally, MasterSeal M 689 can be applied on:

  • Flat and architectural roofs.
  • Horizontal and vertical substrates.
  • Internal and external areas.
  • Concrete, cementitious mortar or steel substrates.
  • Reinforced concrete to protect it against carbonation, chloride induced corrosion or chemical attack in industrial environments.
  • Contact your local Master Builders Solutions representative regarding any application required not mentioned here.

FEATURES AND BENEFITS


Spray delivered and ultra fast curing: enables easy application to form a monolithic waterproofing membrane on simple and complex surfaces.

  • Application to vertical surface without runs.
  • Easy application to complicated details

Rapid curing:

  • Rain resistance after only 30 seconds.
  • Allows early serviceability
  • Fully trafficable after only 12 hours

Continuous membrane: monolithic – no laps, welds, or seams

Excellent chemical resistance.

Waterproof and resistant to standing water.

Fully bonded to substrate: can be applied to a wide range of substrates with the appropriate primer.

High water vapour permeability: low risk of blistering.

High resistance to carbon dioxide diffusion: Protects concrete from rebar corrosion.

High abrasion and impact resistance: Withstand mechanical traffic.

High elasticity and crack bridging capability:

  • Remains elastic at low temperatures; Tg approx. – 45 °C
  • High durability and protection with reduced cracking due to embrittlement

Thermoset – does not soften at high temperatures.

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