Modern building facades face relentless stress. Thermal cycling, wind load, structural settlement, and seismic movement all open and close joints hundreds of times over a building’s lifespan. Simflex Facade addresses that reality directly. Its ±50% movement capability is a tested performance specification not a marketing claim and it separates this product from standard sealants that crack and debond when buildings move.
What ±50% Movement Capability Actually Means
Most commercial sealants carry a ±12.5% to ±25% movement rating. That is adequate for stable interiors, but insufficient for external facade joints under temperature swings and structural flex. Simflex Facade’s ±50% rating means the product handles joints that compress or extend by up to half their designed width without adhesion failure or cohesive splitting. For a 20mm joint, that translates to 10mm of movement in either direction. High rise and curtain wall applications demand exactly this standard.
MS Polymer technology makes this possible. It combines the elastomeric recovery of silicone with the substrate adhesion of polyurethane while avoiding the UV degradation and oil leaching that limits each technology on its own.
MS Polymer Technology: The Engineering Behind the Performance
MS Polymer creates a molecular structure that stays flexible across a wide temperature range. This matters enormously in Australia, where facade surfaces can swing from below 5°C overnight to above 70°C surface temperature on a summer afternoon. Furthermore, MS Polymer avoids isocyanate crosslinkers entirely. As a result, it cures without sensitivity to moisture so it won’t bubble when workers apply it in humid or damp conditions. That bubbling failure mode is common with polyurethane sealants on coastal and high humidity sites.
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PRODUCT SPOTLIGHT: Simflex Facade MS Polymer Facade Sealant ±50% movement capability tested, not estimated MS Polymer chemistry no bubbling in humid or damp conditions Bonds to porous substrates without primer in most applications Matte finish with low static charge reduced dirt pickup on facades Silicone oil free no staining on natural stone or adjacent materials |
Adhesion to Porous Substrates
Simflex Facade bonds to porous materials without a primer in most conditions. Concrete, fibre cement, AAC, and masonry all present adhesion challenges for standard sealants especially when workers haven’t perfectly prepared the surface. Simflex Facade handles these substrates reliably. This reduces adhesion failure risk due to porosity and cuts application time on complex facades. However, for specialist applications natural stone, some coated metals, and powder coated aluminium a compatibility test or primer remains advisable. Simseal’s technical team provides substrate specific guidance for any project.
Matte Finish and Low Static Charge: The Aesthetic Dividend
Many high performance sealants deliver technically but fail visually. Glossy beads attract dust and discolour within months of application. Simflex Facade’s matte finish reduces static charge at the surface. This directly minimises the adhesion of airborne dust and particulates. In Australia’s high dust urban environments, that translates to lower maintenance costs and a cleaner building appearance across its service life.
➤ External reference: Standards Australia AS 4000 and construction product standards
Specifying Simflex Facade on Your Next Project
Simseal stocks and supports Simflex Facade through its national distribution network. For large scale commercial and facade projects, the Simseal technical team provides specifsimication support, substrate compatibility confirmation, and on site technical assistance.
Request a technical data sheet →
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