Reliable Sealants & Membranes for Airtight, Watertight Building Envelopes

Shop Sto’s high-performance sealants and membrane systems designed for moisture control, air barrier integrity, and long-term durability in EIFS and rainscreen applications. These weatherproofing solutions are engineered for Atlantic Canada’s demanding conditions, ensuring that your cladding assemblies remain protected, efficient, and code-compliant.

From vapor-permeable fluid-applied barriers to flexible sealants and self-adhered detailing membranes, this collection covers everything you need to build airtight, watertight walls that meet Passive House and commercial energy codes.

Ready to safeguard your wall systems? Explore our full line of Sto sealants and membranes now.

  • Durable, weather-resistant sealants and waterproofing membranes
  • Airtight and watertight protection for EIFS and rainscreen facades
  • Compatible with insulation, cladding, and high-performance wall systems