salastusavade

Salastusavade refers to seals and sealant systems used to close openings and joints in built structures and mechanical assemblies. The term encompasses both the materials (sealants and foams) and the techniques applied to create an airtight, watertight and weatherproof barrier while allowing for some structural movement. Salastusavade are commonly used around windows and doors, pipe penetrations, expansion joints, roof detailing and other facade or interior connections where air, moisture or sound must be controlled.

Common materials include silicone-based sealants, polyurethane foam sealants, acrylic latex sealants, and polysulfide sealants. Silicone sealants are widely used for exterior applications due to their durability and UV resistance, while polyurethane foams provide bulk sealing around larger openings. Acrylic sealants are often chosen for interior joints that require paintability. Selection depends on substrate compatibility, exposure to weather, movement tolerance, and curing characteristics. Sealant joints are designed with appropriate width and depth to accommodate anticipated movement, typically expressed as a movement capability percentage.

Application involves proper surface preparation, including cleaning and drying, and often priming of porous substrates. The joint design and tool finishes influence long-term performance. Curing times vary by material and environmental conditions and are followed by inspection and maintenance, with re-sealing recommended in cases of cracking, loss of adhesion or degraded sealants.

Salastusavade are governed by national and European standards that address adhesion, elasticity, weather resistance and safety. They play a central role in energy efficiency, moisture management and building longevity.