Liquid window film SP925 is a highly flexible coating based on polymer in hybrid. It is designed for vapor-tight insulation, i.e. that inhibits the passage of air as a carrier of water vapor. It is a good replacement for butyl films, which are always used together with primers, which is an additional complication.

properties

• optimal coating viscosity for precise material treatment on an uneven surface and around joints
• works wherever air and steam insulation is required
• does not contain solvent or isocyanate (GEV-EMICODE certificate with the highest safety class EC1 Plus)
• creates a permanently flexible film on most typical building substrates
• created for passive buildings in which tightness tests are carried out using the Blower-Door method
• tested in accordance with ift-Rosenheim MO-01/1 guidelines for use as a liquid window membrane used from inside the window joint
• effectively seals complicated joints where the problem is the use of foil requiring a leveled and primed substrate
• white and anthracite (RAL 7016) available

Technical data

• hybrid polymer base
• density (according to DIN 52 451-A) 1.3 g / cm
• Shore-A hardness (according to DIN 53 505) 30
• technological viscosity (according to EN 27 390) resistant
• coating time (at 23 C / 50% relative humidity) approx. 20 min
• cross hardenability (at 23 C / 50% relative humidity) approx. 2.2 mm / 1 day
• non-sticky (at 23 C / 50% relative humidity) approx. 20-30 min
• volume loss (according to DIN 52 451) 3%
• stress expansion value (at 100% expansion; according to EN 53 504 S2) approx. 0.8 N / mm
• tensile strength (according to EN 53 504 S2) approx. 0.6 N / mm
• elongation at break (according to EN 53 504 S2) approx. 360%
• water vapor permeability (according to DIN EN ISO 12572) μ = 1476
• temperature resistance from -40 C to +90 C
• application temperature from +5 C to +40 C
• storage in a dry place and in closed original packaging between +5 C and +25 C
• storage period of 12 months
• packaging 600 ml plastic bag

By spraying (with a pressure gun) or mechanical application of the mass to the surface, a seamless, chemically neutral and almost odorless membrane with high mechanical strength is created. High flexibility works in the case of movement in thermal and structural elements in construction, thanks to which the seal continuity of the coated surface does not break, masking minor scratches and cracks.