Bostik Smartflex PU is a low modulus, one component,
Class-B polyurethane sealant. When cured it will form a
tough, flexible seal capable of cyclic expansion and
compression movement of 50% (+ 25%) of the original
installed joint width.
It has excellent resistance to normal weathering
conditions such as rain, sunlight, snow, sleet, ozone,
atmospheric contamination and pollution.