Nitoseal 118 is a one part, gun applied, moisture activated polyurethane sealant. After application a skin forms rapidly leaving the body of the sealant to cure more gradually, the rate being dependent upon temperature, humidity and dimensions of seal.
During the curing period, one part polyurethane sealants will accept limited movement normally associated with the applications described. Full cured sealant is capable of dynamic joint movement totalling 50% of original joint geometry (± 25%).
For joints where significant early cyclic movements can be anticipated, two part sealants should be used. Pleas contact your local Fosroc representative for specific requirements.