Everbuild floor flex plus latex everbuild lat5 floor flex plus is a premium rubber based latex additive for use with self level floor compound and powder tile adhesives to both strengthen the mix and provide a limited degree of movement capability in the sub floor ideal for use when covering sound timber floors a 5 litre container is sufficient to mix a 20 kilo bag of self level floor compound or adhesive everbuild lat5 floor flex plus latex 5 litre