Davco Lanko 136 Rapid Patching Mortar is already-to-use polymer-modified rapid-setting mortar designed for making repairs to concrete and masonry surfaces both externally and internally. It is for use before the application of underlayments, flooring, ceramic tiles, coatings or paint etc. Lanko 136 Rapid Patching Mortar has been designed to achieve very high early strengths and can accept floor finishes after as little as 90 minutes.Davco Lanko 136 Rapid Patching Mortar is already-to-use polymer-modified rapid setting mortarDesigned for making repairs to concrete and masonry surfaces both externally and internallyIt is for use before the application of underlayments, flooring, ceramic tiles, coatings paint etc.,Davco Lanko 136 Rapid Patching Mortar is already-to-use polymer-modified rapid-setting mortar