Insulating flue sig to subsequent isolation of masonry resistance against ascending flue sig

摘要

A liquid for waterproofing a masonry structure contains 20-50% of a diisocyanate and to-50% of a solvent mixture consisting of 40-60% of ethylene glycol monoethyl ether acetate or methylisobutylketone and 60-40% of toluene, all percentages being by weight.