waterproofing

verb

1. (form-of, gerund, participle, present)present participle and gerund of waterproof

noun

1. (countable, uncountable)The treatment of something to make it waterproof.
2. (countable, uncountable)A waterproof material.

   “One hundred thirty-one small, highly permeable masonry wall specimens built of concrete blocks or of bricks were treated with cement-water paints or with other waterproofings.”