What's the plural form of waterproofing? Here's the word you're looking for.
Answer
The noun waterproofing can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be waterproofing.
However, in more specific contexts, the plural form can also be waterproofings e.g. in reference to various types of waterproofings
or a collection of waterproofings.
