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