To waterproof cement boards, a liquid waterproofing material is applied over its surface.

All joints were filled with waterproof cement.

It used stone arches and waterproof cement.

Uncovering the buried city on Santorini was first stimulated in the 1860's when it was found that the ash made ideal waterproof cement.

Waterproof cement (on coping)

This technique, in which pigment is mixed with the plaster (left half of the picture), can also be used with waterproof cement for countertops, floors and shower stalls (right half).

I descended to a new level: I lived and breathed a gray, cake-batterlike product known as Thoroseal, a waterproof cement that I applied with a spatula to the Pit's vulnerable aperatures.

A mixture of PbO with glycerine sets to a hard, waterproof cement that has been used to join the flat glass sides and bottoms of aquaria, and was also once used to seal glass panels in window frames.