What is "waterproofing"

Waterproofing \Wa"ter*proof`ing\, n.

1. The act or process of making waterproof.

2. Same as Waterproof, n., 1.

n. 1 The treatment of something to make it waterproof. 2 A waterproof material. vb. (present participle of waterproof English)

1. n. the act of treating something to make it repel water [syn: sealing]

2. a coating capable of making a surface waterproof

Waterproofing is the process of making an object or structure waterproof or water-resistant, so that it remains relatively unaffected by water or resisting the ingress of water under specified conditions. Such items may be used in wet environments or under water to specified depths.

"Water resistant" and "waterproof" often refer to penetration of water in its liquid state and possibly under pressure, whereas damp proof refers to resistance to humidity or dampness. Permeation of water vapour through a material or structure is reported as a water vapour transmission rate.

The hulls of boats and ships were once waterproofed by applying tar or pitch. Modern items may be waterproofed by applying water-repellent coatings or by sealing seams with gaskets or o-rings.

Waterproofing is used in reference to building structures (such as basements, decks or wet areas), watercraft, canvas, clothing ( raincoats or waders), electronic devices and paper packaging (such as milk and juice cartons).