Neutralising

Counteracting acids or alkalis left on a surface after pre-treatment or originating from building materials.


Newel Post

The end vertical posts to a staircase


Nibs:

Small pieces of material such as dry paint skin or coagulated binder which give a course finish, (see Bittiness).


Non-Convertible Coating:

A paint film which although dry is soluble when in contact with the solvent which was contained in the original product e.g. chlorinated rubber.


Non-Drying Oil

One which when exposed to the air has no or little drying properties.


Non-Ferrous

Metals such as zinc and copper which contain no iron.


Non-Volatile

The portion of a paint which is left after the evaporation of the solvents.


Nozzle

Fitted to either sandblast or spray gun equipment, (see Orifice).


Obliteration

The degree to which a paint coating covers the underlying surface, (see opacity).


Ochre

An iron oxide yellow pigment