Glossary

B

Barrier Coat
A coating used to isolate a paint system either from the surface to which it is applied or a previous coating for the purpose of increasing adhesion or insuring compatibility.

Binder
The nonvolatile portion of the vehicle of a coating which holds together the pigment particles.

BITUMASTIC®
BITUMASTIC® is a century + year old trade name that has now become synonymous with coatings made from coal tars and blends of resins, such as epoxy. These products have been used to line water tanks, sewage tanks, coat the interior and exterior of buried pipe and for protection of equipment subjected to water immersion.

Bituminous Coating
A coal tar or asphalt based coating material usually used in thick films.

Blast Cleaning
The cleaning and roughing of a surface by the use of sand, artificial grit or fine metal shot, which is projected at a surface by compressed air or mechanical means. See SSPC.

Blast Profile
See anchor pattern. A cross sectional view of an abrasive blasted surface.

Bleaching
The fading of a color toward white generally caused by exposure to chemicals or ultraviolet degradation.

Bleeding
The diffusion of color matter through a coating from underlying surfaces causing color change.

Blistering
The formation of blisters in toppings or coatings by the local loss of adhesion and lifting of the film from the underlying substrate. On concrete surfaces, this is often caused by moisture vapor transmission problems.

Blooming
A haziness that develops on coated surfaces caused by the exudation of a component of the coating.

Blushing
A film defect which manifests itself as a milky appearance which is generally caused by rapid solvent evaporation or the reaction of the amine component of the coating to the presence of excessive moisture during the curing process. Also, “Amine Blush.” Common in some epoxy systems.

Bonding
The attachment between a coating film and the underling material to which it is applied.

Bonding Agent
Material used to increase adherence of coatings or toppings to the existing surface. Also the agent used to bond new concrete to old. May be an acrylic latex, epoxy, polyurethane or other type of adhesive. See “Primer.”

Bounce Back
The rebound of atomized paint from the surface to which it is being applied, especially when applied by conventional air spray methods.

Boxing
Mixing of coatings by pouring from one container to another.

Bridging
The formation of a coating over a depression or crack.

Brittleness
The lack of resistance to cracking or breaking of a paint film when bent or flexed.

Broken Marble
Fractured slabs of marble (not crushed by machines into chips). See "Palladiana"

Brushability
The ease of applying a coating by brush.

Bubbling
A temporary or permanent film defect in which bubbles of air or solvent vapor are present in the applied film.

Build
The wet or dry thickness of a coating film.