Barrier Coat
A paint which has a shielding or blocking effect to isolate a contaminated surface such as nicotine staining, water staining etc. or to prevent tannic acid from hardwoods and bitumen-based coatings from bleeding through. See Block Coat
Basecoat
A term used to indicate the first coat of paint to be applied. This applies to all paint systems.
Batch
Finishing materials made at the same time to ensure consistency in quality.
Also includes batch to batch paints and wallpaper.
Batch Sampling and Numbers
Retained samples of products made, are kept for quality control purposes and identify the actual material and date of manufacture.
This can then be used as a batch to batch comparison
Bead Mill
A horizontal drum used for grinding/dispersing pigments.
(see Sand Mill, Roller Mill, Dyno Mill).