Bitumen Paint (Bituminous Paint and Coatings)

Solvent-based and water-based bituminous coatings for waterproofing, steel and concrete, in pails and drums

Bitumen paint, also called bituminous paint or black bitumen paint, is bitumen made liquid so that it can be brushed, rolled or sprayed cold and left to dry to a black, waterproof film. There are two kinds. Solvent-based bitumen paint is bitumen dissolved in a petroleum solvent, usually white spirit; the solvent evaporates and leaves the film. Water-based bituminous coating is a bitumen emulsion, often rubber-modified, that dries as the water leaves and can go on damp concrete and in closed spaces where solvent vapour is not acceptable. The British standards for the solvent-borne kind are a pair. BS 6949:1991 covers bitumen-based coatings for cold application that will not be in contact with potable water, and BS 3416:1991 covers those suitable for drinking-water tanks and cisterns; each has two types with three classes, and both are current. Water-based coatings are sold to other specifications; one Gulf producer's rubberised emulsion is made to ASTM D1227 Type III Class 1. The uses are the waterproofing and protection of steel, iron, concrete, masonry, fibre cement and timber: tanks, gutters, railings and structural steel, the buried faces of foundations and retaining walls, tanking of below-ground concrete, and damp-proof coats under screeds.

Coverage depends on the surface. One solvent-based product sheet gives 4 to 6 m² per litre on porous substrates and 11 m² per litre on non-porous surfaces, at a specific gravity of 0.9 and a flash point of 40 °C, touch-dry in 4 to 6 hours, with at least two coats and 2 to 4 hours between them. A rubberised emulsion sheet gives 2 to 4 m² per litre per coat at about 40 per cent solids and a density of 1.02 g/cm³, with 48 hours of curing before backfilling. Solvent-based paint does not resist oils and solvents and is not used in drinking-water tanks unless it is certified to BS 3416. Packs run from 1, 2.5 and 5 litre tins to 20 and 25 litre pails and 200 litre drums, and the solvent-based grades ship as flammable liquids. Bituminous mixtures such as cut-backs and emulsions are declared under HS 2715.00; the code is confirmed against the destination tariff before shipment. CBIL brokers bitumen paint between a named manufacturer and a named buyer, against the manufacturer's technical data sheet, safety data sheet and batch certificate and SGS or Intertek inspection at loading, in pails and drums by the container on FOB, CFR and CIF terms. Send the type, the standard, the pack size and the volume.

See also: Oxidized bitumen: the roofing and waterproofing binder · Bitumen emulsion: the road grades · White spirit: the solvent in bitumen paint

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Excluded origins are not offered, including product re-exported, blended or re-processed through a third country. Every lot moves with a certificate of origin naming the producing plant, mine or grower country, and nothing is quoted before the seller and loading point are known.