Carboline Bitumastic 50 coat tar coating MIL-C-18480-B

Carboline Bitumastic 50 Coal Tar Coating

by Carboline

$248.17 - $854.55

$248.17

$248.17 - $854.55

$248.17

Bitumastic 50 is an ultra-high build, single-component coal tar mastic manufactured by Carboline. It’s designed for heavy-duty corrosion protection of steel and concrete substrates in aggressive environments and for below-grade damp proofing, providing excellent resistance to moisture, soil, and chemical exposure.

This coating is black in color and has a solids content of 68% ± 2% by volume and can be applied in one or two coats with a dry film thickness of 18 mils (457 microns), up to 30 mils (750 microns) in a single coat. It’s self-priming with single-coat capabilities and complies with standards such as MIL-C-18480-B and Bureau of Reclamation CA50.

Bitumastic 50 PDS Sheet >

Bitumastic 50 is used in harsh industrial, civil, and buried applications where steel or concrete requires robust protection from corrosion, abrasion, and immersion up to 120°F (49°C). Common applications include:

Below-Grade Structures: Damp proofing for foundations, retaining walls, basements, and buried concrete/steel elements exposed to soil moisture and aggressive groundwater.
Pipelines and Tanks: Interior and exterior linings for underground pipelines, storage tanks, and vaults in petroleum, chemical, or wastewater systems.
Wastewater Treatment Plants: Coating for concrete manholes, sumps, channels, and steel supports in areas subject to sewage, effluents, and corrosive fumes.
Civil Engineering Projects: Protection for dams, bridges, and reclamation structures per Bureau of Reclamation specs, including submerged steel piles and concrete surfaces.
Industrial Facilities: Maintenance coating for machinery bases, equipment supports, and floors in refineries, chemical plants, or manufacturing sites with soil or chemical contact.
Military and Marine Installations: Corrosion barrier for buried or semi-buried steel components in non-potable immersion service, compliant with MIL-C-18480-B.

Find the entire collection of Carboline Products Here >

BITUMASTIC 50M IS AVAILABLE IN 1 AND 5-GALLON UNITS, SINGLE-COMPONENT COATING

If your project needs a different Carboline coating product, feel free to contact our customer support team.

Contact our customer support today to discuss your project:
(800) 567-5358

Quantity

PRODUCT SPECS

Bitumastic 50 - Ultra-high build, single-component coal tar mastic for protecting steel and concrete substrates subject to aggressive conditions and for below grade damp proofing requirement
Product Data Sheet >
SDS >

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Bitumastic 50 by CARBOLINE

Name: Carboline Bitumastic 50 Coal Tar Coating
Brand: Carboline
SKU: CL-50-1G
Price: 248.17 USD
Availability: InStock

SHIPPING TIME

Call (800) 567-5358 for pricing and logistics questions

All Carboline orders ship from one of the many regional warehouses depending on which location is closest. Each regional warehouse keeps a full stock of industrial performance coating products are maintained.

Most orders ship out 2-3 business days following the order depending on stock levels. Delivery times shown on the shipping map are typical, though not guaranteed.

SHIPPING MAP

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COVERAGE RATES

18 mils (457 microns) one or two coats

Do not exceed 30 mils (750 microns) in a single coat.

61 SF/gal at 18.0 mils (1.5 ms/l at 450 microns)
1,091 SF/gal at 1.0 mils (26.8 ms/l at 25 microns)

Solids Content: By Volume 68% +/-2%

Allow for loss in mixing and application

Total dry film thickness less than 12 mils (300 microns) or in excess of 30 mils (750 microns) not recommended.

UNIQUE FEATURES

The following are unique features of the Bitumastic 50 product. It is a verstile coating and the following may help specifiers and applicators.

Do not use for potable water requirements.
Immersion temperature should not exceed 120 °F (49 °C).
Backfilling/Burial: May be started 7 days after the final coat is applied, providing the surface temperature has remained above 60°F (16°C). These times are based on an 18.0 mil (450 micron) dry film thickness. Higher film thicknesses, insufficient ventilation, high humidity or cooler temperatures will require longer cure times.
NOTE: Bitumastic 50 is a self-healing coating and is designed to remain soft.

LIMITATIONS

Shelf Life: Min. 24 months at 75°F (24°C)

Warning: Vapors may cause explosion. When used in enclosed areas, thorough air circulation must be used during and after application until the coating is cured.

This product contains flammable solvents. Keep away from sparks and open flames. All electrical equipment and installations should be made and grounded in accordance with the National Electric Code. In areas where explosion hazards exist, workers should be required to use non-ferrous tools and wear conductive and non-sparking shoes.