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Spencer Coatings Comastic

Spencer Coatings Comastic

Spencer Coatings Comastic

No longer manufactured.


A high build single pack, moisture repellent anti corrosive coating for application to boat or steelwork in a marine environment. A special selected vinyl resin formulated with coal tar pitch and a range of additives gives a thixotropic flexible coating.

Widely regarded as the best quality single pack hull blacking product available.

Key features are...
  • Long overcoating interval
  • Ease of application even in low temperatures
  • High build to reduce application time and cost
  • Good performance in combination with cathodic protection
  • Easily overcoated with conventional and high performance antifoulings
  • Good water, humidity and temperature resistance

Due to Health and Safety legislation governing these products they are classed as 'Professional Use Only'

SHOULD NOT BE APPLIED OVER SURFACES PREVIOUSLY PAINTED BITUMEN BASED PRODUCTS

Intended Use: Professional Only.

Product Datasheet

KARMA VT Vinyl Tar Hull Blacking 5lt

KARMA VT Vinyl Tar Hull Blacking 5lt


Price: 89.95 (107.94 Including VAT at 20%)


Karma VT - a single pack, easy to apply hull blacking with the highest level of chemical acid and alkali resistance available to steel boat owners.

Formulated using a special combination medium with coal tar pitch to give a high build, moisture repellent, anti-corrosive coating with a pleasant light sheen,

We have secured sufficient raw materials to enable supply of Karma VT, right up to the Jan 2019 Coal Tar ban.

Key Features

  • Long term protection for steel and concrete
  • Abrasion resistant
  • Flexible
  • Excellent oil and diesel resistance
  • Single pack - no pot life issues
  • Easy to apply by brush or roller
  • Suitable for fresh or salt water use

Application: new work - 3 coats, 1-2 coats on refurbishment.

Suitable for overcoating existing single pack or two pack (epoxy) VT Coal tar products only. Don not apply over bitumen based coatings.

Thinner: No. 4 (Xylene).

Intended Use: Professional Only.


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