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High-Build Coating (UHB)

Last updated: May 11, 2017

What Does High-Build Coating (UHB) Mean?

High-build coatings are coating materials formulated so that a single application can cover surfaces with relatively thick films that don’t sag or run. Typically, high-build film coating thickness, which ranges from 5 mils to about 30 mils, are thicker than those of common paints but thinner than coatings applied using trowels.

High-build coatings exhibit properties that enhance their surface protection capabilities.

High build coatings may also be known as ultra high build (UHB) coatings.


Corrosionpedia Explains High-Build Coating (UHB)

A high-build coatings’ formulation allows it to create 5 to 30 mil-thick films with just one or two coatings with superior surface protection properties compared to ordinary paints or coating materials that average from 3 mils to 5 mils thick.

The thick coating deposited per application is directly related to the high-build coatings’ higher percentage of solid content than ordinary paints. High-build coatings also generally have the following properties:

  • Resistance to water vapor permeability, which provides external surfaces with water-proofing protection, resistance to wind-driven rain and the effects of freeze-thaw cycles. This is beneficial because water can carry contaminants that lead to corrosion.
  • Better crack-bridging capability, which ensures adequate coverage of voids and other small surface imperfections that serve as entryways for water.
  • Better hiding properties even while the coating is still wet.
  • Gives floors an easy-to-maintain, durable, attractive, smooth but non-slip surface. Hides minor imperfections and is resistant to wear from heavy foot traffic.

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