Exposed concrete does not require a choice between reliable waterproofing and a refined architectural finish. A coordinated coating system can preserve the performance of the waterproofing assembly while adding durable, intentional color to visible surfaces. 

Industrial waterproofing projects require a specialized coating system to meet specific coating specifications. The size and scope of work will influence the application method of these coatings. 

For this discussion, we will review factors to consider when spray-applying waterproof coatings on large-scale projects and the types of spray equipment needed to apply waterproofing materials. Projects with an abundance of vertical walls, overhead surfaces, and minimal risk for overspray are generally excellent candidates for utilizing spray equipment.  

Typically, the spray equipment used for waterproofing products can be classified as airless, air-assisted airless, or plural component spray equipment. Always use equipment recommended by the waterproofing material manufacturer.

With many varieties of elastomeric coatings on the market, it should be no surprise that there are many different application methods to consider. So, how do you choose the best plan for your next project? 

This article will focus on polyurethane, cold, fluid-applied, elastomeric waterproofing coatings. These products can be hand-applied using a brush, roller, or squeegee or with specialized spray equipment. The application method is often predicated by project conditions that influence the contractor's ability to apply the material as a uniform coating at the required thickness.