APF VaporSolve® JOINT FILLER is a specially formulated, high- solids thixotropic epoxy paste, designed for use over concrete with high moisture levels for the purpose of isolating the concrete from moisture sensitive flooring. APF VaporSolve® JOINT FILLER is suitable for concrete substrates indicating up to 99% RH when measured in accordance with ASTM F2170. VaporSolve® JOINT FILLER is utilized to fill control/contraction and other non-moving joints with a material compatible with the APF VaporSolve and VaporSolve Ultra systems. If the concrete surface is known or suspected of having been treated with sodium or potassium silicate products, use of APF VaporSolve Primer is required.

APF VaporSolve® JOINT FILLER has been formulated for thixotropic viscosity yet excellent substrate wetting capabilities to promote penetration and adhesion. The special curing agent allows for adhesion to damp concrete. The product may be applied at temperatures between 65 - 85°F (18 - 30ºC). Available in Fast Cure.


  • Allows coating of high moisture content concrete substrates
  • Creates complete vapor reduction system with VaporSolve products
  • Superior adhesion to concrete


Supplied in complete A+B 0.75 gallon (32.84 L), 1.5 (5.68 L), and 3.0 gallon (11.36 L) total volume mixed units. Use only as complete mixed unit, do not break down into partial mixes.

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