Vapor Retarder Primer TA

Solvent-based bitumen primer

Vapor Retarder Primer TA is a blend of bitumen and solvents used on concrete decks and approved primed gypsum board prior to applying Sika’s torch-applied vapor retarders. The primer improves the attachment of Sika’s torch-applied vapor retarders to the properly prepared and dry concrete surface. It is also used to prime concrete decks prior to the application of hot asphalt for Sika’s ply sheets.

  • Enhanced adhesion strength between primed substrates and Sika’s torch-applied vapor retarders or hot asphalt.