Childers CP-34 Vapor Retardant Coating

Childers CP-34 is a water based vapor retarder coating for use over many types of thermal insulation including polystyrene foam. It is ideal for use over ASJ, FRK and FSK jackets and board facings to provide a vapor retarding seal at joints, laps and weld pin punctures.

Product Description

CP-34 is formulated for indoor and outdoor commercial use as a vapor retardant coating. It has a mild latex “paint type” odor and is designed for use on pipes, vessels, ducts and equipment operating between 32°F (0°C) and ambient temperatures. CP-34 has a WVTR rating in the range of other competitive water based vapor barrier coatings. For heavier duty commercial or industrial use select Childers CP-35.


  • Meets NFPA Standard 90-A and 90-B 25/50 requirements when used to seal seams and punctures in vapor barrier facings and jacketing.
  • This product has been tested according to ASTM E-84 (Surface Burning Characteristics of Building Materials).
  • Meets low VOC standards including:
    • LEED for Schools 2009 IEQ Credit 4.2
    • LEED for New Construction, IEQ Credit 4.2
    • California Dept of Public Health (CDPH) Standard Method Ver. 1.1, 2010 Small Scale Environmental Chamber Test for VOCs. for CA Specification 01350
    • Green Guide for Health Care EQ Credit 4.2
    • Collaborative for High Performance Schools (CHPS) EQ Credit 2.2
  • VOC: 38 g/l, less water and exempt solvent

Childers CP-34 Vapor Retardant Coating Data Sheet

Childers CP-34 Vapor Retardant Coating Safety Data Sheet