Since 1931 DeWitt Products Company has been providing contractors and homeowners with the quality of products they demand.  We continue that tradition today with a complete line of roofing, waterproofing, asphalt, and cleaning solutions. 

Our commercial applications include the D-MAX SEAMLESS MEMBRANE® SYSTEM (DSMS) roofing, waterproofing and corrosion protection.

COVERTOP ADC can be used for low permeability at hazardous waste landfills or for a relatively high permeability at solid landfills, as a soil stabilizer to stop or prevent erosion, and will also absorb loose sand particles for dust control.

4SEASONS is a  liquid, rubberized, pourable filler used to fill cracks, potholes, and irregularities in asphalt & concrete pavement. For use by DOT’s, asphalt / seal coat companies, maintenance crews, business owners, homeowners, & do-it-yourselfers!