DAP® Weldwood® nonflammable contact cement is a high solids polychloroprene-based, waterborne contact adhesive that specifically meets the stringent requirements of the professional user. This versatile product offers 30 to 40 min dry time and 2.5 to 3 hr assembly/working time. The additional bonding time allows extra time between adhesive application and actual surface bonding. It is resistant to the effects of water and most household cleaning agents. Bonds become stronger and more resistant as they age.