Single Component & Catalytic Water Based Polyurethanes

  • Approximately 250 g/l volatile organic chemicals.
  • Each coat dries in about 2 hours.
  • Coating build feels lighter on the wood.  Color changes little over time.
  • Less odor.  Most odor is gone within 12 hours.
  • Toughest coatings cost more but can deliver a comparable product to oil in a shorter time frame with less odor. 
  • Recommended for projects where household will be occupied during work.
  • Catalyzed urethanes are 90% cured in 24 hours.

Oil Based Polyurethanes

  • Approximately 500 g/l volatile organic chemicals.
  • Each coat dries in 18-24 hours.
  • Coating build feels thicker on the wood.  Color darkens and yellows over time.
  • Strong odor.  Odor remains for days and sometimes weeks.  
  • Dollar for dollar a comparable coating to water for 30% less.  Performs well in commercial areas and rentals.
  • Not recommended for application in occupied housing.
  • Coating cures in 30 days.

 Acid Curing Finshes AKA Swedish Finish

  • Approximately 560 g/l volatile organic compounds.
  • Each coat dries in four to six hours. 
  • High humidity and low temperatures can extend dry times.
  • All sources of ignition must be turn off in the home ie heaters, air conditioner's and pilot lights.
  • High build and hard wearing. 
  • Contains large amounts of formaldehyde.
  • Cures in approximately 7 days.
  • All pets and people must be removed during the coating process. Not usable in occupied housing.
  • Very high toxic initial odor. Typically dissipated in 24-48 hours with aggressive ventilation.
  • Due to the health and fire risks to the applicator and the consumer Cottonwood Finishes chooses to use Bona Traffic where a high quality hard wearing coating is desired.