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FREQUENTLY ASKED QUESTIONS

Does 24 hours of cross-ventilation mean continuous 24 hours?

If you will need to close up windows and doors on a project overnight or due to poor weather (e.g.: rain, sleet, or snow) or security, keep in mind that you will have to make up the hours of poor ventilation while you are physically at the job site and able to achieve adequate cross-ventilation.  
“24 hours between coats” means “24 hours of good/adequate ventilation” between coats (see the Drying, Curing and Ventilation guide in the FAQ section.) Dry times will likely increase with poor ventilation.
 
For example: If you leave the jobsite and close the windows at 6 pm and arrive back at the site to open the windows and achieve cross-ventilation at 6 am, you would have been gone for a total of 12 hours (6 pm to 6 am = 12 hours).
 
Since the dry time with adequate ventilation is 24 hours, you would need to make up 12 hours in this example (24 hours - 12 hours = 12 hours remaining).
 
TIP
 
You can check to see if your surface is dry enough to walk across by two methods:
  1. Take a piece of facial tissue between your finger and the substrate and press down firmly. Lift up on the facial tissue. If any fibers of the facial tissue are left in the film, the film is not dry yet and needs more time.
  2. Lightly sand an area of the project. If it powders and does not gum up or plug the sandpaper, then it is dry enough to re-coat.  

Established 1910