Answer
Oct 09, 2019 - 12:55 PM
The maximum allowable deflection in the sub floor is 3/16" over an 8 foot radius. Marmoleum Cinch Loc can be installed over the top of existing sheet vinyl as long as it is within these limits. Simply lay a 6' straight edge on the floor and peek underneath it. If it's 3/16" or less, you are good to go. If it is more than that, you will need to either sand down any bumps or fill any dips with a patching compound. Patching or finishing compounds are portland cement fine aggregate fillers that are easy and safe to apply. (Ardex, Chemrex or Mapei brands are all good).
