• Texas highway maintenance department needed a more permanent fix for their rest area, rest room floors. The previous epoxy systems used were unable to bridge the constantly moving concrete cracks in the various facilities. This problem resulted in water migrating down under the slab when maintenance crew conducted their wash downs and cleaning procedures. Due to the water infiltration, vapor drive and hydrostatic pressure began to disband the existing coating.
• At this point, several local specialty coating contractors, were approached in order to provide a solution.
• One contractor contacted Elastomer Specialties, Inc. Polymers Division for a solution.
• It was determined that a color stable, rapid curing, Elastomeric polyurea coating system would be the answer to the ongoing slab movement problem.
• Several different facilities around the Dallas, TX area were identified and a contract was awarded.
• The average size of each roadside restroom facility was approximately 1200 SF.
• The contractor needed a material that was fast curing, color stable and non-skid. Each facility would be shut down for a 24-hour period to allow the replacement of all the restroom fixtures, sinks, stalls, and toilets.
• The contractor that was awarded the actual contract did approximately 15 different locations during the month of June, 2001.

• Products specified:
  

  1. Primer - PolyBon A rapid curing, epoxy/urethane primer manufactured by Elastomer Specialties, Inc.
  2. Joint Sealant - ElastoFil 75 A rapid curing polyurea crack and joint sealant.
  3. Top Coat - ElastoGard AL-Slow Gel A color stable, aliphatic polyurea spray developed for use with low-pressure spray equipment.

 INSTALLATION:

• Prior to installation, the entire floor was first degreased, then it was thoroughly ground down using a Saw-Tec grinder and vacuum system, to remove all the loose and unsound concrete.
• Once the surface preparation was completed, the contractor applied PolyBon primer using short nap rollers, at a coverage rate of approximately 175 SF per gallon. Once fried, the walls were then masked off in order to prevent overspray.
• After the primer had dried for two hours and the walls were maked off, the contractor applied ElastoGard AL, using a Condor Plural Component Pump. The thickness of the base coat was 40 mils. A final 15 mil stipple coat was applied for non-skid purposes and to give a final dry film thickness of 55 mils. Once the coating was applied and masking removed, the coating was allowed to cure for 2 hours, then the fixtures were re-installed.