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Fortis 518 is a high gloss, single pack polyurethane coating that is moisture cured with extremely high solids, achieving the strength of a two pack polyurethane. Fortis 518 has excellent flow and weathering properties with extremely high adhesion qualities to Concrete, Timber & Stone. It has long wet edge and low odour. Fortis 518 can be used in any application requiring a low maintenance, heavy duty, high gloss, stain resistant concrete floor coating. Fortis 518 has been specified in large retail outlets, factories, showrooms, and domestic projects.


  • High Solids Content
  • Extremely high adhesion
  • Pour straight from the can (no mixing)
  • High build
  • More than 2 coats may be applied in 1 day
  • Scuff Resistant



  • Never install a moisture cured polyurethane on days where the relative humidity exceeds 75%.
  • Always ensure that there is adequate ventilation to allow solvents to disperse.
  • If re-coat time exceeds 8-12 hours then sand prior to applying a subsequent coat.
  • Apply thin coats as per manufacturers recommendations.

When humidity levels exceed 75% proceed as follows

  • Leave re-coating until the following day
  • Throughly sand the 1st coat, then vacuum clean
  • Wipe down the 1st coat with xylene and allow a short period to dry
  • Wipe excess xylene residue with a clean cloth & proceed with the 2nd coat.

* The above information is to be used as a guide only and Con-Treat accepts no responsibility for any consequence resulting from the advice contained herein or verbally.



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