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Client Acknowledgement & Disclaimer

Grind & Seal Concrete Floors

Please read and sign below before we proceed with your grind and seal finish, so you understand the nature of the finish, the care it needs, and the limits of what OzGrind can be held responsible for.

A grind and seal finish is a topical sealer applied over a ground concrete surface. It is hard wearing and stain resistant, but because the protective layer sits on top of the slab it can be marked, scratched or lifted if it is not protected correctly, particularly while other trades are still working on site.

What you need to know

01
Tape, Glue and Adhesives: Delamination Risk

Do not apply tape, glue or any adhesive directly to a sealed floor.

This includes builders' tape, painters' tape and masking tape. Even low tack tapes bond to the sealer, and when they are removed they can pull the sealer up with them, causing it to lift, peel or delaminate and fail. This is not a fault in the product or in OzGrind's workmanship; it is caused by the adhesive being applied to the surface. Any repair required as a result is chargeable. Please note tape should not be applied to a mechanically polished floor either, while it will not delaminate, it can still mark and stain the surface.

02
Mechanical Polish: An Alternative Finish

If the floor is likely to be exposed to heavy trade traffic, likely abrasion or pets with sharp claws, a mechanical polish (MPC) may be the more suitable finish. With a mechanical polish the finish is ground and refined into the concrete itself rather than sitting on top as a coating, so it is generally more resistant to scratching, scuffing and wearing away. Just as importantly, a mechanical polish can be patch repaired if it is damaged, whereas a grind and seal cannot, a damaged sealer usually requires the whole floor to be re-coated.

OzGrind has offered this alternative. By signing below you confirm you have been made aware of the mechanical polish option and have chosen to proceed with the grind and seal finish. You can compare the two finishes on our MPC vs Grind & Seal page.

03
Scratching and Scuffing: From Other Trades

A sealed floor can be scratched or scuffed by grit underfoot, dragged materials, dropped tools, trolleys, scaffolding and general trade activity. Where the floor is handed over before the build is complete, or where other trades continue to work on or around it, OzGrind cannot control how the surface is treated. OzGrind is not liable for scratches, scuffs, gouges, staining or other damage caused by other trades, site activity, or anyone other than OzGrind once the floor has been sealed and handed over.

04
Curing and Protection
  • No foot traffic for at least 24 hours; no vehicle traffic for 7 days.
  • Avoid heavy traffic and moving furniture for at least 72 hours.
  • Keep all water and liquids off the floor for at least 72 hours after the final coat.
  • Some sealers take up to 14 days to fully cure, depending on weather.
  • If the floor must be covered, use only breathable coverings such as Ramboard or GeoFabric. Never use plastic or non-breathable coverings, they trap moisture and can turn the sealer milky or cause it to peel. Ensure no tape is applied to the floor itself.
05
Ongoing Care

Once cured, keep the floor free of grit, clean with lukewarm water or a pH neutral cleaner only, and protect it from acidic spills, abrasive or harsh cleaners, steam mops, wax products and direct heat. Full care instructions are provided separately. We recommend a sand and re-seal every 5 to 7 years depending on use. Damage resulting from failure to follow the supplied care instructions is not covered.

Examples of tape and adhesive damage

Peeled & Flaked Sealer on a grind and seal concrete floor
Delamination
Peeled & Flaked Sealer Sealer peeled away when tape was lifted from the floor.
Lifted Along Tape Lines on a grind and seal concrete floor
Lifting
Lifted Along Tape Lines Strips of sealer pulled up where tape ran across the floor.
Perimeter Delamination on a grind and seal concrete floor
Edge Lift
Perimeter Delamination Sealer delaminating along the skirting line.

If you have any questions in relation to this document, please do not hesitate to contact our friendly office staff on 07 3177 3367 or enquiries@ozgrind.com.au.

Acknowledgement

By signing below, I confirm that:

  • I have read and understood this document.
  • I have been offered the mechanical polish alternative and have chosen the grind and seal finish.
  • I understand the surface can be marked, scratched or delaminated by tape, adhesives and other trades, and accept that OzGrind is not liable for such damage once the floor is sealed and handed over.
  • I will follow, and make others on site aware of, the curing, protection and care requirements above.
Client name (printed)
Client signature
Date
Site / project address
Indoor polished concrete floor in a Brisbane home by OzGrind

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