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Old 2018-11-27, 08:37 AM
Halton Home Inspector Halton Home Inspector is offline
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Join Date: Dec 2008
Location: Milton
Posts: 719

^ That's a good answer.

Where I am if the new home owner identifies cupped hardwood during the PDI the builders reps often do what ever they can to avoid putting it on the PDI list. I have even seen one PDI rep pretend to put it on the list. This is because the rules around cupping are written in a way that makes it very difficult to get coverage on this issue if not identified AND NOTED as a PDI issue.

Builders PDI reps often say things like "keep an eye on it" or put it on your 30 day or one year" etc. but this is just a delay strategy that will cause you to lose coverage.

Read the Tarion rule below and you will see what I mean. It is convoluted and confusing and your only option is to protect yourself and identify cupped floors during the PDI.

Construction Performance Guideline 12.21


Acceptable Performance/Condition - Strip hardwood flooring shall be installed without cupping.

Warranty - One-Year - Work and Materials

 Damage caused by improper maintenance is excluded from the statutory warranty.
 Cupping caused by excessive humidity due to failure by the homeowner to maintain
adequate ventilation is excluded from the statutory warranty.


One complete heating and cooling season should be allowed as the problem may
remedy itself. Cupping identified at the time of the PDI shall be repaired. Cupping that occurs after the PDI and is proven to result from defective work or materials shall be repaired.


Identify any damaged hardwood flooring on the PDI Form to avoid any dispute about
whether the damage was caused by the builder. Cupping of hardwood strip flooring
results from excessive moisture when the humidity below the finished flooring material is substantially higher than above. The homeowner has a responsibility to maintain indoor humidity levels through humidification, ventilation, air conditioning or dehumidification to prevent permanent, irreversible damage. A hygrometer can be used to monitor indoor humidity levels. The immediate sanding of a cupped floor without first allowing it to correct itself may cause even more damage. This condition commonly occurs when houses do not have adequate ventilation and can, under certain circumstances, result from defects in work or materials.

Construction Performance Guidelines - A good study for any new home buyer -
For the new home warranty inspection services you need and deserve call Andy Shaw at 905 876 4761

Last edited by Halton Home Inspector; 2018-11-27 at 08:41 AM.
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