Under what condition should re-tempering be considered during finishing?

• A. If permitted by contract
• B. Always
• C. Never
• D. Only if ordered by customer

Answer: (A)

Re-tempering during finishing is something you consider only when the project contract or specifications authorize it. It involves lightly re-wetting and reworking a surface that has begun to stiffen to improve texture and reduce surface imperfections, but it can affect curing and bond if done outside approved procedures. When the contract allows it, you can apply re-tempering in the proper time window and with controlled moisture to enhance surface quality without compromising strength or causing problems like excessive laitance or over-wetting. If the contract does not permit re-tempering, don’t perform it; follow the approved finishing and curing methods instead. Customer requests don’t override contract requirements.