Understand the issue
What this means for your floor
The source should be located before refinishing or covering the stairs so finish work is not used to mask an unresolved movement problem.
What can change the recommendation?
Tread-to-riser movementInspect and measure the condition before selecting a repair. Separate surface preparation from damaged material or structural movement and record the agreed limits of work.
FastenersInspect and measure the condition before selecting a repair. Separate surface preparation from damaged material or structural movement and record the agreed limits of work.
Access from belowIdentify this item during the assessment and retain the relevant photos or product records. Make the assumption explicit in the written scope instead of treating it as automatically included.
Stringer/support conditionInspect and measure the condition before selecting a repair. Separate surface preparation from damaged material or structural movement and record the agreed limits of work.
Existing finishIdentify the existing and proposed materials. Evaluate an appropriate sample and document the agreed appearance; a product name alone cannot establish compatibility or a perfect match.