The timber needs to accept the proposed product in the way its instructions require. Glossy residue, uneven wear or previous treatment can change absorption. Photos support planning, but an on-site suitability check may still be needed before the application method is confirmed.
The surface must meet the oil maker’s drying requirements after cleaning or rain. A visually dry top surface alone may not settle the question. Leave scheduling flexible enough for the accepted product and actual conditions instead of treating the booking date as a drying guarantee.
Provide the old product label if available. A penetrating oil maintenance treatment is different from applying a film-forming deck paint. An existing incompatible coating may need separate preparation, so a new oil should not be selected from colour preference alone.
Apply the compatible oil according to its coverage and application instructions to the agreed prepared accessible deck surface. Scope limits: Compatible penetrating-finish maintenance on sound timber only. No structural repairs, hazardous stripping, waterproofing systems or guaranteed restoration of damaged boards.