A terrace fails quietly: water sits in a cup of the boards, frost polishes it, and a bench concentrates weight on four feet. Ask where the water goes before you ask what the timber is called.
Record board gaps, the path water takes off the deck, and the load and species on the care note the maker will sign.
Questions for the maker’s note:
- How wide are the gaps, and do they clog with leaves or grass?
- Does water leave at an edge, a gap, or a puddle in the middle?
- What does the care note say about frost, algae and furniture feet?
- Who inspects the deck the morning after a storm?
The Health and Safety Executive slips index, accessed 14 October 2026, includes weather among the topics on its questions list. That is why frost and wet timber belong in the same conversation as a fall. Product approval for the boards comes from the maker’s signed care note.
For sub-surface terrace engineering—comparing sloped mortar beds against open-joint adjustable pedestal pavers, sizing IPC §1106 storm trench drains, and detailing flush ADA door thresholds—see patio drainage systems for clubhouse terraces. Indoors, where mud is wiped before it reaches a rug, see the threshold sequence. How the 18th-green viewing terrace connects to the 19th-hole grill, locker rooms, and arrival sequence is detailed in golf clubhouse design and member-visitor flow. The parent section is clubhouse design.
After rain, look for a dull patch that stays wet into the next morning. Mark it on a sketch of the deck, dated by the person who walked it, and compare it with the load on the maker’s care note.
Method and sources
Original questions. HSE slips index, accessed 14 October 2026. Updated October 2026.
