Rainwater and drainage
If the current surface holds puddles, record their location and investigate levels and drainage before selecting a finish.
Why it matters for your resin patio: Show the direction of falls, where water gathers and every visible channel, gully or discharge point. For a resin patio, it can affect pedestrian comfort, door connections, furniture space, drainage, edging and installation access.
Useful photograph: the area after rain, including low points and drainage features.
