How you store timber between delivery and installation affects the finished job. The basics: keep boards flat and fully supported so they cannot sag, off the ground on evenly spaced bearers, dry, and out of direct sun. Leave protective wrapping on until you are ready to work, but allow airflow if the timber is damp.
Hardwood decking benefits from acclimatising at the site before fixing. Detailed, species-specific guidance will be added as the catalogue is finalised.