How do you estimate a wood or composite deck?
Measure the area, choose board direction and work out rows, boards, joists and fasteners. On slabs use adjustable pedestals; on grade, a raised frame with ventilation and drainage.
Railings and balusters are figured separately to the code's height and 4 in rule.
Tropical hardwood, treated pine or composite?
Treated pine is cheapest but needs upkeep; tropical hardwoods (ipe, cumaru) are hard and long-lasting; composite needs little maintenance and won't splinter, though it gets hotter in sun.
Each material has its own joist spacing and fastening — follow the maker's guide.
How do you maintain a deck?
Clean yearly, check fasteners and re-oil or stain every 1–3 years for natural wood. Keep board gaps clear so water and leaves don't collect.
Inspect the substructure every few years, especially in damp areas.