If you're choosing deck boards yourself:
Look for pressure-treated boards stamped ‘select,’ which means a grade with few knots or blemishes.
Sight down each board to avoid warped, twisted, or cupped boards; avoid wet boards.
Consider using pressure-treated boards for structural elements and upgrading to cedar or tropical hardwood for the deck boards proper.
When buying cedar boards, select boards cut from the heartwood.
If you choose a tropical hardwood like ipe, remember that its density makes it harder
to work with and that a dark colored wood. Is not the color that will remain. With Sunlight Ipe turns a beaurtiful
silver color that does not to be maintained.