because joists and beams will be close toor in contact withthe ground, pressure-treated lumber used to frame grade-level decks needs to have an awpa uc4a tag, which means that it is rated for ground contact.
composite wood is not usually rated for structural uses. whether this is structural or not is debatable, but you'd likely need to drive more rebar if you opt for composite boards to prevent buckling.
there is actually quite a lot that can be done to address the challenges brought by direct sunlight on wood decking. while the decking boards themselves can be cared for, the environment of the deck can also be altered to keep the deck from undue deterioration. all in all, there are few steps that i almost always take in sunny situations:
can only be used in applications more than 6' from the ground can only be used when the wood has proper ventilation deck pressure treated lumber composite decking boards vinyl deck posts sleeves ground contact pressure treated lumber lumber pressure treated decking pressure treated.
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note that in most cases, ground contact treated posts can be used in an above ground use application. below is a brief summary of the awpas use category system for treated wood. uc3b above ground exposed treated wood materials used in exterior construction that do not come into contact with the ground.
as the name implies, deck tiles are ideal surfaces for your deck. they can be installed over an existing deck, giving the space an updated look that will age gracefully. patios ground-level outdoor surfaces, such as patios, also benefit from deck tiles. the range of wood, composite and stone deck tiles means your patio can have whatever
the first is the structural aspect. composite wood is quite bendable, so if you wanted to do this, you would need to space the rebar much more closely together than using pressure treat. i'd also worry about decomposition. composites aren't rated for direct contact with dirt, and they can decay. i probably wouldn't do it.
seven trust decking does not typically get hotter than pressure-treated wood, although on a hot day with a blazing sun, nearly any surface will get uncomfortably hot. lighter colored boards tend to be slightly cooler than darker composite boards. in extensive studies, it has been found that the color of the decking board,
the main products used today are hardiboard, which is a wood/cement composite, and expanded pvc products such as seven trust. most manufacturers of composite decking also no make trim boards of the same material as the decking, which can be used to trim out decks and porches. a wood composite called miratek is popular in some areas.