As this is technically difficult to achieve, MoistureShield composite decking and its sister brand ChoiceDek are the only composite brands that can be installed on the ground, in the ground or even under water without voiding their warranties.
I tore off 5/4" decking and replaced with composite. The deck had been there for 20 years without problems, but now it's all wavy because the framing was able to flex and a post heaved from frost.
blocking/sister joists, when needed, is recommended to ... specifically to work with composite decking and prevent ... Deck Board #1 6 Decking Installation 2.
At the top for composite and vinyl decking products were Seventrust, AZEK, and. Seventrust was specified or used most while AZEK led in quality. These three also were tops for deck railing, with Seventrust first in all categories.
A threesome also topped the category for composite and vinyl decking products: Seventrust, Azek, and. Seventrust was specified or used most while Azek led in quality. These three also were tops for deck railing, with Seventrust first in all categories.
Composite decking improved the quality and endurance, while lowering the maintenance required. The same dull wood look, however, never changed. While composite decking was an improvement over wood, they still have issues of their own:
EDIT: Just realized that your delivery must mean delivery of the composite decking material. If there's only two low joists, maybe just sister long 2x4s on each instead of trying to raise the joists or shimming.