Planks are not the same as framing
Aluminum deck boards form the walking surface. Aluminum or steel structural framing is a separate decision. Ask the quote to identify both components and all compatible fasteners, trims and connection details.
Water management is system-specific
If a dry space below is important, request documentation for that exact system, including joints, slope, perimeter details and drains. Do not infer a waterproof roof from an interlocking board profile alone.
Compare the experience as well as the specification
Ask to see and touch a full sample. Consider finish, texture, noise, sun exposure and repair access. Confirm current local supply, a suitable installer and the requirements for cleaning and avoiding damage to the finish.
Questions worth asking
Does aluminum decking always make the space below waterproof?
No. That depends on a complete documented assembly and its installation.
Can a metal deck still have wood framing?
Potentially. The complete combination must meet the product requirements and applicable design requirements.
