Honestly, it's not that different from what he'd expect from Prompto. Not that there might be ulterior motives beyond... the priorities of city folk.

"Should at least help till you can find more stone." A shrug, up to Tim if he wants to take the advice or not. "It's... very different, doing construction and roughing it like this."

He actually looks a little sheepish, reaches up to pull the damp hair that's sticking to the back of his neck up. "Kinda been a hobby of mine for awhile."