Greetings! I reside near a picturesque "lake" in New Zealand and have an exciting project in mind: constructing a floating sauna. Currently, I'm in the process of researching suitable materials. It has come to my attention that Cedar, while an excellent choice, tends to be quite expensive. Therefore, I am seeking alternative timber options that are more budget-friendly for the outer walls of the sauna. It's essential for the chosen timber to withstand the scorching summer sun and the corrosive effects of saltwater. I would greatly appreciate any advice or recommendations you can offer regarding this matter or any other general tips you might have. Thank you in advance!