Converting a shed into a sauna

[Ianstonard]

I’m struggling to find cost efficient interior cladding for my self convert sauna. Traditionally you would use aspen. Spruce or cedar but these are way to expensive for a 8 x 6 shed.

is there any advice on cheats or cheaper alternatives 

[JohnMo]

Just shop around, go direct to mill, can be about half the price.

[SteamyTea]

All our saunas were made with white pine, usually Siberian.  Siberian pine is often called cedar or dwarf cedar, even though it is not a cedar.

So be careful what you ask for.

Benches were made from Abachi, often called African Whitewood.