I am installing a sauna wood stove (Lammpa Kuuma) and will have both stove-attached and wall-mounted heat shield with 1" air gap. I will exceed the clearances to a combustible wood paneled wall. I'm wondering if I should install a tiled cement board wall to the back and side of the wood stove anyway. Initially, I thought I would because this offered additional protection. But now I'm thinking it doesn't, and may actually be worse. Looking at cement board manufacturer sites, they are typically rated only to 200 F (durock) or 220 F (permabase) service temps. A sauna may reach those temps. It seems wood may actually hold up better. Any Thoughts on this are appreciated. Thanks.