Hello Building a raised wood pellet stove hearth for the garage. The stove will be in the back right corner. Unfortunately this is where any water or snow melting runs right too! So the stove must be elevated to prevent the bottom from rusting out! Therefore, the materials should not rot easily. So far I used 2x6 pressure treated lumber and I just got some PVC board to trim it out. Should I show the PVC board smooth or ruff side? See pics. I had the wood lying around and the permabase was $10.00 but the PVC board is expensive!