Wood – Treatment for wood under a Trex Deck

cleaningdeckwood

Just moved into a 5 y/o house with a "maintainence free" Trex deck. Underneath, it's supported by lumber as shown below

enter image description here

When it rains the water drips through the deck slats and leaves this green moss on the lumber. I'm wondering a few things:

  • Does this lumber require any maintence? Ie do I have to weather seal this every so often?
  • Does the green moss cause the wood to deteriorate faster?
  • Can this type of wood be pressure washed? If so, does it need treatment after?

Thanks

Best Answer

That framing will last decades with no maintenance. I just replaced the decking on my mother's 20-year-old pool deck which had not been well-maintained through the years. The framing was all in good shape though the decking was rotted and warped.

With that said, if you want to wash it for cosmetic reasons, it won't hurt to do that.

Related Topic