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