(I don't know where else to post this besides possibly /r/whatisthisthing.)My porch/deck is about 23 years old now. It's gone through some severe Pennsylvania weather and hasn't been stained in almost 20 years.I noticed some bleaching occurring beneath the porch; it's much whiter than the normal wood color. I was wondering what it is or what may be causing it. It's not happening anywhere else. The porch stretches around half the house.Thanks!Phoeo. via /r/DIY http://ift.tt/2oixlfc
