Wood touching insulated concrete - pressure treated or not?
Wood touching insulated concrete - pressure treated or not?
(OP)
I have a concrete wall in a heating only climate that is insulated from the outside, insulated from the ground, and sits on a percolation barrier. The question is does the wood that contacts the concrete need to be treated?
Reasons (i can think of) wood touching concrete should be treated:
1. Moisture percolates up through concrete wetting wood (can't in this case)
2. cold uninsulated concrete can cause condensation of moisture that touches wood (can't in this case)
3. Fresh concrete is still evaporating bleed moisture (how long does this happen?)
Only the 3rd case is a possible reason to use treated lumber in the spec'd case, but I don't think it could be a log term cause of rot. Any thoughts?
Reasons (i can think of) wood touching concrete should be treated:
1. Moisture percolates up through concrete wetting wood (can't in this case)
2. cold uninsulated concrete can cause condensation of moisture that touches wood (can't in this case)
3. Fresh concrete is still evaporating bleed moisture (how long does this happen?)
Only the 3rd case is a possible reason to use treated lumber in the spec'd case, but I don't think it could be a log term cause of rot. Any thoughts?






RE: Wood touching insulated concrete - pressure treated or not?
Dik
RE: Wood touching insulated concrete - pressure treated or not?
RE: Wood touching insulated concrete - pressure treated or not?
Another reason, is that concrete is aggressively alkaline. In the absence of pressure treating (usually acidic), the wood will dry out and its cell structure will be damaged from the exposure to the drying/alkaline condition. This is another reason it should be pressure treated.
The code requires it. This is another reason it should be pressure treated.
Use pressure treated wood.
RE: Wood touching insulated concrete - pressure treated or not?
RE: Wood touching insulated concrete - pressure treated or not?
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RE: Wood touching insulated concrete - pressure treated or not?
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RE: Wood touching insulated concrete - pressure treated or not?