water between vapour barrier & subfloor
trying
| Posted in Energy, Heating & Insulation on
I put 6mil poly vapour barrier over my floor joists and laid my 3/4″ t&g plywood over it. I folded the plastic over the subfloor, and placed the sill plate on top and framed the exterior walls.
The exterior is sheathed and wrapped. I am planning to do the floor insulation soon.
Do you think it is still water from when it was exposed as I was building it, last fall. I would have that thought it would pretty junky if it was. It rained last night, so I am figuring it is pretty fresh.
Any thoughts
Replies
Er, did you leave something out? Seems to be a disconnect in your message.
You're talking about sheathing then, all of a sudden, you asking about presence of standing water.
What water? How much? Where (on top or below the plastic?) How extensive (over the area)? See any seepage on the walls (if exposed)? How long ago did you put down the vapor barrier and start framing on top of it? Can you see if it's moving (either in one direction or another or in volume?) Color of water (Why describe it as murky?)
I gather you don't have the place enclosed yet. Otherwise why mention that it rained last night? Was the water on top of the T&G or below it? Was the T&G wet from rainwater or did it have puddles on it?
You state that the exterior is sheathed and wrapped. With what? Was it waterproofed first? Curtain drain put in? Properly (no offense)? Are gutters and downspouts/leaders in yet?
Sorry I haven't got back to you guys, I think I may be fine?!?!?
I went under the new addition and cut half inch slits where the water was and used a shop vac to remove the water. Later that day we had another nasty rain storm in southern ontario. I went back under several times since then and now water yet.
I am hoping that once the gutters and the siding is up that all will be fine.
I know that 3/4 ply is considered VB but on tv there is a certain contractor that always freaks out when there is no VB when he is called in to fix a renovation gone bad.
I'd still use 15 lb felt instead of poly. No matter what, unless the temperature is the same on both sides, there will be some condensation on the poly. And over a long enough period of time that will be a problem.
Trying,
Assuming you have access under the floor, you should slash all of the poly and let the water run out -- if there is any water. You made a mistake. You don't want to put 6 mil poly under subflooring. Among the many reasons why not is exactly your problem -- rain during construction can get trapped. You should know that 3/4 inch plywood is a vapor retarder -- so you don't need the poly.