Hi all,
I have a situation that I would appreciate a comment on. We have an old 1950 rancher with poured concrete basement walls that over the years have had cracks and water infiltration. We recently had the basement waterproofed and all the cracks repaired. The waterproofer added a heavy duty fibered poly sheet over the concrete wall as what he referred to as a moisture barrier (not vapor barrier) to drain any new seepage that would develop on the wall face along the inside of the poly and into the drain system. The seams were all taped except for the top near the sole plate and the bottom which fits behind a flange to direct moisture into the drain. This barrier has little if any insulation value. Any thoughts on how to insulate this properly. I have just finished insulation all the rim joists with 2" blueboard and foam. I was thinking originally of just framing against the fibered sheeting and using Roxul insulation in the framing voids with a poly vapor barrier under the drywall since the concrete poly barrier is not completely sealed and therfore not a true vapor barrier. I later thought of using 1″ blueboard against the moisture barrier just held in place by the framing ( for some insulation value but not air tight) and continuing with Roxul and a poly vapor barrier. We live in moderately cold SE PA and I will be using a dehumidifier in the basement as we don't have central air conditioning. In the winter we will heat the basement with a pellet stove. Thanks in advance for setting me straight.
I have a situation that I would appreciate a comment on. We have an old 1950 rancher with poured concrete basement walls that over the years have had cracks and water infiltration. We recently had the basement waterproofed and all the cracks repaired. The waterproofer added a heavy duty fibered poly sheet over the concrete wall as what he referred to as a moisture barrier (not vapor barrier) to drain any new seepage that would develop on the wall face along the inside of the poly and into the drain system. The seams were all taped except for the top near the sole plate and the bottom which fits behind a flange to direct moisture into the drain. This barrier has little if any insulation value. Any thoughts on how to insulate this properly. I have just finished insulation all the rim joists with 2" blueboard and foam. I was thinking originally of just framing against the fibered sheeting and using Roxul insulation in the framing voids with a poly vapor barrier under the drywall since the concrete poly barrier is not completely sealed and therfore not a true vapor barrier. I later thought of using 1″ blueboard against the moisture barrier just held in place by the framing ( for some insulation value but not air tight) and continuing with Roxul and a poly vapor barrier. We live in moderately cold SE PA and I will be using a dehumidifier in the basement as we don't have central air conditioning. In the winter we will heat the basement with a pellet stove. Thanks in advance for setting me straight.