We have had some issues in our basement – mold growing in the rafters on our unfinished side of our basement. (other half has drop ceiling and painted cement walls) We had professional come out and remove the growth from the half of the basement with the exposed beams/mold. The strange part is we dont’ see any water and every contractor comes in and says there is no signs of water (smell, moisture etc). Humitidy runs around 45% in the late summer when I started to track. We have 3 leaky windows on the unfinished side, and a back door with cement steps to the outside. We are also looking to renovate the “partially finished” side as a playroom. I need some guidance before I renovate to cover everything.
Considering the orginal mold insult, I am worried about renovating the
basement since we haven’t found the “source” of the moisture. 1) we plan on
replacing the windows. 2) we are considering either re-cementing our back steps
or putting in bilco doors/ prepoured steps, 3) insulating the walls. I guess the stack
effect isnt helping either (we have a strong draft with our chimney). The moisture must be pulled toward the steps in the basement – and moisture condensing on the rafters = growth
Is there anything else we should consider while finishing off 1/2 of the
basement? we have never had water – we have a poured foundation with no cracks. The previous owner stated they received water through the back steps during a hurricaine when the drain at the bottom of the steps became overwhelmed and water entered under the door. That may have been the reason for the growth if the water was not removed quickly.
I put in a dehumidifer as a precaution. But I don’t want to rip ou the basement in a few years if the mold returns.
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