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Hi Beatrice,<br>
<br>
My apologies; I didn't read your first post carefully enough in
which you said that the polysio was structurally compromised and I
didn't realise the EPDM had holes. Thus the whole thing will have to
be deconstructed above the ceiling joists.<br>
<br>
As this is the case, I think my suggestion of insulating from below
has merit. The whole process above the ceiling joists would be
greatly simplified if you merely had to provide a watertight
roof/deck and insulated from below. You may get some info from this
article
<a class="moz-txt-link-freetext" href="https://buildingscience.com/documents/insights/bsi-051-decks-roofs-you-can-walk-on">https://buildingscience.com/documents/insights/bsi-051-decks-roofs-you-can-walk-on</a>
or this
<a class="moz-txt-link-freetext" href="https://buildingscience.com/documents/building-science-insights-newsletters/bsi-116-interior-spray-foam">https://buildingscience.com/documents/building-science-insights-newsletters/bsi-116-interior-spray-foam</a>
.<br>
<br>
Peter<br>
<br>
<div class="moz-cite-prefix">On 2/20/24 9:58 p.m., Beatrice Dohrn
via Greenbuilding wrote:<br>
<br>
<i>THanks Peter</i>
<pre
style="-webkit-text-size-adjust: auto; caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);"><i>I don’t know what’s going on under there…. Will see in the summer, but the epdm developed some pinholes causing tiny leaks. So I don’t think it’s enough to address from inside…. </i></pre>
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