Avoiding Problems with SIP Roof
I was listening to Mr. Holladay on the FHB podcast and started getting nervous about my SIP roof built 3 years ago.. We live in central Washington and the climate is pretty cold in the winter (mid 20’s) and hot in the summer (upper 90’s). The humidity levels are low year round. We get about 2-3 of snow on the ground by February. The roof is 1/2:12 pitch and is 64’x32′. The bottom seams of the panels were taped, although the tape didn’t seem to stick all that well. The humidity in the house is around 28-32% year round. The ceiling is painted drywall.
We did not do an air gap on the upper side of the roof. The roofing is metal, which is pushing it for the 1/2 pitch. I icegaurded the whole roof, but those seams did not bond well either. I should’ve used a better product.
My question: should i be concerned about anything?
Also, for the first time, we had an ice dam build up 2 days ago. There was water coming down out of the first seam in the SIPs. Fortunately, it is a large overhang, so it wasn’t on the interior of the house.
Now, I’m wondering should I pull all the roofing off once it warms up and let the thing dry out and also to see if there is any mold. Then maybe replace with a better underlayment and a TPO roof?
Lastly, we just sold the house last month and are renting it back from the new owners through May. So, it’s kind of a tricky situation.
GBA Detail Library
A collection of one thousand construction details organized by climate and house part