Our roofer just finished combination shingles and flat roof ( IB system). Please see some pictures of the gaps and holes that were left in the shingle where they meet the chimneys or the blocks. I asked about this and he said it's ok as there are layers underneath. Also, the edge of the shingles that come in contact ( not overlapping) with the flat IB system part of the roof, are not attached in a way that I can't lift a row. I can lift the row of shingles about 3 or 4 inches , just the edge. Is this ok?
We did have the old roof entirely removed. What do you think?
Thank you, Gabe
The photo that you provided shows the ridge shingle butting up against (what appears to be) a chimney. There should be step shingles (metal pieces bent at 90-degrees) that are integrated into EACH COURSE of shingles that extend up the vertical side of the chimney, and are concealed under a flashing that is integrated into the brick coursing of the chimney (a similar example of this can be seen here http://www.bing.com/images/search?q=roofing+step+shingles&FORM=HDRSC2#view=detai
). It appears that there is a flashing that was just painted - I'm hoping that the step shingles are installed and the flashing was bent back down into place, and repainted. If this is the case, I would not be too concerned regarding the ridge shingles butting up to the chimney as the underlying step flashings should properly protect the area. This is an extremely vulnerable location as the step flashings are generally cut, and rely on sealant at the corners, if the roofing contractor took great care with his sheet metal, or provided a soldered flashing or lead, the location should be fine. I'm not sure why there is a cut in the shingle on the right of the photo though.
Regarding the integration between the IB roof and the steep-slope shingles, the detail should be as shown here http://www.ibroof.com/sites/default/files/detaildrawings/IB.FADetails.2009.02.12
- which is taken directly from the IB website. The IB roof is a PVC and they generally can NOT come in contact with bitumen products, thus overlapping shingles directly onto the IB is likely not a good method, likely why IB's details show a metal flashing as a divider between the bitumen shingle and the PVC membrane.
Hope this helps,