Retrofitting a portion of new roof with SIPs?
I am a homeowner in Austin, Texas. My roof needs to be replaced. My home is one and a half stories. The front portion of the first story was remodeled 30 years ago and a section of the interior ceiling was vaulted. This part of the house is an energy sinkhole – 6″ airspace and who knows what for insulation. I want to resolve this major problem when I re-roof. So far, SIPS roof panels seem to be my best option. As I understand, they could be laid on top of the existing roof decking which is shiplap boards.
Are SIPS roof panels a decent/viable retrofit option?
What are the best recommendations for sealing joints between panels?
Since the SIPS are expensive, I want to use them only over conditioned living space. The section of roof I am looking at intersects with a gabled roof over my front porch creating two valleys. Is it possible to successfully connect the SIPs to traditional roof decking at these valleys?
Any and all advice will be greatly appreciated.
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