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Posted by Raider Bill on October 21, 2006, 2:05 am
I've heard SIPS mentioned before somewhere else. What are they? Pre
made panels with foam and plywood?
I do want a metal roof, but am open to siding and interior wall
suggestions. I do want the log look.
I'm leaning way towards a crawl space. I like to access and being able
to get under there to run whatever may need to be such as wires, pipes
and even some storage. I have that here at my house in Fl, very
uncommon in this area and have used it many times.
I was going to slab on grade then stamp and stain the concrete, call it
done but I kept coming back to the crawl space access.
This project has been down sized a bunch since inception, the 12 foot
ceilings may shrink.
I have a bunch to do before building, this and has nothing,
Matt Whiting wrote:
> Bob Morrison wrote:
> > In a previous post Matt Whiting wrote...
> >
> >>Bob, how much experience do you have with SIPS? They look good in
> >>theory, but I've heard a few folks that had problems with them in roof
> >>applications. The scuttlebutt is that the top layer of OSB gets damp
> >>during humid periods followed by cooler weather. Since the underside of
> >>the OSB is effectively sealed by the foam, the moisture can only go back
> >>through the shingles from whence it came and hence problems with mold
> >>and rot.
> >>
> >>I haven't seen this myself, but one of the professor in a recent
> >>graduate course I took is a structural engineer for a timber frame
> >>company and he said they haven't had good lunch with SIPS in roofs
> >>unless they fur the top and apply a second layer of sheathing to allow
> >>air circulation between the top layer of the SIP and the sheathing.
> >>Obviously, this requires installation of soffit and ridge vents.
> >>
> >
> >
> > Matt:
> >
> > I haven't heard about any problems. Perhaps it is because the few
> > projects I've been involved with had metal roofs, which tend to breathe a
> > bit better than conventional roofing.
>
> Yes, metal almost always has stiffening seams of some sort that provide
> a path for ventilation. My professor was talking about asphalt shingled
> roofs located in the Vermont/NH area mainly. I haven't heard of
> problems in my area, but then I've seen very few buildings put up using
> SIPS. Had I chosen timber frame rather than logs for my house, I would
> have used SIPS.
>
>
> Matt
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