Here in NW Colorado we had the toughest winter in years.
There was 6ft of snow on our roof, and too hard to pull off with a roof rake.
During the melt a hugh piece of ice came crashing down, and put a large (3ft) dent in our roof SIPs. (In the opposing valley)
the insurance adjuster implied he would want the entire panel replaced. The celing is T&G pine applied when the panels were manufactured. It would be impossible to match the color. Standing seam metal roofing.
Any thoughts on how to effect this repair?
Stef
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Replies
fatboy2
If it were my SIP's I'd want the insurance company to pay for complete replacement as well.. however I'd be tempted to effect a repair without that sort of expense and mess.
What I'd do is drill a large diameter hole into the OSB and try to pressurize the dent out with compressed air.
If that failed I'd be tempted to cut out the surface damage and compressed foam and try to cut a piece of foam to fit the resulting dent.. shave ---cut--- try the fit shave some more etc. when it was close I'd spray some foam into the resulting gaps and fit a new sheet of OSB over the smashed OSB.. The metal roof will need a new panel/s.
Thanks Frenchy
I had thought there must be some sort of workaround. I'll suggest that when the roofer comes to relace the standing seam.
BTW, I for one have missed you around here as of late
Stef
That is just nuts if the SIP is structural. If it is post and beam with the SIPS as infill panels maybe it could work. I would expect that it will disbond the skin from the core, rendering the panel structurally useless.
I might try it if the engineers at the SIP manufacturer said they thought it would work, but I am pretty sure they won't. I sure as hell wouldn't want the liability.
jigs-n-fixtures
You could be right.. I simply gave an option to consider..
Damaged roofs require a great deal of thought and consideration.. No matter what type of construction..
For example the dent was reported to be about 3 feet in area but that doesn't tell us how deep the dent is. If it's shallow and the OSB is unbroken. Compressed air might raise it enough to allow spray in foam to be used to make up the differance..
The dent is about 3-4in deep, and the osb is crushed, although not "pierced". The screws which fastened it to the underlying log have pierced the Metal roof, and are standing about an inch proud of he present indented surface. The "wound" is over the eaves, not in the structural part of the SIP. There is about a 3ft roof overhang.
Stef
fatboy2
If you can accept that the finished are will be structurally weaker than the surrounding area then such a repair makes sense.. you won't loose any R value on an overhang and I can tell you from actual experiannce that the spray foam is extremely powerful.
While I was building my house and had the ceiling panel to walk on. Putting up my tower myself and my helper used to stand nearly seven feet out on a piece of SIP cantalevered from the roof held in place with only the spray foam while we hoisted our timbers up into place towards the end I actually propped a ladder on that piece of cantalievered SIP panel (again held up in place with nothing more than the sprayed foam while I installed the top timbers.
I know it sounds scary but we'd tested it like you do when you walk out on thin ice.. jumping up and down to test it's ability to hold you before venturing out a little further..
No I don't recommend it in every situation but in our case that panels stayed rigid as heck untill we actually sawed it off.
Thanks Frenchy,
The idea of tearing the entire panel off, having been placed by a large crane, and beating it in place to get the T&G to engage is terrifying.
Also, having the house open like that. We get some spectacular, sudden rain showers up here.
I think I'll go with your idea.
Stef
Fatboy2
I think based on what I understand your situation to be that is a wize choice. If it were my place and the insurance company agreed that to do a proper repair the panel should be replaced I'd insist that they replace the whole roof section .. doing a solid safe workman like reconnection between panels isn't likely to occur..
Panels should not only be connected by those splines but glued together. In addition they are then screwed down in place.
Since the damage doesn't sound like it's structural but rather more cosmetic That sounds like an economical repair that should work OK.
Just an average guy's opinion here...
If the damaged area is over the eave, then the insulation value is no concern. In other words, if the bottom and top surfaces of the panel are exposed to outside temps, there's no need to replace the foam.
How about removing the metal roofing in that section, glue/nail sheathing over the entire section, then replace the standing seam roof? If you wanted to go to the trouble, you could inject foam under the new sheathing to fill the void. (Use low-rise foam so you don't end up with a bubble!!)
Structurally, it'd be plenty strong. And it would be a heck of a lot cheaper/easier than replacing the SIPs or digging them out and repairing.
Just a thought.
"Listen, strange women lying in ponds distributing swords is no basis for a system of government."Jon
Hector45
That makes a lot of sense to me.. plus it would save all the work I suggested..
I was thinking along the same lines Hector. I'd probably have that patch done in 30 minutes. The steel roofing would be a different beast but structurally, if it ain't broke..don't fix it! This sounds like a cosmetic fix. If it was structural, it would have already failed in "the worst winter on record". Bob's next test date: 12/10/07
Worst winter in years? I'm not far from Denver and hardly had any winter (unlike a few years ago). Now its drought conditions and trying to be the driest year on record--worst than 2005. I think we just tied the 100 year record for continuous days over 90.
Now if we could just even this all out my lawn would be green and your roof wouldn't be damaged.
So should "ifs" and "buts" were candy and nuts we would all have a Merry Christmas! Tyr