Originally Posted By: pdickerson
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http://www.nachi.org/bbsystem/usrimages/P/P1130047.JPG ]
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http://www.nachi.org/bbsystem/usrimages/P/P1130047.JPG ]
[ Image: http://www.nachi.org/bbsystem/usrimages/P/P1130107.JPG ]
Originally Posted By: pdickerson
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I am almost done with the report. If anyone has any comments, let’s hear them.
Originally Posted By: bking
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if ventilated you would be ventilating the heated living space if I understand this correctly. Only problem is lack of insulation / waste of energy.
Originally Posted By: lkage
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Are you sure there isn’t rigid insulation sheets in there somewhere?
My report lists the type and thickness of insulation but if it is not visible that's what I report.
Possibly: "There doesn't appear to be any insulation installed in the roof structure of the home."
--
"I have never met a man so ignorant that I couldn't learn something from him."
Galileo Galilei
Originally Posted By: pdickerson
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I looked carefully at the eaves, and there does not appear to be any rigid insulation above the t&g decking. If there is, it is small.
What happens when the warm moisture laden air from the interior infiltrates through the t&g and cools?
Originally Posted By: mcyr
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Paul;
I can't be sure from the pictures, but looks to me that the width depth of the wood beams and the 2x6 decking at the sofitt and the dimensional height of the rain gutter back, that there could be a 3" polyisocynorate insulation with a 1/2" OSB and then the standing seam roof.
Marcel
Originally Posted By: lkage
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| mcyr wrote: |
|  
Paul; I can't be sure from the pictures, but looks to me that the width depth of the wood beams and the 2x6 decking at the sofitt and the dimensional height of the rain gutter back, that there could be a 3" polyisocynorate insulation with a 1/2" OSB and then the standing seam roof. Marcel |
...and that would mean an R value of 18 to 21 or so (about 1/2 of what we would want in Michigan). Still not much for a roof system but better than nothing.
--
"I have never met a man so ignorant that I couldn't learn something from him."
Galileo Galilei
Originally Posted By: waksell
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I once knew a contractor that built a Bar. Roof structure was doubled 2X? trusses, and 2X6 T&G decking, asphalt shingles, no insulation. I asked about insulation and was told the 2X6 T&G had enough insulating value, (this is Florida). Could have been BS, I don’t know. Is it possible that the wood has some R-Value, combined with some insulation like “lkage” mentioned, may meet the necessary requirement? Just a thought. Either way, report what you see.
Wes
Originally Posted By: lkage
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| waksell wrote: |
| I once knew a contractor that built a Bar. Roof structure was doubled 2X? trusses, and 2X6 T&G decking, asphalt shingles, no insulation. I asked about insulation and was told the 2X6 T&G had enough insulating value, (this is Florida). Could have been BS, I don't know. Is it possible that the wood has some R-Value, combined with some insulation like "lkage" mentioned, may meet the necessary requirement? Just a thought. Either way, report what you see.
Wes |
Wood, I think, has an R value of about 1.4 per inch for softwood, less for hardwood.
--
"I have never met a man so ignorant that I couldn't learn something from him."
Galileo Galilei
Originally Posted By: bkelly2
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http://coloradoenergy.org/procorner/stuff/r-values.htm
–
“I used to be disgusted, Now I try to Be amused”-Elvis Costello
Originally Posted By: mcyr
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Going back to Paul's original question, I would have to add that we are all guessing at what may be existing conditions at the time of Pauls' report.
I assume Paul wrote out his report by now, and Paul, I would be curious as to what you said, considering all the conclusions everyone said as to what it might be. I would gather that you reported the fact that,
The roof construction does not depict any roof ventilation and the amount of insulation in the roof assembly can not be determined by this inspection, and would recommend a prominent building contractor or roofing specialist to determine the extremities of the composite of the roof system.
Being built in the 70's I can relate to an airspace only above the T&G planking with some sort of venting at the peak. I don't think we asked you that question.
Wish I could be of more help.
Marcel
Originally Posted By: pdickerson
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Marcel,
My report was very similar to the statements in your post. I also had quite a long discussion with the client about possible construction methods in the concealed area and implications of each. My gut tells me that the roof is not insulated. The home is in a place where that are a lot of summer homes; The plumbing has a drain valve to "winterize" it; There is no insulation in the crawlspace. I warned my client that the home may never have been occupied during the cold winter months, and that heating it in the cold months might result in condensation in the roof/ceiling. I told him that this was just speculation, but that he should be aware of it. We also talked about what it would entail to insulate the home. I think he was well served by the report and the verbal comments as well.
Originally Posted By: mcyr
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Paul;
Sounds like you did your job very well and I congratulate you in verbally instructing and educating your client. From those words, I can tell you did your best. I hope your client appreciates it and brings you more work.
I am sure your report also dictated what you saw and not necessarily exposed all you said to educate the client.
If the client learned something out of this, that is the only thing he will remember and spread it around which will help your business.
Marcel