Sorry so slow getting back, I put answers int questions Thanks Matt --- On Mon, 8/30/10, Matt Lafferty <gilliga...@gmail.com> wrote:
> From: Matt Lafferty <gilliga...@gmail.com> > > Darryl, > > No answers. Just questions in search of answers. > > Is this a single-layer comp roof? Yes > Did the noises begin immediately after the install? YES (as far as I know) > Were there any questionable structural issues noted during > install? No > Is it possible that one or more bolts aren't completely > tightened? (Take a > good look at your footing to rail connections.)I will look again but it is > hard to see under modules) > Can you get into the attic and inspect the rafters/trusses? Yes I did > (Make sure you > don't have a busted rafter) I will double check > What was the temperature during install compared to normal > daytime highs It was warm, maybe 90F > when it's making all this racket? (I've heard of > winter-installs making > noise during the summer)Just finished the install so summer and summer noises > What does it sound like from outside the house? (i.e. is > the pitch or tone of the sounds very different) I will listen on Tuesday > Can the source of the sound be isolated to one point or > region? (i.e. only > on the longest rails)not so far > What is the temperature range like on the days it's being a > nuisance? (i.e. > 45-95, or 55-85, etc.) We have typically been 55 at night and 90 during the > day ((not roof temperature of course)) > Are these jumbo modules? (large modules have greater > absolute expansion > between attachments than smaller modules) No normal size > > When you go out there, be prepared to install a pair of > expansion splices > for each long rail set, but don't expect that to be the > silver bullet. > Unirac says you only need them every 45 feet. If your > situation is under > 30', I expect you have another problem. Installation manual > here: > http://www.unirac.com/pdf/ii908.pdf > > Pray for silent roofs, > > Matt Lafferty > > From: Darryl T > Subject: [RE-wrenches] roof noise after solar install. > > New roof asphalt shingle, 5.1 kW system, string inverter > makes roof noises > in the morning, and afternoon particularly after dark > > Creek and crack it finally stops late at night but restarts > late morning and > stops mid afternoon most days then intensifies after > dark. Timing seems to > follow temperature, has customer freeked > > Longest tun is 30 feet Unirack rail with top down > clamps. > Darryl > > > _______________________________________________ > List sponsored by Home Power magazine > > List Address: RE-wrenches@lists.re-wrenches.org > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org > > _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
