New home construction metal roof install

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New home construction metal roof install

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So everything sounds okay but would be better with a layer of rigid foam for thermal break. How thick, what kind and do you put the double bubble over or under it. So as I am understanding it (vaulted ceiling>closed cell spray foam>roof sheathing>rigid foam insulation>dble bubble foil layer>standing seam metal roof?) Thanks
Guest User
2013-12-11 10:10:14.000000
No rafters. Vaulted Engineered trusses 24" on center with about 2 feet of space to insulate. I can insulate on top of sheathing 3 inches if budget allows. Will have to check into price but you lost me after that I am confused by sleepers. I assume you are referring to furring strips? Also, what do you mean by over deck venting? Are basically stating to build a roof over a roof? Thanks
Guest User
2013-12-11 18:54:47.000000
Huge moisture problem in me house - not yet moved in. Standing seam roof over tar paper? Spray foam and cellulose. Gable Vent and ridge vent.
Guest User
2014-01-06 23:32:00.000000
I had a metal roof installed on a new home 3 years ago. The contractor placed the metal roofing over horizontal perlings that were attached and to rafters. There is no moisture barrier. Fiberglass insulation is between the rafters. And the ceiling is a tongue and groove pine. Since we moved in, we have a lot of air drafts coming down from the ceiling along each wall. If it's windy during a storm, we will get water streaming down the outside walls. And eventually, water coming in between the tongue and groove pine. Should there be a waterproof barrier like felt paper or styrofoam, and any sheeting material like OSB? The insurance will pay to dry out the walls and to repaint. But since there is no signs of wind damage to the roof, they will not cover repairs. The contractor is avoiding us.
Guest User
2015-07-14 19:14:45.000000
I'm building a hunting cabin this spring and I have a roofing question. On a roof design with a 12 /12 pitch and 2 x 10 rafters spaced 24" apart, I'm planning on using 3/4" OSB sheeting, Do I protect my sheeting with tar paper than use double sided foil, than perlins over the foil to support my steel roof? If you could get me straighten out, I would welcome any help. Thanks.
Guest User
2016-12-29 13:31:57.000000
Hi my question is we have a metal awning I believe it's metal that my husband used as the roof when he enclosed Our Deck to make it into a sunroom we are now seeing wet stains on the ceiling that I'm guessing is from condensation this is also insulated so I'm guessing the insulation is probably wet what can we use once we tear down the ceiling to stop this condensation thank you very much
Guest User
2017-01-09 12:21:09.000000
thank you for getting back to me my second question will be what is a vapor barrier and does it go between the roof and the insulation ?
Guest User
2017-01-09 13:41:58.000000
First of all, thank you for choosing metal. Based upon what I know here from your post, I do not see any detriment from installing the radiant barrier. However, yes, radiant barriers need an airspace to be effective. In this case, the "bubble" part is going to serve that purpose. My advice is this -- despite the claims I personally feel that in this application, the benefit of the radiant barrier will be minimal. Therefore, I would not pay much for it. You might also want to ask them for comparative energy studies for situations exactly like yours. I doubt they have any but it's worth asking,
Todd Miller
2013-12-11 04:59:17.000000
Elizabeth, please give me a call at my office at 1-800-543-8938 ext 201 and we will talk this through and hopefully figure out what is going on. For one thing, if you do not yet have drywall and a vapor barrier on your ceilings, then more humidity is reaching this area than should.
Todd Miller
2014-01-07 05:08:38.000000
Yes, I would install underlayment even though the radiant barrier will then be installed.
Todd Miller
2016-12-29 13:56:44.000000
If it is condensation, then you will need a complete vapor barrier between the living space and the roof -- to make sure that warm moist air from the living space does not reach the cool roof and condense.
Todd Miller
2017-01-09 13:38:23.000000
A vapor barrier is commonly a heavy polyethylene, seams taped, and taped around the edges and any penetrations. It needs to go between your ceiling and the insulation. Moving it above the insulation (toward the outside) would be a mistake.
Todd Miller
2017-01-09 13:47:24.000000
Metal roof will be installed over vaulted ceiling with 12' tall walls. Plan to have closed cell spray foam for insulation. Metal roofing company wants to install some sort of double bubble foil facing outward. I was wondering if this would be best practice for metal roof or is there a better way. Have read about foil and condensation issues or waste of money without air space. So to sum it up (Vaulted ceiling>closed cell spray foam>roof sheathing>double bubble foil facing out>standing seam metal roof). Just want it done correctly without any issues and need professional advice so I am informed when speaking with contractor. If this is not correct then please state the proper sequence for best practices when installing metal roof. Thanks
Thad Opat
2013-12-11 01:11:58.000000
+1 You need to have an airspace as Todd mentions for a radiant barrier to work. Otherwise, it is like insulating with tin foil...not effective. If the home is new construction, I would love to see some over deck venting a layer of rigid foam to the outside of the roof structure to uncouple the framing from the insulation equation. +1 on using metal and please keep us posted with some pictures.
Eric Novotny
2013-12-11 07:57:23.000000
What size are the rafters? I would love to see 3-4" of rigid foam (poly iso with the last foil layer out), sleepers and plywood with some over deck venting, and then the roof. You could use just a tiny bit of foam inside the rafters that that point for the air seal and fill the remaining cavity with regular fiberglass or less expensive materials.
Eric Novotny
2013-12-11 12:13:38.000000
Yes. Furring strips and some over deck ventilation.
Eric Novotny
2013-12-15 09:42:57.000000
+1 Gotta know more about the home, area, construction, etc. Please contact Todd with all the details or post them up.
Eric Novotny
2014-01-07 08:06:21.000000
Picture of the outside?
Eric Novotny
2015-07-14 19:38:09.000000
Yes. You need an airspace for any sort of radiant barrier to work properly.
Eric Novotny
2016-12-30 11:14:24.000000