I am in the process of building an all brick house and had intentions of buying a radiant barrier (Wraptor Plus) house warp for my house in Northern Arkansas (zone 4). The product I wanted was unavailable locally so I ordered it from a building supply store out of state. I made a mistake and ordered the wrong product (regular Wraptor), so now I have a cheap woven house wrap instead which is not what I want to install. The data sheet on what I have is at this link: http://www.insulationsolutions.com/content/pdfs/wraptor/data-sheet.pdf
I am looking for advice if I should install what I have or go buy tyvek housewrap, which I can get locally. With either product I was planning on taping the OSB seams with 3m flashing tape prior to housewrap going on. The exterior will be brick with a 1″ air gap.
The other option is to buy foil faced 1/2″ polyiso (1/2″ is the most I can fit and maintain a 1″ air gap) and install over the woven house wrap. Then tape the seams of the foam. This gives me an extra R3 of insulation, helps a little with thermal bridging, and provides another layer over the housewrap at not much more cost over buying tyvek. Would this prevent drying to the outside in my climate zone?
Any advise is appreciated. Thank you
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