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Originally Posted by XCR-700
Those are really good prices, you dont get these down here,,, Smart shoppers should be doing business with you and saving a bundle as the "box stores" charge considerably more.
That said, if you only look at the cost of the sheathing you fail to take into account the cost of the Tyvek and the labor to install it.
Builders are not using zip board because its better.
Construction is a complex business and unfortunately far too many people do not get what they paid for and fly by night contractors take the money and run. Hard to find home builders who have been in business for 20+ years under the same name and not been through several big law suits. Even less so for their subs like framing teams, they seem to come and go like used car lots.
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Tyvek would add about $7-9 per sheet; but you hit on it for the labor. The party contracting for the building is looking for the cheapest price for the largest square footage... they figure a 30 year warranty when done correctly, it better than a 10 year warranty when done correctly... and see the lower cost in labor that is hard to come by. Hence why they don't ask for OSB with a separate WRB, which would be less expensive in materials... but more in labor. It may be close to the same price, but they don't realize how many rules will void that 30 year warranty... the labor must be very precise.
Smaller homes with higher grades of construction in both materials and labor are just not currently in-demand. It would be like having lake front property where the house is set too far back to be open and well seen by the lake. If the people on the lake can't see the house, the people in the house can't readily see the lake... they would need to go outside and walk down to the shore... not in-demand.
One of the Zip products that I am looking at is the R Zip. They are looking to change the building code to require insulation beyond the studs to create a thermal break. Around window and doors this would be a ThermalBuck... they have a complete system that we are currently comparing to the R Zip that is on our buildings. We don't have an answer for customers yet... but we researching the systems. If that becomes code, it will be a big change for most of us.