House wrap over Zip or Forcefield
djmissions
| Posted in General Questions on
Is it possible to use a house wrap with a built-rain screen over Zip system or Forcefield sheathing without causing a moisture problem between the two barriers? I already have the house wrap and the house is being sided with LP smartside b&b.
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Replies
As long as the product has comparable or greater permeance than Zip, you're not really changing the drying potential of the assembly.
djmissions,
Yes, but be aware that the dimpled house-wraps provide very few of the benefits a full rain-screen does.
There's this document from Huber about Housewrap.
https://www.huberwood.com/uploads/documents/technical/Housewrap-over-ZIP-System-sheathing-Tech-Tip-Wall-ZIP-System_2021-08-03-194820_dijx.pdf
They do recommend layers of housewrap for stucco but I don't know if they require it for other types of cladding.
I know there's a Huber Peel & Stick product for roofs but I don't know if it can be used for walls.
https://www.huberwood.com/uploads/documents/technical/ZIP-System-Peel-and-Stick-Underlayment-Sales-sheet-SEC.pdf