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Building new home – Exterior insulation

marygordo | Posted in Energy Efficiency and Durability on

* Building a new home
* Plan on plywood sheathing
* use a fluid applied WRB to the plywood
* next layer to be mineral wool batts
* and then this product over the batts. . .

Thoughts, opinions?

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  1. Expert Member
    Akos | | #1

    Just to make sure, you are looking at the insofast for on the interior side? There is no reason it won't work, just not something trades are familiar with so it might cost more to install.

    In zone 4, I don't think there is all that much energy saved with high R value walls, I would skip rigid insulation.

    2x6 walls with high density batts (R24) is good enough. If you want a bit more, you can look at 2x8 24" OC with R30 batts.

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