Drawbacks to using both tyvek housewrap and ridgid foam vapor barriers together?

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Posted by: from Rome
8/9/2016 at 9:16:09 AM

I'm re-siding my cape cod style home in Central NY built in 1953. I've removed the wooden clapboards that are original to the house and revealed a feltboard wrapped in tarpaper. I've wrapped the house in tyvek and I planned to cover the wrap with ridgid foam then side the house with vinyl.

The intention of the ridgid foam is primarily for insulation, but I've had a few of my contractor buddies tell me doubling up on the vapor barrier is a bad move. I don't want to pay extra for something that may not be benficial.

Any suggestions?

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