If you see frost lines where studs are does that mean heat loss and insulation failure?

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Do frost lines where studs are on a wall show a failure of spray foam insulation?

Gerald Crozier Published: July 22, 2019, 10:24 p.m.Last updated: Aug. 4, 2020, 12:44 p.m.

I have a customer with frost problems whose home shows every stud from the outside on a winter day. Would you say their spray foam insulation has failed?

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