Melting EPS Foam with EIFS Synthetic Stucco
Our EIFS synthetic stucco has been loosing its flatness. See the attached pictures. It has now happened 2 summers in a row. the same thing happened last year and the the subcontractor fixed it has his expense thinking it was an application defect.
This year it has happened again in the same spot. My General and Sub contractor are telling me the sun is being reflected off the 2 windows (shown in the second picture) and concentrating the sun enough that the EPS is melting. It seems plausible considering you can see a flat spot between the two deformed areas which I assume is where the header is.
Our EIFS is one of the Masterwall systems and I think IIRC we have 4.5″ of EPS foam.
Have you heard of this before?
Any suggested solutions?
Can you get foam with a higher melting point?
I thought about putting shutters on the outside of those windows to stop the suns reflection but that will change the look of that wall but clearly better than damaged EIFS.
I’m going to put a thermal camera on the area this afternoon to see what kind of temperatures we are getting.
Thanks for the help.
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