20 years. Styrofoam glued did not last long. Maybe a year or two. But the frothpak foam has been there for years and years.
From: Eric Kuhnke Sent: Friday, January 08, 2016 3:43 PM To: [email protected] Subject: [AFMUG] Expanding foam or styrofoam glued to rear of solar panels Those of you who have done this for snow/ice buildup reasons, how are your panel temperatures in mid summer, and how are the panels holding up? How many years has the insulation been in place?
