I am looking to put 2" XPS against my basement walls (southern NH) and recently started looking at "reclaimed" material. I know I can get new OC F250 from Home Depot for $17.25 per board (2"x2'x8'), but just heard from someone that has reclaimed Dow XPS boards - for $4.40 per board!
The pic provided has DOW Styrofoam in the diamond logo and RM extruded under it to the right.
I think I am looking at an older version of Dow ROOFMATE XPS, the spec sheet shows the same R10 value for 2" XPS. Is there any reason I shouldn't use this in my basement? I plan to put up the XPS and then a drywall in front of it with more R13 insulation. Other than the reclaimed stuff being dirty - is there any issue?
PS. Any thoughts on what I should do on top of my concrete wall where the wires are run?
Basement XPS installation
I am thinking of cutting the top piece of XPS short and using Great Stuff foam to seal the wires in.....