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VonTed 02-14-2013 06:03 AM

DOW Styrofoam RM vs Owen Corning F250
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?

I am thinking of cutting the top piece of XPS short and using Great Stuff foam to seal the wires in.....

AGWhitehouse 02-14-2013 10:17 AM

Extruded Polystyrene is Extruded Polystyrene...go for it!

VonTed 02-21-2013 05:54 AM

I pulled the trigger and had it delivered..... and oh my are they filthy. The one pictured above is sparkling clean in comparison.

It there a good, quick way to clean extensive dirt/grime of these things? Can I pressure wash them, or will that harm the material? What about cleaning products, will they soak in to the material or anything like that?

House2HomeLLC 02-21-2013 08:55 AM

My guess is most of that dirt/dust is clinging on by static. Using a regular garden hose should be sufficient.

VonTed 02-21-2013 09:06 AM

Yeah, I thought I'd try the non-powered version first :)

I think I'll it a try this afternoon, it is supposed to be SEVERAL degrees above freezing!

VonTed 03-25-2013 05:45 PM

Well it did get much cleaner, but still "dirty" - usable. And I did find a 10% drop out from ruined panels or significant damage. Not sure it was worth the extra work.... but it is installed :)

Windows on Wash 03-26-2013 07:22 AM

It was worth it. For the price you got it and for the fact that you are keeping it out of the landfills.

Good job.

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