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gtojohn · 03-20-15, 11:06 AM

I'm mostly looking at iso because it had a slightly higher r value than the xps. The xps I've seen is tongue and groove but the iso isn't. Regardless I'll tape my joints.

03-20-15, 11:06 AM	#11
gtojohn Journeyman EcoRenovator Join Date: Jul 2014 Location: Austin, TX Posts: 314 Thanks: 39 Thanked 50 Times in 45 Posts	I'm mostly looking at iso because it had a slightly higher r value than the xps. The xps I've seen is tongue and groove but the iso isn't. Regardless I'll tape my joints.