Steico Universal Dry versus Rockwool Comfortboard
Can people weigh in on 2″ Steico Universal Dry (R6.15) versus 2″ Rockwool Comfortboard (R 8) for exterior insulation? There is a good source for the Steico close by and it is less expensive. We are building in Virginia so our winters are not as tough as up north so losing 2 R is doable. The Rockwool has better fire performance but the installation of the Steico is appealing with a simple tongue in groove board system that can stack up quickly. I am leaning toward the Rockwool because of our humidity and critters but I am trying to stay open to a wood fiber product. If anyone has taken a drive in West Virginia you will see signs objecting to the environmental damage of rockwool.
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