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Old 08-14-17, 05:21 PM   #1
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Default ICF insulation improvement ?

Im preparing to build a passive ICF rancher with a crawl space next year could use some schooled advice on the insulated blocks insulation and condensation.

The blocks use 2 inches of insulation for both the inner and outer wall so the center of the wall is the cold/warm meeting point.

Do they do this to prevent condensation or just ease of manufacture ?

Im thinking (oh no)

I want to add an additional 2 inches of insulation to the outside wall to push the meeting point to the outside of the concrete instead of the inside as designed.

My worry is it will cause condensation to form on the outside of the concrete wall and insulation face causing mildew ?

could use tips or advice what do you think , 4 inches insulation on the outside concrete wall 2 inches on the inside is a good idea or bad ?


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