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Old 11-21-2010, 02:42 PM   #1
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ice and sleet shield under rubber roofing


We are having rubber roofing installed over a flat garage roof - someone has suggested putting the ice shield underneath. Thoughts on this?

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Old 11-21-2010, 04:14 PM   #2
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ice and sleet shield under rubber roofing


If the "rubber' (modified bitumen?) roof is properly installed, no additional water barrier is required below the membrane.

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Old 11-21-2010, 06:04 PM   #3
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ice and sleet shield under rubber roofing


Rubber and mod-bit-2 different animals
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Old 11-21-2010, 06:29 PM   #4
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ice and sleet shield under rubber roofing


"rubber" is a pretty generic misnomer. Regardless, no flat-roof system requires ice/water added as a component.

If your membrane fails, ice/water is going to do absolutely nothing to save you.
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