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Old 06-27-2014, 11:59 PM   #1
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When/where is ice and water shield generally installed?


Besides meeting local code, what are the application scenarios for it?

Eaves?
Valleys?
Low pitched roofs?
Around vent/pipe flashings?
Near walls?

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Old 06-28-2014, 05:00 AM   #2
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When/where is ice and water shield generally installed?


All of those. Cover the I+W with felt or synthetic underlayment, otherwise the next guy will have to tear off the sheathing too.

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Old 06-28-2014, 06:12 AM   #3
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When/where is ice and water shield generally installed?


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Besides meeting local code, what are the application scenarios for it?

Eaves?
Valleys?
Low pitched roofs?
Around vent/pipe flashings?
Near walls?
How does your local code read?

For those that don't have codes for I/W shield it is generally installed from the eaves up and beyond the building line a short distance. That's for those people that believe it will solve their water in the walls problem when ice dams occur and that is basically true if the installer gets a 100 percent seal.

What those who write codes and others don't know is water will find its way into the attic in other areas when the eaves area is successfully blocked from water intrusion during an ice dam problem.

Can the whole roof be covered in an attempt to curtail water intrusion? Sure. Will a roofing company guarantee 100 percent their installation of I/Water shield will not all any water to enter during ice dams? I highly doubt it.
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Old 06-28-2014, 10:53 AM   #4
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When/where is ice and water shield generally installed?


Where to find the local code info for ones city, county, state?
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Old 06-28-2014, 03:27 PM   #5
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When/where is ice and water shield generally installed?


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Where to find the local code info for ones city, county, state?
Google the IRC or just call your local office.
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Old 06-30-2014, 08:33 PM   #6
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When/where is ice and water shield generally installed?


Minimum 2 feet inside the exterior wall line at the eaves is the rule of thumb. I spec the drip and rakes to be enveloped with a 12 and 18 inch piece of Ice Dams Membrane. The flange of the drip is sandwitched between Ice dams.
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Old 06-30-2014, 08:34 PM   #7
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When/where is ice and water shield generally installed?


Minimum 2 feet inside the exterior wall line at the eaves is the rule of thumb. I spec the drip and rakes to be enveloped with a 12 and 18 inch piece of Ice Dams Membrane. The flange of the drip is sandwiched between Ice dams.

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