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Is There a Specific Width of Butyl Tape to Use When Installing a Roof Vent with Fan

Question:

Which width butyl tape is required for this vent fan? Is 3/16inch thickness recommended? Thank you

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Expert Reply:

When installing the MaxxFan Roof Vent w/ 12V Fan # MA00A04301K, there is not a required butyl tape width. You just need to ensure that the butyl tape covers the screw holes.

The Alpha Systems Butyl Tape for RV Weatherproofing # AL33FJ is 3/4" wide and would be sufficient to use for installing the roof vent. It is 3/16" thick, we do recommend that you use butyl tape that is at least 3/16" thick.

You will also want to use some LaSalle Bristol XTRM Universal Self-Leveling Sealant # 34427034145-1 when installing the roof vent.

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Scott S

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