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Jason from Saint Petersburg, Florida writes

When spraying the underside of the roof iwill Bora Care damage any asphalt underlayment that is exposed to the

I have a flat roof and removed the drywall ceiling to find the roof boards are spaced apart by an inch or less and I can see the roofing underlayment. I want to protect the wood with Bora Care but don't want it to compromise the roofing material.

Answer:

Bora-Care will only penetrate into the wood that is sprayed/brushed on directly.  It would not harm the underlayment.

Answer last updated on: 05/21/2023

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