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Is Butyl Liquid Rubber compatible with Grace Ultra underlayment?

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The manufacture claims that Grace Ultra is Compatible with your Butyl liquid Rubber  and TPO low slope membranes. GRACE ULTRA™ butyl roofing underlayment is composed of two waterproofing materials—an aggressive 100% butyl rubber adhesive backed by a layer of high density cross laminated polyethylene film.

Can Butyl  Liquid Rubber be applied directly on top of Grace Ulta?
asked Oct 18, 2018 in Liquid Butyl Rubber by Joe S
edited Jun 3, 2021 by admin

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Butyl liquid rubber can be applied to any 3rd party coatings , It does not need a primer

Thank  you
answered Oct 18, 2018 by admin
edited Jun 3, 2021 by admin