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PERM-A-BARRIER® Wall Flashing Questions

 

Perm-A-Barrier® Wall Flashing and Membrane Questions

How long can Perm-A-Barrier Wall Flashing and Membrane be exposed to sunlight?

Perm-A-Barrier Wall Flashing and Membrane should be covered within 30 days after installation.

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What temperatures can Perm-A-Barrier Wall Flashing and Membrane withstand in the cavity of double wythe masonry?

The softening point of Perm-A-Barrier Wall Flashing and Membrane is between 82-93 °C (180-200 °F). Temperatures greater than this may cause the membrane to liquefy and drip.

Can Perm-A-Barrier Wall Flashing be applied over asphaltic dampproofing?

Perm-A-Barrier Wall Flashing can be applied over asphaltic dampproofing when fully cured. Priming may be necessary to enhance the adhesion.

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Can Perm-A-Barrier Wall Flashing and Membrane be installed over EPDM (Ethylene Propylene Diene Monomer)?

Perm-A-Barrier Wall Flashing and Membrane should not be installed over EPDM. However, EPDM can be installed over Perm-A-Barrier Wall Flashing and Membrane.
Is metal drip edge required when using Perm-A-Barrier Wall Flashing?
Using a metal drip edge in conjunction with Perm-A-Barrier Wall Flashing would be a "belt and suspenders" detail, but is not necessary.

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