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Frequently Asked Questions

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Procor Questions

Perm-A-Barrier® Wall Flashing Questions

Procor Questions

Where should Procor be used?

Procor is intended for use as either a below grade and deck waterproofing material (with separate protection course), or as an above-grade air and vapor barrier.

Can Procor be applied to green or damp concrete?

Procor waterproofing membranes may be applied onto "green" concrete or over damp substrates. Remove any visible water prior to application. Once applied, Procor membranes will not be affected by light rain showers.


Can Procor be used for indoor waterproofing applications?

Procor membranes are water-based and virtually odorless. This makes them ideally suited for interior applications such as kitchens, mechanical rooms, bathrooms, laboratories, and wet rooms. Procor membranes are also appropriate for use in planters and other jobs where the use of solvents is restricted.

Is Procor compatible with spray applied polyurethane foam insulation?

Spray polyurethane foam insulation is compatible with Procor membranes. It will adhere to Procor when used as an exterior insulation in air and vapor barrier applications. Procor membranes adhere well to cured polyurethane foam insulation.


How are Procor membranes applied?

Procor 75 is a spray application material. Procor 10 & 20 are applied by trowel. Procor may not be applied by brush, roller or rubber squeegee.

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.


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.


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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