This database is intended to give a general indication of the resistance of Polyguard Underseal® to penetration by contaminants.

Users should note that this is a general guideline, and should not be noted as a guarantee of performance. The field of chemically resistant barriers used in construction is extremely complex. Users should work closely with Polyguard technical personnel prior to relying on the information shown here.

Description of the Database:

The database is maintained alphabetically by contaminant. Users should find the contaminant of concern, then see if there is an Underseal® barrier system which offers sufficient resistance.
Expected resistance is expressed as follows:

Expected Resistance of Polyguard Underseal® Contaminant Barriers

A = Excellent:
B = Good
C = Fair
D = Poor

Note that the expected performance is given as a range. This is because of the great number of variables which can impact performance. A few of these variables are listed in the table below:

Partial List of Variables Affecting Resistance to Contaminants

Brownfield
Site
Variables

Project
Design
Variables

Barrier
Specification
Variables

Construction
Variables

Underseal® Developmental Products:

In the database, expected performance ratings can be found not only for Polyguard established Underseal® products, but also for developmental Underseal products. These developmental products are all on a schedule to be introduced within the next 12 months. Some of them are at the beta (field trial marketing) stage. Polyguard technical personnel can provide more specifics about the stage of these products.

“NT” or Not Tested Explanation:

Many of the contaminants in the database are marked “Not Tested”. This means that as of yet we have not evaluated the contaminant. If you are concerned about a contaminant which is indicated as “not tested”, please contact Polyguard for discussion. In most cases Polyguard will be able to provide an indication of likely performance if given the project details. In some cases we may have the equipment and materials available to do preliminary testing with the contaminant in question.

Evolution of the Database:

Polyguard Products intends for this database to evolve and become more and more complete over time. As we gain more experience with the many hundreds of contaminants, the database will be updated to reflect this learning. In the meantime, if you have any suggestions concerning how the database could be improved, please let our webmaster know. e-mail webmaster

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RESISTANCE OF POLYGUARD UNDERSEAL® TO CONTAMINANTS DATABASE

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