Validation Program FAQs

1. I require independent test data from manufacturers now. They often delay until I have no choice but to accept data sheet statistics to keep on schedule. How long will I have to wait to get Validation data?

   If the product has been validated, SWR Institute will fax or mail the actual laboratory report to you within 48 hours of your request.

2. Most data sheets claim a plus or minus percent movement now. I use this in my joint design calculations. Is this an accurate method?

   The C 719 test must be done to validate the movement as listed in the SWR Institute Data Screen. Regardless of what may be stated or implied elsewhere on the manufacturers data sheet. Be sure you use the specific manufacturer's joint design criteria for their product on your specific application.

3. What if a manufacturer changes their formulation after being validated?

   If the validated product is changed, it must be re-validated.

4. How do I know whether the Validation has expired?

   The date of validation and the expiration date are displayed on the SWR Institute Seal of Validation.

5. What if ASTM changes one of the test procedures?

   If the change is significant, unexpired validated products may be required to revalidate with the new procedure. However, all testing is done with the most current test updates.

6. Can any type of sealant be validated?

   Yes

7. Why are there only two tests? ASTM C 920 has many more.

   C 719 and C 661 are the significant tests to show performance as a joint sealant.

8. Are you saying the other C 920 tests aren't as important?

   All of the criteria tests of ASTM C 920 have an importance in sealant joint design. However, the two tests for validation deal with the capability of a sealant to perform as a seal, its primary function.

9. Are manufacturers required to validate their products?

   The SWR Institute Sealant Validation Program is entirely voluntary.
   
   If you have any questions that were not answered here, please contact us.