ICBO/IBC TeifsFlex/TeifsAirtight ER-5199

ESR Teifs Drainage Systems ESR-1935

ESR Teifs Weatherseal ESR-2045

ICBO/IBC Teifs One-Coat Stucco ER-5877

BOCA International Teifs Drainage Systems 98-13

SBCCI TeifsFlex 9841

Texas Department of Insurance, Product Evaluation EC-48