For all those interested in taking a BPI (Building Performance Institute) class and getting you certification it just got easier. STI has just been approved as a test center. So now you can take the class and the test at the same location. We can offer the Building Analyst (BA) and Residential Building Envelope Whole House. Air Leakage Control Installer Certification (RBE_WHALCI) among others. We have everything you will need right here at our location. Give us a call to find out more.