This self study program is specifically designed to help a person to prepare for the BPI Envelope Professional Written and Field Examinations. If you are interested in working as a shell technician or installer for helping weatherize homes, use our materials to get the training to help prepare you for working as a shell technician and to prepare for the Envelope Professional Field Exams. Learn how a house and its ducts are tested for leakiness. Learn about energy in the home and where to look for reducing air infiltration and increasing insulation to reduce energy bills. For those without a construction background, we also include a 10-DVD Residential Basic Training Package to help you understand how the systems in the home work.

A series of DVDs and books is included with this self-paced home study program (Not an online program)