by John Krigger | Jan 21, 2022
(1.5 CEUs) This course is about retrofitting doors, which requires quite a bit of good judgement along with carpentry skills. You’ll learn about the most common problems with doors and how to fix them. We discuss the types of door weatherstrip and how to weatherstrip...
by John Krigger | Jan 21, 2022
(1.5 CEUs) This lesson explains how to do major duct repair and duct air sealing. For example, sometimes the furnace and the main duct aren’t well connected, causing the worst air leak in the home. This course explores how to fix this furnace-duct problem and...
by John Krigger | Jan 14, 2022
(9.0 CEUs) The purpose of this course is to help you understand the characteristics, performance factors, and installation procedures of windows and doors. Windows and doors are a critical elements of the energy efficiency of the building envelope. Windows present us...