Most moisture problems can be diagnosed by looking at the condition and asking how much water it took to create that problem. Solving the problem amounts to asking where that amount of water could have come from and where it should go.
In 1999, renowned Canadian consultants Donald Hazleden and Paul Morris presented a seminal paper, “Designing for durable wood construction: the 4Ds”, that summarized the 4 D’s (deflection, drainage, drying, and durable – aka, decay-resistant – materials) of successful wall design.
Senior Principal Lonnie Haughton presents this introduction of fundamental ‘real-world’ aspects of the properties of water.
In January 2015, a major fire destroyed roofing and attic spaces (Photo 1) and top floor apartments (Photo 2) at an historic three-story, wood-framed, mixed-used building