Wall assembly / Green Building & Sustainable Home Renovation Information & Advice

...wall with fiberglass batts, the dew point - the temperature at which air can no longer hold moisture - often occurs inside the stud cavity or on the interior face of the exterior sheathing. This leads to condensation, mold, and rot. The math of outsulation To ensure the existing wall cavity remains permanently dry, you...

...wall assembly must manage moisture. The permeability of your materials must be carefully considered. The image below is the 'two thirds rule' wall assembly of the LEED platinum Edelweiss House built by Ecohome in Quebec, Canada, where winters are harsh and cold but summers are hot and humid. Here we built a stud wall w...

...walls Moisture is the number one enemy of building durability, it leads to mold, rot, and structural failure of walls. In any wall assembly, moisture can enter in three primary ways: bulk water intrusion (rain), vapor diffusion (moisture passing through walls), and air leakage. Understanding the distinction between the...

...wall or roof assembly is the true measure. Since GPS is often used for continuous exterior insulation (CI), it is exceptional at preventing thermal bridging through structural elements like studs, rims, and foundation walls. This is a crucial strategy for achieving aggressive energy targets like those found in Passive ...

...walls and roof.  Larsen trusses are not structural or load bearing, ; their intention is simply to facilitate a thicker wall assembly for added insulation, and to place the vapor barrier at the 2/3rds point in the wall assembly creating all the advantages of a double-stud wall assembly without many of the problems, lik...