Exterior insulation / Green Building & Sustainable Home Renovation Information & Advice

...exterior insulation must be high enough to keep the interior sheathing above the condensing temperature. For example, if you have R-12 batts in a 2x4 wall, you should ideally add at least R-10 to R-15 of exterior insulation. This shifts the 0°C (32°F) line entirely into the new rigid insulation layer, protecting the wo...

...exterior rigid insulation. We chose mineral wool rigid board insulation as it allows moisture to pass through easily. Exterior board insulation provides a seamless layer of insulation and is a great way to achieve the 2/3rds rule of insulation for wall assemblies. Image © Ecohome   How the rule prevents condensation...

...insulation board is ultimately determined by the specific application in the home’s thermal envelope. Exterior continuous insulation for walls This is the most common use for rigid board insulation. Placing a continuous layer of insulation over the exterior sheathing is the single most effective way to eliminate therma...

...Insulation (EWI) and cavity fills. Australia & New Zealand: G-EPS. Used widely in lightweight wall systems and exterior cladding insulation.   Performance metrics: r-value and r-per-inch The thermal performance of GPS makes it an effective and space-saving choice for continuous insulation. For homeowners and d...

...exteriors: a homeowner's and pro's guide In the world of modern building, you've likely seen homes and commercial buildings with a distinctive, smooth stucco-like finish. This is often an Exterior Insulation and Finish System (EIFS), or an EIFS exterior. EIFS is a multi-layered wall assembly that offers superior therma...

...insulation at all, and instead just invest in super-efficient heating systems, like geothermal ground source heat pumps, or air source heat pumps. First, we will explore the options of interior and exterior insulation and you will quickly see why skipping insulation altogether, as insane as it sounds at first, may make...

...insulation is too much in an attic? What does ‘diminishing returns’ for insulation mean?  It's as simple as this - adding one inch of insulation to a wall that has only one inch of insulation is certainly well worth the investment, in any climate. Adding one inch of insulation to a wall that has 5 inches of insulation...

...exterior insulation: It would have been quicker for us to attach the entire mass of exterior insulation with longer screws and only one course of strapping, but using THERM software, our engineer determined that the cold transmitted through the metal screws would have reduced the effective R-value of the exterior insul...