1 / 11

MoisTURe management

MoisTURe management. Code Minimums for Exterior Foam. Zone 6 2x4 walls: R-7.5 1.25” polyiso @ R-6/in 1.875” mineral wool @ R-4/in 2x6 walls: R-11.25 1.875” polyiso @ R-6/in 2.812” mineral wool @ R-4/in. GWP. Source: Avoiding the Global Warming Impact of Insulation

sakura
Download Presentation

MoisTURe management

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. MoisTURe management

  2. Code Minimums for Exterior Foam Zone 6 • 2x4 walls: R-7.5 • 1.25” polyiso @ R-6/in • 1.875” mineral wool @ R-4/in • 2x6 walls: R-11.25 • 1.875” polyiso @ R-6/in • 2.812” mineral wool @ R-4/in

  3. GWP

  4. Source: Avoiding the Global Warming Impact of Insulation Posted June 01, 2010 03:20 PM by Alex Wilson, buildinggreen.com

  5. Interior Management Strategies • Dehumidifiers • Bath fans • Range hoods • Sump pits • HRVs/ERVs • Target: < 45%

  6. Exterior Management Strategies • Overhangs • Gutters • Rainscreens • Thick foam and NO POLY • Plywood

  7. When walls go bad.

  8. Follow These Guidelines: • Air leaks are bad. • Air-permeable insulation is risky. • The thicker the wall, the colder the sheathing, and the riskier your wall. • Rainscreens are good GREAT. • Avoid OSB if possible where it’ll get wet. • Exterior foam? Make it thick. • Reverse laps are bad. Source: How Risky Is Cold OSB Wall Sheathing? Posted on Nov 5 2010 by Martin Holladay, GBA Advisor

More Related