sealed soffits near fan exhaust

sealing some soffits to fix ice damming

Views: 769

Comment

You need to be a member of Home Energy Pros to add comments!

Join Home Energy Pros

Comment by Adin Maynard on July 30, 2011 at 4:47am
Bryce, thanks for the comment. Yes the flat was fully airsealed and brought up to R-60 with cellulose.  Each standard chute vent was improved, as can be seen in far left bay in image above. The few soffits near the bath fan were sealed to prevent exhaust air from bring brought back into the attic.  THere was plenty of 'low/high' ventilation, so this approach was taken. 
This past winter was crazy for ice damming. As a result, for attic retrofits, we are careful to improve and maintain soffit vents whenever possible.
Comment by Bryce Cramer on July 29, 2011 at 10:52am
Not sure if I understand how sealing the flow of air through the soffit will reduce ice damns. The better approach would be to stop the heat loss through the attic floor with a better insulation job. Then provide proper ventilation so that the roof deck remains cold and does not therefore melt snow that refreezes over a cold soffit. If the bathroom vent is just vented into the soffit area, I would think this would cause additional issues. The warm air (moist) air will hang inside the soffit area since the soffit is now sealed from the rest of the atiic....this should lead to moisture, mold and other problems in the roof deck above this soffit area.

Videos

  • Add Videos
  • View All

Twitter

Latest Activity

Amber Vignieri commented on Amber Vignieri's blog post Elevate Energy Mythbusters: Windows & Attics Edition
"Thanks Jackie! Glad you found it useful. We're always trying to make home energy performance…"
44 minutes ago
Dale@EnergyWright commented on Paul Scheckel's blog post Gas vs Induction Cooking Energy Comparison
"The Induction website has a wealth of information, both pro and con, about induction…"
50 minutes ago
jackie harsha commented on Amber Vignieri's blog post Elevate Energy Mythbusters: Windows & Attics Edition
"Enjoyed your post. "
18 hours ago
Tom White's video was featured

CalCERTS How To: Duct Leakage to Outside Test

Training Video to show how to perform a Duct Leakage to Outside Test
18 hours ago
jackie harsha shared their blog post on Facebook
18 hours ago
Yaniv Yonatan Abitan is now a member of Home Energy Pros
20 hours ago
Nickie Irvine commented on Paul Scheckel's blog post Gas vs Induction Cooking Energy Comparison
"Comment to Tauren on costs of natural gas vs electric induction.  Because of the extremely…"
20 hours ago
tedkidd liked Paul Scheckel's blog post Gas vs Induction Cooking Energy Comparison
20 hours ago

© 2016   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service