Good Drainage Planes stop Capillary Action

We use drainage gaps or planes in wall systems to stop water from entering the building shell and causing deterioration or mould. This air gap does two things if wide enough; it prevents water’s surface tension from staying or even climbing up the wall and the gap also disperses the forces of wind driven rain or solar vapour drive. Let’s look at two common issues that may cause problems in the near future.

When dimpled membranes were first introduced on the market, manufacturers were quite explicit about the need to fasten the top edge of the membrane with a terminal strip. They still are!

The goal of a dimpled membrane is to create and air pocket between the concrete foundation wall and the membrane itself with the aim of allowing any water that get’s past the membrane to quickly fall down the air pocket to the footing drain. The beauty of the system is that it stops the forces of capillary action that might normally hold the water against the wall. In order to stop the forces of capillary action, you need an open clear gap though.

The strip plays an important role in preventing debris from falling into and filling that precious air gap. Its uncommon to see terminus strips installed on most job sites, but this is an easy fix; follow the manufacturer’s instructions!

Read more here:

BGG Good Drainage Planes stop Capillary Action

Views: 346

Comment

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

Join Home Energy Pros

Videos

  • Add Videos
  • View All

Twitter

Latest Activity

Home Energy Magazine's blog post was featured
9 hours ago
Hannah Finch posted a blog post
10 hours ago
Profile Iconpank and Carrie Sturrock joined Home Energy Pros
10 hours ago
tedkidd commented on Amber Vignieri's blog post Chicago Winter No Match for Retrofitted Logan Square Building
"This case study is an example of how hard it is simply to do a compelling case study. Everyone has…"
12 hours ago
B. M. Lubin posted an event
Thumbnail

GPRO Construction Management Class at USGBC-LI headquarters in Hauppauge, NY at USGBC-LI Headquarters

September 19, 2016 at 9am to September 20, 2016 at 2pm
Taught by industry experts using real-life classroom exercises, GPRO CM gives experienced building…See More
16 hours ago
B. M. Lubin is now a member of Home Energy Pros
yesterday
Eric Kjelshus replied to tedkidd's discussion Dear DOE, PACE sucks - please fix or make it go away...
"Most HVAC system upgrade - change outs and attic seals-R-49 end up $20-30K   Most house -…"
yesterday
Brennan Less replied to Rob Madden, Solar Home Broker's discussion Indoor Air Quality Monitors and Meters
"Anyone interested in this realm should check out the EPA-funded project at the South Coast Air…"
yesterday

© 2016   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service