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: 353

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

Profile IconBrad Cook, Juan M San Miguel, Marla Meyer and 2 more joined Home Energy Pros
17 hours ago
Chris Clay posted photos
23 hours ago
Chris Clay replied to Blake Shurtz's discussion Testing spillage on induced draft furnace?
"Monitor the pressure in the vent, if its positive in the vent for more than a minute it is most…"
23 hours ago
Chris Clay replied to Blake Shurtz's discussion Testing spillage in mechanical closet?
"You can stand outside and read pressures. Be sure to have extra hose as you need CAZ wrt outside…"
23 hours ago
Chris Clay liked Blake Shurtz's discussion Testing spillage in mechanical closet?
23 hours ago
Diane Jackson posted photos
23 hours ago
Amber Vignieri posted a blog post
yesterday
Evan Mills commented on Tom White's video
Thumbnail

The Impact of Green Buildings on Cognitive Function

"Good to see work like this going on.  Findings seem qualitatively consistent with what…"
yesterday

© 2016   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service