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: 342

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

Eric Kjelshus commented on Michael Dunseith's photo
Thumbnail

Clearance to combustibles ?

"This show's back drafting of hot water heater.    Seal the return 1st  keep the…"
1 hour ago
Eric Kjelshus commented on John Nicholas's blog post Indoor Air - How do you measure if it is Healthy?
"airadviceforhomes.com   has a quick snap shot test or leave it there for week.   Good…"
1 hour ago
Michael Dunseith liked Kevin Jordan's photo
2 hours ago
Michael D'Arcy replied to Michael D'Arcy's discussion Small video we created to promote Home Performance
"Thanks Tom. Ill make that happen next time."
12 hours ago
Colin Genge posted events
12 hours ago
Anna commented on Mary Desilva's blog post Finding Professional Water Damage Restoration Services
"Mary Desilva thanks for sharing such a great article. I always think why we  should hire…"
16 hours ago
Profile IconNathan St.Germain, Lisa Sweet and Kevin joined Home Energy Pros
17 hours ago
Michael Dunseith's photo was featured
yesterday

© 2016   Created by Lawrence Berkeley National Laboratory.   Powered by

Badges  |  Report an Issue  |  Terms of Service