Johnson Group Contracting
December 14, 2018, 01:34:19 PM *
Welcome, Guest. Please login or register.

Login with username, password and session length

We are getting 15,000 hack attempts per month, we have turned off registration of new members until new code is available to better protect our sites...

Welcome to the Forums produced by Johnson Group Contracting...     
 Please post your projects or thoughts.

You will need to be registered in, to view and post on this site properly.

ATTACHMENTS: Image attachments will be displayed under your posts if you include them (we like pictures, but please size them before posting!).
You must log in with a user name to post attachments.

(Cookies need to be enabled for this site so you can navigate properly.)
Privacy: We have no interest in your personal information, any information that is recorded is for the function of the Forums only and will not be shared with anyone.

To visit the Contracting Website - Click Banner a top of page-

Our Corporate Website can be found at
   Home   Help Search Login Register  
Pages: [1]   Go Down
Author Topic: leaky basement.  (Read 3878 times)
« on: March 06, 2007, 08:51:29 AM »

We have an older home in Etobicoke. With the "freeze thaw" we noticed the basement floor was wet (10 towels). there are no apparent cracks in the block foundation. Our son hired a contractor to evaluate the situation. He was told that there was a falilure on the outside and that there would have to be excavating and resurfacing with tar and membrane to the ouside of the foundation.  New weepers would have to be put in  and conncected to the existing functional drains---- big bucks. I might add that trying do work from the inside would be very difficult.
Are there any better solutions? We're really in a frazzle.
mike :? 
Rod Johnson
« Reply #1 on: March 06, 2007, 10:38:48 AM »

Well first off, don't let anyone use tar. It will not bridge any cracks and only lasts a few short years on flat surfaces. When ever our crew digs up a residential foundation, they rarely see any tar left on a wall. We recommend the Blueseal Waterproofing or BlueSkin WP200, but there are many other types of "waterproofing" membrane that can be utilized. The repair shouldn't be just an airgap membrane like Delta-MS or System Platon (classified as Dampproofing only). Those can be added after the waterproofing but that would be overkill.

I f the bare wall has been thoughly examined and there is no breakage in it, then what kind of flaw is the "contractor " talking about? I have hear of far too many stories of contractors who make things up because they just can't bring themselves to say they don't know why it is leaking.

If the is no flaw, then the problem is likely a drainage system failure. You will require either an exterior drainage system repair along that wall or you can put in an Interior Drainage System. Both use weeping tile and need to drain into something. As a possible alternative, you can install a sump system at the location and make sure the plastic liner is full of holes (25 - 50) to let water in.

Hope that helps.

Pages: [1]   Go Up
Jump to:  

We sell injection grouting products in our online shop!
See it at

Powered by MySQL Powered by PHP Copyright Johnson Group Online Inc. 2009
Powered by SMF 1.1.21 | SMF © 2015, Simple Machines
Valid XHTML 1.0! Valid CSS!