How to stop water ingress under house through external brick wall?

[approachmhn]

 The external wall is single brick, I am getting water coming through the brickwork to crawl space under house when it rains .

I can get to both positive and negative sides of the water transfer.

Is there a suitable product to seal the wall on the outside or inside.

the upper part of external wall is rendered. So I think water ingress is through bottom where wall is not rendered and is covered by soil.

appreciate your suggestions

thanks.

 

 

[approachmhn]

Thank you @Dave-1 and @EricL 

Now  you guys gave me more options.

I will start with @EricL suggestion.

@Dave-1 Then  I need your 3rd option to connect to storm water pipe through pit.

Will update as I progress. Thanks again.

[approachmhn]

Merry Christmas to everyone from the Bunnings family.

@Dave-1 @EricL @MitchellMc  I observed the brick wall has cracks at few places  like the one seen in attached pic.

Is it ok if i waterproof  direct on top of brick ? Or should i patch this and then waterproof?

Also, what cement or patching I should use if I need to?

Thank you.

 

[Dave-1]

Good Afternoon @approachmhn 

The bitumen paint will coat everything and seal any cracks. Your picture shows clay below those bricks? Is there a base the bricks sit on? And can we have a long shot (photo) showing the bricks and trench. I am just wondering if you have dug below the bricks and what they sit on.

Happy Christmas as well

Dave

[approachmhn]

 

Good Evening @Dave-1 .

Thank you. I have got

Concremate at home. So, will fill large cracks with it. Leave half day to dry and then apply bitumen paint. I think that will be ok.

i came home late. So could not take photo. Will post tomorrow morning.

Please check  brick wall photos from negative side. As it is a slope, the slab is like steps. The photo where you see water is on the lower side.

Outer wall where I dug the trench , bricks are actually on a concrete slab. But I see it is not extended away from brick. I mean the clay you see below those bricks is actually  slab made of concrete + gravel. I will post photos tomorrow morning.

it rained a lot last 2 days. I don’t see any water under house. Though there was enough water standing in trench.

Looks like water leak was through bricks.

Sometimes I think, after painting with bitumen, put gravel below bricks and then backfill dirt. 
That might solve the problem instead of Ag pipe. 
Correct me if I am wrong.

 

[Dave-1]

Evening @approachmhn 

Cool, was worried the bricks looked like they were in the clay directly

I really wouldnt worry about the concretemate, id go with the bitumen paint to seal the cracks. But really comes down to how comfortable you are.

Yes you could go that route with backfilling the trench after the bitumen paint has dried. Just remember that the issue arrose because you had excess water there. Water needs somewhere to go and came form somewhere. You could always backfill the trench with soil and monitor it. It will be easier to dig out as you have now done the initial excavation. 

You know your place better then anyone else, and you are the one who has the final call I installed pavers over the 8mm gravel when the recomendation said use paving sand. I am happy with the results but also know that issues could arrise. The first one is weeds do like the cracks  

Write your options out, effort you have gone to, effort that you may expell backfilling the trench. Money saved by not purchasing the pipe and pits, Effort to dig the lot up if the problem returns. Pretty much your call I like those decisions even tho they do stress me Only one way to learn is usually what I tell myself.

Dave