THAT leak

[Pocster]

So after 2 yrs I decided to dig up the lane .

The leak if you remember is running over the slab and in .

Expecting to find great holes I found nothing .

The only thing of note is the ground is really crap ( almost soil ) in this trench and I’m hoping that’s simply the issue .

I can’t go much deeper as I can’t go too wide as the lane is needed for access .

Just dig a bit more and pour concrete in ??

 

 

[Pocster]

[Pocster]

I know no one knows ; including me !

So here’s the leak on the inside . Coming in on the red line . So over the slab , not the upstand . Assuming wall in lane is sat on the slab . Green line shows depth of slab - 14cm .

I guess I’m not going to find how it’s getting in but I am tempted to fill the trench with concrete with the plan being the rain then runs away from the build rather than straight through the ground and in .

[Pocster]

I know !

Almost impossible to give advice on .

So went a bit deeper . Hitting hardcore now - presumably the lane .

Going to mix cement and fill it in

 

 

[crispy_wafer]

So ingress between the slab and upstand.  Any way to expose outside the junction of the slab and where the upstand has been poured onto it, and then tank the bejesus all round it?

[Pocster]

  On 01/04/2025 at 13:08, crispy_wafer said:

So ingress between the slab and upstand.  Any way to expose outside the junction of the slab and where the upstand has been poured onto it, and then tank the bejesus all round it?

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No . Upstand doesn’t leak . 
upstand is timber . Roof above is not leaking - tested this . Hard too see in the photo but the slab has a slight crack it after pouring . So water is tracking in via that route .

When very rarely have masses of rain even seen it push across the ceiling to the other glazing skylight and come through in the same place I.e on slab under upstand 

 

water is tracking in from that lane 100% certain - because a few years ago I put a hose on that wall and it rained inside .

Filled it in now - just wait for rain !!

[Pocster]

@crispy_wafer

Works finished for the day as its 3pm

So this is the glass unit above ground . Coloured line is leak side . The trench I’ve dug is otherside of the wall . That crap ground was coincidentally directly parallel to the window . Fingers crossed I guess !!

[crispy_wafer]

Crikey, thats a chasing tail job, hope you’ve got it?  How likely is that cement going to survive a winter or two?  I wonder if tar or something would be better.  The cement will hopefully give you a short term answer to if thats the issue

Edited Tuesday at 17:01 by crispy_wafer

[Eric]

Where does the ASHP drain go to 👀

[Pocster]

  On 01/04/2025 at 18:09, Eric said:

Where does the ASHP drain go to 👀

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Just onto the roof .

[Pocster]

  On 01/04/2025 at 17:01, crispy_wafer said:

Crikey, thats a chasing tail job, hope you’ve got it?  How likely is that cement going to survive a winter or two?  I wonder if tar or something would be better.  The cement will hopefully give you a short term answer to if thats the issue

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Yeah I know . I’ve got a bag of cold tarmac I can stick ontop . If this works and it doesn’t leak what should I fill it with ? . I did put fibres in with the sand / cement mix to reduce chance of cracking ….

Edited Tuesday at 18:25 by Pocster

[Pocster]

What about tarmacing that entire section of the lane ?

Just trying to come up with plan b , c , d …… 

[SteamyTea]

I had a leak about 20 minutes ago.

If I drive up to yours, I will be ready to do another one.

More that willing to test all your handy work with my aqua vita.

[scottishjohn]

why not tank the inside?

[Pocster]

  On 02/04/2025 at 18:17, scottishjohn said:

why not tank the inside?

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Because water is still running over the slab and just pop out somewhere else is what worries me .