THAT leak

[Nickfromwales]

Near impossible to see what you're seeing there fella   

[Pocster]

1 hour ago, Nickfromwales said:

Near impossible to see what you're seeing there fella   

I got ninja eyes .

[Pocster]

No rain Saturday typically .

So hosed the bollocks out that corner !

Made 1 drip inside .

Took up the decking . Perhaps the water is hitting the steel work and bouncing upwards ?

Other side of that white render board is wet ….

At least I’m in the right area now !

[Pocster]

Endoscope no good here . Looks like water is bouncing upwards over that roofing lip . 
what do I do ? . Just foam fill ? Deflector of some sort ??

[Onoff]

5 minutes ago, Pocster said:

Endoscope no good here . Looks like water is bouncing upwards over that roofing lip . 
what do I do ? . Just foam fill ? Deflector of some sort ??

 

A raindrop bounces up a nominal 6" when it hits the ground. It's why house DPC is traditionally at 6" off the deck. 

 

Maybe clean the area and run overlapping, horizontal, beads of clear CT1, starting at the bottom.

[Pocster]

Got a torch in there . I think I can see some of the asphalt is lifted in the corner . 
Just foam all along there ? - best option really I guess !

Some kind of deflector on that edge corner ??

[Pocster]

Notice this asphalt joint ‘bows’ slightly if I push it . Perhaps that joint isn’t water tight ?

just smear ebt on it ?

Edited Sunday at 10:20 by Pocster

[Pocster]

19 minutes ago, Onoff said:

Maybe clean the area and run overlapping, horizontal, beads of clear CT1, starting at the bottom.

No understandy ! Idiot diagram please 😊

[Pocster]

Visually checked that silicone joint . It’s possible I think with a hose pipe on it - that water could still get in  ( tiny gaps now filled ) .So I really need to flash / cover that entire corner some how I.e so the silicone is secondary to leak protection . Render boards nice and flat to fix to . Could just do an L piece off that and then silicone again against the stone ??? .

Any better suggestions ?

[Pocster]

Maybe something like this .

Backfill the stone gap side with ebt so it’s flush with the trim . Even overlap another trim the opposite way around to cover the ebt side .

Have to do something at the top so as not to make a nice tube for water to flow down .

Again ; any other suggestions welcome !

Edited Sunday at 11:58 by Pocster

[ToughButterCup]

On 25/04/2025 at 10:42, Pocster said:

...

Looks interesting at the bottom , can see plastic membrane and a hole ( ??? )

 

Yes. I had a close look with a graphics package.

The hole - and more importantly its position -  might be: might be  suspicious. Where's the path in relation to that 'feature' ?

If it's not a hole, but a sheet of plastic (DPM ?) , is the DPM the vector for the water from a leak source elsewhere ?

 

Leaks are worse than having a truculent tenager in the house. Much worse.

[Pocster]

16 minutes ago, ToughButterCup said:

 

Yes. I had a close look with a graphics package.

The hole - and more importantly its position -  might be: might be  suspicious. Where's the path in relation to that 'feature' ?

If it's not a hole, but a sheet of plastic (DPM ?) , is the DPM the vector for the water from a leak source elsewhere ?

 

Leaks are worse than having a truculent tenager in the house. Much worse.

I can see blue plastic sheet , that  hole’  could be plastic black membrane.

Where the wall ends is exactly where the house begins . This is the issue 100% . So going to hose again today ( even though I went over the silicone again yesterday ) . Even if no leak still need to make the corner far more robust 

[Pocster]

Hosed it down twice now . Cant make it leak - but can cause a small damp spot in one of the window upstands . So water is still getting in there . Tomorrow once dry ; I’m going to ebt all over it again but shape it better ( and messier ) to the stone shape ( currently can see tiny gaps between a few places of silicone and stone ) .

Then to hide the mess might just stick the down pipe in the corner 😊 . Will redirect the down pipe further away from that corner for peace of mind aswell .

Edited Monday at 10:49 by Pocster

[Pocster]

4 minutes ago, Pocster said:

Hosed it down twice now . Cant make it leak - but can cause a small damp spot in one of the window upstands . So water is still getting in there . Tomorrow once dry ; I’m going to ebt all over it again but shape it better ( and messier ) to the stone shape ( currently can see tiny gaps between a few places of silicone and stone ) .

Then to hide the mess might just stick the down pipe in the corner 😊 . Will redirect the down pipe further away from that corner for peace of mind aswell .

Spoke too soon . The tiniest 1 droplet of water just dripped . I’m pissing it in the corner ( you could argue it’s overkill ) - but I want to be 100% confident .

Minuscule gaps like this are my suspects 

[Pocster]

lol !

inadvertently noticed a gap in the grout round a stone ! . Possibly nothing …. but you know - will cement that ; and check closely for others today !

[Pocster]

Cemented the tinniest of gaps in the stone work . Ebt the tinniest of holes .

Ordered a rain deflector for the bottom - for peace of mind .

Will test tomorrow!

[dpmiller]

you've sorted the loose seam in the asphalt yes?

[Pocster]

4 hours ago, dpmiller said:

you've sorted the loose seam in the asphalt yes?

Not yet . What’s best just smear ebt over the joint ? . Just water tested it now - still leaks .

[Pocster]

Tried to get endoscope photos of that seam.

Nothing conclusive .

Did notice this seam near by that has lifted a bit ( didn’t want to tug it too much ) .

Will let it all dry out then will gently hose just the bottom bit of render I.e to check the roofing seams  

[Pocster]

If that is the issue - do I need this sort of thing ???

[Pocster]

Leak is slightly damp to touch .

So this time I hosed just the bottom of the render - completely sending water over all the roof seams in that corner . That was 30 mins ago . Zero difference inside . I’ll repeat this again in a few hours ; hot day so will dry out better . So looks like it’s still getting in somewhere on that render to stone joint .

[Onoff]

Why not use a rubberised roofing paint in a neat, black horizontal band along the bottom? It'll get into all the nooks and crannies of suspect seams.

[Pocster]

2 hours ago, Onoff said:

Why not use a rubberised roofing paint in a neat, black horizontal band along the bottom? It'll get into all the nooks and crannies of suspect seams.

Could do . My test on the seams was inconclusive. Going to tip watering cans of water just over the roof / seams tomorrow.

You mean paint the seams with this rubberised paint yes ?

[Onoff]

2 minutes ago, Pocster said:

You mean paint the seams with this rubberised paint yes ?

 

I meant to paint the vertical 6" or whatever strip under the render. It can't look any worse that EBT'ing each seam under there. 

[Pocster]

Just now, Onoff said:

 

I meant to paint the vertical 6" or whatever strip under the render. It can't look any worse that EBT'ing each seam under there. 

??? Idiot diagram please