THAT leak

[Pocster]

1 hour ago, Onoff said:

The blocks will absolutely have a damming effect in holding water back and raising the level of the water where it's held. It may also allow water to divert somewhere it didn't go before. Plus making you go "Damn!" when it leaks.

I still don’t get it . It’s pissed down for weeks everything was swimming in water zero leak from this front part . (expletive deleted)s me off 

[Spinny]

If highest side, could it be ponding on the roof covering, then if membrane piece on top and up the upstand, capillary action between the two pieces of membrane ?

 

Have you got a drainage gap between the decking and the rooflight edge ?

 

I guess if people walk on the glass it might be the seal between the glass units and the frame ?

Edited October 4 by Spinny

[Pocster]

42 minutes ago, Spinny said:

Have you got a drainage gap between the decking and the rooflight edge ?

Yes . I was wondering that . When it pisses down decking will direct water right at the glazing . Then pour down just before it 

[Pocster]

Dug out the end . Got my nice concrete / bitumen slab . 
ground to right of quoin seems dry even as I dig down . Ground in front of quoin damp - so suggests waters still getting in . Going to tidy this up then concrete in the lot 

[Pocster]

Dug right out under that corner 

[Pocster]

Done . Be interesting to see what happens . I’ve deliberately took the kerb edging out so water can run off but also so I could get right under that corner 

[Big Jimbo]

Fingers crossed, (again)

[Pocster]

3 hours ago, Big Jimbo said:

Fingers crossed, (again)

Everything crossed again 👍

[Andehh]

Still following with interest! Good luck... These things can be a bastard for sure. 

[Pocster]

11 hours ago, Andehh said:

Still following with interest! Good luck... These things can be a bastard for sure. 

You stupid enough to build an underground house also ? 😊

[Pocster]

It’s at this point I usually say “ leak now you bast ! “ - but I’ve learnt my lesson …

[Pocster]

Nothing to really report .

Had substantial rain this morning- no leak from the main ‘over the slab ‘ bit .

Those small walk on glazing units - no leak , but getting my finger right up in the gap between upstand and glazing can feel its damp . So foamed one window around that ‘weak spot ‘ .

[Mr Punter]

17 minutes ago, Pocster said:

So foamed one window around that ‘weak spot ‘ .

 

Are you using closed cell foam?  Some expanding foams seem to act like a sponge.

[Pocster]

17 minutes ago, Mr Punter said:

 

Are you using closed cell foam?  Some expanding foams seem to act like a sponge.

How can I tell ?

nothing obvious on canister 

 

checking and of course most suppliers don’t state ‘open’ or ‘closed ‘ cell - that would be too easy .  It would seem it’s almost impossible to purchase with certainty of ‘ closed cell ‘ because most just say water resistant ….

Edited yesterday at 11:40 by Pocster

[Mr Punter]

Just now, Pocster said:

How can I tell ?

nothing obvious on canister 

 

Yes, closed v open cell seems to mean waterproof / not waterproof but there is no easy way of telling, unless they say so.

[Big Jimbo]

Would you not be better with a nice thick bead of silicone ?

[Nickfromwales]

13 minutes ago, Pocster said:

How can I tell ?

nothing obvious on canister 

 

checking and of course most suppliers don’t state ‘open’ or ‘closed ‘ cell - that would be too easy .  It would seem it’s almost impossible to purchase with certainty of ‘ closed cell ‘ because most just say water resistant ….

Illbruck FM330 mate. Use that, and scoop the other stuff out. 

[Pocster]

Just now, Mr Punter said:

 

Yes, closed v open cell seems to mean waterproof / not waterproof but there is no easy way of telling, unless they say so.

Bit of a mess really ! I.e simple enough requirement yet impossible to tell !

I even looked at the spec sheet for what I used on the Soundal website and it’s basically unhelpful .

[Pocster]

2 minutes ago, Big Jimbo said:

Would you not be better with a nice thick bead of silicone ?

Can’t get in there - too tight and awkward a gap . If I took the glass out I could from above .

[Pocster]

2 minutes ago, Nickfromwales said:

Illbruck FM330 mate. Use that, and scoop the other stuff out. 

But the description of that is pretty much like everything else “ air gap sealer “ …. 😕

[Nickfromwales]

2 minutes ago, Pocster said:

But the description of that is pretty much like everything else “ air gap sealer “ …. 😕

Don’t make me come down there and squirt you with it. 
 

Just do as the Welsh fella says, and use that one.

 

Now “go” 👉

[Pocster]

https://www.bostik.com/assets/bostik/TDS_SX Professionals Gun Grade Expanding PU Foam_en_GB.pdf
 

actually states closed cell 70%

[Nickfromwales]

I believe I have spoken……

[Pocster]

1 minute ago, Nickfromwales said:

Don’t make me come down there and squirt you with it. 
 

Just do as the Welsh fella says, and use that one.

 

Now “go” 👉

But that’s the entire point Uncle Nick . 99% of the (expletive deleted)ing expanding foam spec doesn’t say shit about water resistance. @Mr Punter fault for mentioning it ! 😝 .

But that’s bostik one does say closed cell .

[Pocster]

Just now, Nickfromwales said:

I believe I have spoken……

Back it up Welsh Wizard with facts …. 🤨