It’s external - so not a real issue , just awkward . Think of 2 pieces of timber screwed together . You would get that slight gap between the timbers - it’s that bit I need to fill . Did paint them with waterproof liquid rubber but as awkward couldn’t get the brush in there ( can’t actually see into that gap so painted blind ) .

So I guess I need maybe a spray type waterproofing solution ( spray and hope ! ) .

See them online - just wondered if anyone recommends a specific one / brand . None of this will be visible when done so messiness not an issue !

More info required on where and how and what’s leaking (rain?)

34 minutes ago, joe90 said:

More info required on where and how and what’s leaking (rain?)

Sorry yeah ! It’s just rain getting in that gap .

Grabbed a random photo of internet . So this type of ‘gap’ - just want to piss / spray something along that bit where the timbers meet .

Expanding PU wood glue that’s works on damp substrate. This is my “go to” glue for thst kind of work. Might be a problem tho if you have already covered it in other stuff.

 

 

 

2 minutes ago, joe90 said:

Expanding PU wood glue that’s works on damp substrate. This is my “go to” glue for thst kind of work. Might be a problem tho if you have already covered it in other stuff.

 

 

 

Yeah , also access is tricky - can’t actually get low enough too see what I’m doing ; hence was thinking maybe a spray like for example 

32 minutes ago, Pocster said:

It’s just rain getting in that gap .

Can you not protect the area (pic?)

Just now, joe90 said:

Can you not protect the area (pic?)

Well maybe - just thought a nice spray would be easier for my laziness .

Think of a ( wait for it ) walk on glazing upstand . Not THAT one - these are Lightwells external to the build .

If waters getting to the other side of untreated wood, then don’t you need to solve the issue further upstream?

 

 

Just saying…..  

I’ve got a cheap endoscope from Amazon which is useful for looking in difficult to access places. 
 

 

9 minutes ago, Jilly said:

I’ve got a cheap endoscope from Amazon which is useful for looking in difficult to access places. 
 

 

Like your bottom ?

56 minutes ago, Jilly said:

I’ve got a cheap endoscope from Amazon which is useful for looking in difficult to access places. 

 

 

I suspect @Pocster has a selection of these kept in his 'special' cupboard.

1 hour ago, Pocster said:

Like your bottom ?

Anywhere other than YOUR bottom for sure.

Another quality thread taken under….  

I was looking for the old Seek 'n Seal we'd use around our windscreens as kids with leaky old Fords. Came across this and liked the name:

 

https://www.amazon.co.uk/Captain-Tolleys-Creeping-Crack-sealer/dp/B003T6EJ9A/ref=mp_s_a_1_3?

10 minutes ago, Onoff said:

I was looking for the old Seek 'n Seal we'd use around our windscreens as kids with leaky old Fords. Came across this and liked the name:

 

https://www.amazon.co.uk/Captain-Tolleys-Creeping-Crack-sealer/dp/B003T6EJ9A/ref=mp_s_a_1_3?

I love a penetrating sealant for sure !

With a name like that @Pocster is bound to like it 🤣