Advice re: rain forcing through a concrete wall

[santaman2000]

In photo three it looks like the corrugated sheets are just butting on top of the concrete wall and not overlapping it (and this is how you seem to describe it), is this correct?. If this is so the wind will easily drive rain water back inside the shed and down the wall. You need to either create an overlap between sheets and wall, or seal the gap between sheets and wall. Personally I would create a ''good'' overlap as it's more permanent (either with short similar sheets or even roofing felt). Don’t underestimate wind driven rain.....

Plus 1 to this. Are you renting the shed? If so, I'd contact the landlord to solve the problem.

 

[demographic]

Here are a few photos that hopefully illustrate what I mean.

Riiiiiiiight, when we put Tyvek wrap vapour barrier onto timber frame kits the minimum overlap is 150mm.

Looks to me that another course of blockwork is needed.

 

[Alreetmiowdmuka]

In photo three it looks like the corrugated sheets are just butting on top of the concrete wall and not overlapping it (and this is how you seem to describe it), is this correct?. If this is so the wind will easily drive rain water back inside the shed and down the wall. You need to either create an overlap between sheets and wall, or seal the gap between sheets and wall. Personally I would create a ''good'' overlap as it's more permanent (either with short similar sheets or even roofing felt). Don’t underestimate wind driven rain.

Also in photo four, there is a different coloured piece of sheeting (plastic one for light? or just another metal one?), is the leak inside shed beneath that piece of sheeting and if so are the overlaps on it the right way round to stop water running down the inside.

I'd say this is about right.it wants some 12 inch strips of the metal sheeting sliding up behind too create a bigger overlap.yer could slide up some plastic sheeting and expanding foam it in then seal it with some silicone.but that would only stop it temp.(bodge it n scarper)


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[demographic]

Even a 450mm roll of DPC and few tins of squirty foam would sort it.

 

[stonehippo]

I would agree that the junction between the wriggly tin and the top of the wall appears to be the problem. The corrugations will channel water down onto the wall at speed and the pressure is driving it through the wall. The water needs to be channelled away from the top of the wall. Also the masonry paint doesn't look particularly good. If that isn't a cavity wall then driving rain will penetrate the wall. A good prep job and a coat of masonry paint will help with that. It is possible that all this may not be enough however, as that shed doesn't look particularly well built.

 

[demographic]

Likely been a cowshed where ventilation is a primary concern.

 

[Badger74]

Likely been a cowshed where ventilation is a primary concern.

Correct, Its a cow shed from who knows when, long before the house I'm in was built.

Its up to me to sort the problem as I cant have ago at the landlord as its my dad, and my 'rent' is to paint the shed walls and cut the grass in spring.

Thanks for the consensus that backs up what I initially thought after a brief look when unloading the wagon.