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And another couple of things that may matter: - Roof covering is EDPM over the OSB boards - Building is only 18 months old!!

Did you get a reply to this? I have exactly the same problem (I think)! Did you manage to find a solution?

Sorry one more thing I forgot to mention ... I don't recall this exact issue last year but then I don't think we had such a long cold spell?

Hello I have just noticed some water on top of a shelf in our blockwork shed, on some Corex I'm storing and on a BBQ I store in there in winter. I think it's caused by condensation due to the cold weather but it's a long story .... We've had a number of issues with the shed, the floor was...

We had a shed built last year which is leaking at the base. The builder has agreed to raise the concrete floor and install a DPM lapping into existing DPC. We asked for another builder’s advice and he said that the DPM should have sand under it to stop it puncturing. However I thought I saw on...

Thanks. To be fair it might be me misunderstanding what they're saying! I did check with the "another builder" who said that he would have done 150mm hardcore, 150mm concrete with mesh reinforcement because the building is quite light

Asking for the future, no observable issues now but only 1 year old. As there's issues with the leaking through mortar at the bottom, and issues with the roof, if this is an issue I'd consider getting a surveyor to review before making payment on another job the guy is doing. It's a slab I'm...

Hello We had a blockwork outbuilding built last year (about 4m x 3.5m). I've previously asked for advice on water ingress but another thought has come to mind on the construction of the shed. I can't say for sure but I think it's built as follows (pics attached): - Hardcore (not sure how deep...

And with the promised photos (sorry!!)

And with the promised photos (sorry!)

Please see below. There seems to be a DPC at 2 and 4 courses - see internal photo. I’m sure that in at least 2 joints they’re at the vertical joints between 2nd course of bricks ie not caused by the slab. I’m not saying what you’re saying isn’t right just maybe more than one explanation. I was...

Yeah but this is a brick and block building built by a professional builder designed to last a lifetime, not something chucked together out of cheap wood with a crappy felt roof that I would expect to last 2 winters if lucky! People here have raised concerns with the builder, but up front as a...

Actually the quote was to build the whole thing out of concrete blocks and render it. He did explain why he chose to use blue engineering bricks at the bottom instead but I can't remember, to be honest I just trusted his judgment (and without being qualified wouldn't have known differently). The...

Cheers I'm pretty sure we said it verbally but can't see anything on the quote. However as I've said earlier from a "customer" angle I think 95% of customers would consider it a reasonable expectation for a building to be watertight unless advised otherwise, as we simply don't have enough...

Sorry I’ve made a bit of a mistake. At the sides the slab is below ground level but with gravel slightly above. At the front the slab is below ground level, I’ve just done the watering can test and water does come in.

I hear what you’re saying but I honestly thought a reasonable expectation of an outbuilding is that it would be designed not to leak water, otherwise how can you store stuff in there?

Finally a picture of the building just in case something isn’t clear about it’s construction that matters. Unfortunately I don’t have a long spirit level to check levels

Secondly the penetration and watering can test. I’ve run about 5 litres of water from a watering can without the rose into each - about 30 seconds - and taken photos from the inside. There are 3 suspect areas - one on one side and 2 close together on the other. You can see that it’s coming...

Ok massive thanks for helping by the way. I’ve taken loads of photos and rerun the watering can test. Firstly the roof. There was a bit of rain last night hence slightly wet. Hopefully you can see that the sides have a “lip” to prevent water run off, this is sealed with some sort of rubbery...