Shed

[fishplate]

I've got one of these type of concrete sheds. every time I go to get anything out it its covered in black mould, is there any way of stopping this. Cheers

[woblylegs]

maybe lack of ventilation. id but a vent in the door. see if that helps

[wanus]

Try an anti bacterial paint.My missus works in a hospital n got some for a similar problem in our bathroom.Also have a look into milldew treatments as this causes moulds on walls inside buildings.

[boingy]

Black mould is mildew and is caused by moisture which, assuming your roof is working, can only be caused by condensation.
Ventilation will help but the only real solution is insulation. You could spend a small fortune on posh stuff but even a thin layer of polystyrene glued to the inside of the walls and roof will make a massive difference.

If you want to go for the ventilation solution check out solar powered vents, typically use on boats.

[Ditch]

I don't know how I even came to be in here ....! But, yeah; Sheds ....!

Straight away spotted that ye have a tin roof on a mineral shed. So have I. Only, I have horses inside mine. Guessing you haven't?

Okay. What ever. Condensation is indeed the bugger. It's to do with the freezing night air sandwiching that roof between the less than frozen air rising from within the relative insulation of those walls.

What happens, with me, is that the underside of my tin roof looks like the outside, when it's been rained on! 'Rain Drops' pearl the entire ceiling of my stables.

Now the vile news: My stables are Very well ventillated. Couple of whole doorways without doors. Big gap along the top side. That said? There's no mould in there .....

Ventilation then ~ bottom of the door to up beneath the roof is usual. That's something to look at.

Insulation? By wall cladding? Just be careful ye don't just lock the problem in behind, where ye can't see the damp wrecking ye walls. That can happen.

Other than that? Just to chuck in a random idea; I wonder if one of these Dehumidifier things might stand a chance, in there? Suck the water out of the air? Guessing it'd depend on the sizes involved here though?

Then, taking it this Is a brew shed ....? That sort of humidity? I'd start with ventilation

[woblylegs]

pin Hessian all over it ditch and it will cure that. heat off the horses onto a cold tin roof causes that what you discribe

[Ditch]

In all truth, legs? I really don't know as I could be arsed to. It's such a huge space, it doesn't impinge on the horses. It certainly doesn't bother me.

Fishplate seems to be working to quite another criteria, however. I agree with ye there: Simple and basic ventilation would be my first port of call too.

[charlie]

Black mould is mildew and is caused by moisture which, assuming your roof is working, can only be caused by condensation.
Ventilation will help but the only real solution is insulation. You could spend a small fortune on posh stuff but even a thin layer of polystyrene glued to the inside of the walls and roof will make a massive difference.

If you want to go for the ventilation solution check out solar powered vents, typically use on boats.

No point in insulating unless you're going to keep the thing heated above the dew point.
What you need to do is ventilate the hell out of the place, at least two vents on opposing walls to get through ventilation.

I brew in a shed and have no mould because there is a ventilation gap on both sides at the eaves.

[fishplate]

I filled all the gaps in that where in the roof, so if I put a vent in the door and 1 on the opposite side will that help.

[Ditch]

Fishplate; The generally held consensus is low at one point. High at the other, opposite. I imagine it has to do with the convection brought about by the 'Hot air rises' thing.

Chicken houses are a very good example / model for all this. Hot things, chickens. They need some serious ventilation. Or else they'd all sauna