Vent for steel shed

blade1 · 04-09-2015 7:27am #1

Looking for advice on venting a steel shed.
At the moment the the only way it vents is at the sides where the corrugated roof meets the walls.
The problem I have with this is when it rains it is geting in there.
So get a load of moisture in the winter.

I am thinking of sealing it up with expanding foam and fitting a couple of vents.
Is this the best way to go about this and where would I pick up suitable vents.

Calahonda52 · 04-09-2015 9:57pm

any chance of a picture?
think about a vent in each gable

blade1 · 04-09-2015 10:34pm

Calahonda52 wrote: »

any chance of a picture?
think about a vent in each gable

I'll take a pic in the morning!

CJhaughey · 04-09-2015 10:48pm

What is the ridge arrangement?
If there is a steel ridge then a few hole in the apex of the roof to allow air to escape up is a good way to get airflow moving.

blade1 · 04-09-2015 11:02pm

CJhaughey wrote: »

What is the ridge arrangement?
If there is a steel ridge then a few hole in the apex of the roof to allow air to escape up is a good way to get airflow moving.

Yes there's a steel ridge.
What about rain if I put holes in it?

CJhaughey · 04-09-2015 11:57pm

blade1 wrote: »

Yes there's a steel ridge.
What about rain if I put holes in it?

I don't mean drill the ridge, usually the ridge sits above the metal and has some airflow underneath it.
If you make holes in the roof under the ridge cap it will allow the ridge to breathe.

blade1 · 05-09-2015 12:29am

Ah right gotcha!
I'll have a closer look at the ridge tomorrow, cheers.

blade1 · 05-09-2015 8:46am

There's no air exiting at the ridge as the guy that made the shed has put a kind of a foam insulation thing in there I presume to stop the rain.

And pics of outside and inside where roof and wall meet where some of the rain comes in.

gutteruu · 05-09-2015 10:51am

You can get 'profile fillers' which he used in your ridge aswell. If waters coming in on sides I'd just get a piece of 90+ degree flashing made and have it hanging over edge to stop rain coming in. It would allow you to keep your airflow.

blade1 · 05-09-2015 10:58am

gutteruu wrote: »

You can get 'profile fillers' which are long pieces of foam the exact profile of the sheeting to fill all those gaps. Most steel sheeting companies will have them. They need to match your sheets obviously.

So I could do the sides with the profile fillers, that would be sufficient?
What could I do with the ridge to vent then?

I don't think there is enough of the roof underneath it(about 2 inches) to remove the "profile filler" as I think rain will get in there.
Could I make the ridge cap bigger?

Edit: just saw your added on bit now.
Flashing on the sides would help alright.

CJhaughey · 05-09-2015 4:35pm

What about fitting guttering? That should stop wind blowing the water off the roof back into the shed.
Check the foam piece in the middle, it should still be able to have holes cut into it, have you any pics of the ridge piece outside?

blade1 · 05-09-2015 4:57pm

CJhaughey wrote: »

What about fitting guttering? That should stop wind blowing the water off the roof back into the shed.
Check the foam piece in the middle, it should still be able to have holes cut into it, have you any pics of the ridge piece outside?

I was thinking that too.
Maybe put an ibc tank round the back and have the rain flow into that.
Do u think gutters would fully keep out the rain out of the shed?
Can't get a pic of the outside ridge outer.

CJhaughey · 06-09-2015 11:45am

I think gutters would do a lot for keeping water out, the antidrip material goes to the outside of the roof panels, and any water dripping off the roof can get wicked back up to the inside. Cut the material away from the edge of the roof and fit a gutter and it should stop most of the water coming in the eaves.
The roof apex should be vented for the best ventilation though, I would investigate how the foam is sitting in the apex, there must be space above it I would think.
Rain water is good for washing bikes as well, no chemicals etc.

blade1 · 06-09-2015 1:20pm

I'll try and check out properly during the week to see I f there is some sort of venting under the ridge.

Vent for steel shed

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