Shed roof apex query?

rpg

Quick question folks. Just had a shed installed and waiting for company to come back to me.

I don’t think this looks right to me, are they not meant to meet in the middle? Or is this a ventilation thing? Seems excessive if so.

Would appreciate your thoughts!

listermint

Ventilation. Needed to keep your stuff from getting damp and mouldy

Cerveza

listermint wrote: »

Ventilation. Needed to keep your stuff from getting damp and mouldy

A swing and a miss there. The membrane should have been installed overlapping the two sides. If there is a ventilation issue it should be addressed with proper roof vents or wall vents.

Richard308

If it’s a kits she’s not uncommon to have a ridge board but I’d want one. The membrane should overlap. Would want ventilation but not water running in

Cerveza

Op can you upload photos of the roof from outside.

rpg

Thanks all for the replies. I had thought the ventilation comes from the sides as there’s a bit of an overhang, and a gap between the roof and side walls there.

Lumen

You might have a bit of a problem with wind-driven rain being pushed up under the ridge, although that site looks fairly sheltered.

rpg

Lumen wrote: »

You might have a bit of a problem with wind-driven rain being pushed up under the ridge, although that site looks fairly sheltered.

Yeah, I’m not particularly happy with that to be honest. I found a picture from a shed in their display yard and it doesn’t appear to have a gap like that. In fact there’s no gap at all.

listermint

Cerveza wrote: »

A swing and a miss there. The membrane should have been installed overlapping the two sides. If there is a ventilation issue it should be addressed with proper roof vents or wall vents.

Take the ridge off put a piece of membrane in.
Or put breathable foam into the ridges under the ridge either side.

Done.

Cerveza

listermint wrote: »

Take the ridge off put a piece of membrane in.
Or put breathable foam into the ridges under the ridge either side.

Done.

Me and other posters have established the errors and the appropriate corrections needed. Your post was factually incorrect.
The breathable foam is a cowboy fix, its no wonder boom 2.0 is in full throttle.

Richard308

listermint wrote: »

Take the ridge off put a piece of membrane in.
Or put breathable foam into the ridges under the ridge either side.

Done.

Foam degrades over time with temperature variations. Moist and wet, then drying out. Not a permanent fix I’d say. Especially timber she’d get right hot in summer and very cold in winter.

The Continental Op

Gap or no gap driven rain will end up in the V groove between the roof panels at the apex.

Me I'd have the gap for air flow to dry that out.

Wider ridge would help.

I make sheds occasionally and stick with torch on felt. To finish that location I use a strip of torch on felt over it. The tin roof adds extra problems.

listermint

Cerveza wrote: »

Me and other posters have established the errors and the appropriate corrections needed. Your post was factually incorrect.
The breathable foam is a cowboy fix, its no wonder boom 2.0 is in full throttle.

I'm not being smart here.

But it's a small timber shed.

There is hyperbole and then there's the next level , which is where you are at.

I've enjoyed this though it made me chuckle. The internet continually delivers on people putting nonsense extremes in unwarranted situations and conversations.


Thanks x

Lumen

Listermint, do you mean foam closure strips?

AFAIK these are a completely acceptable detail. Not sure why they would degrade, they're designed for exactly this purpose.

listermint

Lumen wrote: »

Listermint, do you mean foam closure strips?

AFAIK these are a completely acceptable detail. Not sure why they would degrade, they're designed for exactly this purpose.

Exactly. They're used in this application all of the time. In fact shaped for this purpose.

The Continental Op

voila

https://www.metalroofingsource.com/metal-roofing-installing-the-ridge-cap/

too lazy to find a link for traditional corrugated iron but you should get the idea from the link.

Cerveza

listermint wrote: »

I'm not being smart here.

But it's a small timber shed.

There is hyperbole and then there's the next level , which is where you are at.

I've enjoyed this though it made me chuckle. The internet continually delivers on people putting nonsense extremes in unwarranted situations and conversations.


Thanks x

Size of the shed is irrelevant. Anyway you have learned a lot today.

And for the kiss keep that for your tinder or grinder date.

Lumen

I hate it when mummy and daddy fight.

Cerveza

The Continental Op wrote: »

voila

https://www.metalroofingsource.com/metal-roofing-installing-the-ridge-cap/

too lazy to find a link for traditional corrugated iron but you should get the idea from the link.

That will solve the external water creep from wind driven rain. Condensation drip will still occur from the bare metal ridge capping.

Calahonda52

Cerveza wrote: »

Size of the shed is irrelevant. Anyway you have learned a lot today.

And for the kiss keep that for your tinder or grinder date.

No need for that sort of BS here
another one to add to the ignore list

The Continental Op

Cerveza wrote: »

That will solve the external water creep from wind driven rain. Condensation drip will still occur from the bare metal ridge capping.

Its a shed. A garden shed. Its also a well designed well put together shed when compared to many others I've seen so I really wouldn't be bothered by it. The amount of drip will be minute as the drips will tend to follow the slope of the ridge on the inside and drop off at the lowest point or end up in the foam.

rpg

Thanks to all for the input.

Yes overall the shed is high quality but it wasn’t the cheapest and I do plan on having a workbench/power etc in there so it’ll be used for more than just storage.

It’s hard to describe with pictures but it’s quite exposed. The tolerance just seems a bit excessive, I can squeeze my fingers up through it. I’ll see what they propose, but I’ll probably end up doing something if they don’t. Either the corrugated foam fillers or some felt, thanks for the suggestions.

I’m also planning to run some LED strip lights in that area on the roof but I definitely won’t until I sort it. With that in mind I’m considering running some treated 4x2s from end to end joining at centre beam to plug the gap a little/protect from rain and also to provide a flat surface for the striplights.

Will update the thread for those interested anyway. Thanks again.

The Continental Op

You'll always find plenty of people here interested in other people sheds

On one of our sheds bats get in and roost in that narrow v section. They get in just by the door on the outside where the roof overhangs the door. Its not condensation thats the problem its bat sh!t, from which I can determine its pipestrels that roost there.

hesker

rpg wrote: »

With that in mind I’m considering running some treated 4x2s from end to end joining at centre beam to plug the gap a little/protect from rain and also to provide a flat surface for the striplights.

Will update the thread for those interested anyway. Thanks again.

Don’t think that is the right solution.

As mentioned above the gap should be closed from the outside which will involve lifting the ridge cap and covering the gap with a suitable material such as the foam mentioned.

When I did my own shed I bought a universal ridge kit. This came with a foam/cushion type membrane on a roll that was about 10-12 inches wide with adhesive strips on both edges. Would be perfect for this.

You can see it pictured here but not sure where I bought it

https://www.nwa.ie/

Fairly sure you can just buy the membrane

rpg

Thanks all.

So, the installers weren't massively concerned with the gap. They have tolerances for expansion/contraction however they did allude to it being on the wider side. Removing the left roof panel would have been difficult (nailed in) and possibly could contribute/cause other issues by removing everything and reinstalling. So they did this:



It's quite neat and a good seal, and I benefited from a nice base for a couple of LED battens:



But I think I'm still going to just lift off the ridge and fit some foam like this:

Eaves Filler for Box Profile 1mtr - Pack 5 Pairs (200mm Gap)

It doesn't look to have adhesive, but I could just use a bit of silicone sealant. I think between the foam and the timber on the inside, it hopefully will be enough protection without physically closing the gap. Thanks all for the suggestions.

10-10-20

Looks better with the 'furring' strips. Without some level of closure it would have become sanctuary for spiders and wasps. But you do need to keep leaf matter and birds out from under that ridge. It's a pity there is no suitable flexible mesh instead of low-density weatherproof foam.

rpg

I was out in Goodwins so I picked up some of the foam fillers. Between that and the timber strips on the inside, I think it's as good as I'm going to get.

Was a bit of a pain of a job, but glad I got it done. Just used some double sided tape to keep them in position until I got the ridge back on. Securing ridge down then put pressure on the foam sealing any gaps. Thanks for the suggestion, I think it works quite well actually.