180mm roof vents

[thomas]

I have a plain tile roof and am planning bin putting the supply and exhaust on the roof, it's a bungalow so I don't really have roof on the walls.

I am having troubles finding suitable roof vents suitable for 180mm ducts with a hight enough capacity.

 

Has anyone got any one got any product recommendations?

Edited September 18, 2018 by thomas

[Declan52]

Who ever makes your chosen roof tiles will have a vent tile to match. Put a 150mm to 100mm reducer on and then put your extract/ intake on. Attach with tape/cable ties.

[thomas]

Won't 100mm restrict air flow too much?

[Declan52]

Never seen a vent tile with anything other than 100mm on the underside.

[thomas]

Does not need to be a tile vent, also I would have thought they'd get blocked by snow?

[Declan52]

They won't get blocked by the snow.

[PeterW]

Timloc do a vent with 180mm from memory and it has reducers to take it down to 100mm in stages. 

 

180mm is a big duct - what’s the flow ..??

[thomas]

Flow is around 55 l/s off the top of my head.

If I use 2 tile vents per supply and exhaust and split with a 180mm Y then reduce to 100mm do you think this will work?

[thomas]

Thanks @peterw you made me go check th duct size on the unit and it's 150mm, i was told the wrong size ?

That should be easier to find vents.

[AdamSee]

Did you find a suitable vent for your roof?

 

I'm currently having my roof re-tiled with plain rosemary tiles and I was really struggled to find a suitable vent, in the end I went with the Ubbink UB41. They have the usual looking dome with the air that comes out underneath and provide 20k of air movment. Theres a option for plain tiles but I couldn't find one in terracotta colour. So in the end I went for the universal one, which just has a plastic skirt that can go under the tiles. Won't look as good, but should do the job.

 

They go up to 160mm aswell, Bit smaller than you require but I would have thought it would been fine.

 

Edited October 22, 2018 by AdamSee