Plastic Roof Vent Tile

[Sonic70]

My parents had an extension built a few years ago and the builder fitted a plastic roof tile vent which is connected by flexi pipe to the bathroom extractor fan. The roof tiles are marley moderns by the way. In some heavy rain water was dripping from the extractor fan. When I went up on the roof i found the vent tile was not sitting flat due to the headlap of the tiles. Part of the underneath profile of the vent tile was interfering with the tiles below and so the vent tile was being pushed up. I am now trying to find a way of sorting this, is it allowable to cut part of the tiles below so that I can get the vent to sit properly, this would probably mean removal of one of the tile nibs which sit behind the batten. Any help appreciated.

Victor

 

[datarebal]

Some of the plastic vents had a sort of box underneath.
If the tiles were on at a tight gauge of less than 12 inches this interfered with the tile below.
I'm guessing this is the case.
Best bet , junk the vent tile. Use a lead slate , a weathering collar and mushroom cowl

 

[Sonic70]

Thanks your spot on, I will look into your suggested solution. They used to manufacture a concrete vent tile which would of sufficed, might see if any reclamation yards have them as well as your idea.

Thanks
Victor

 

[datarebal]

I've seen concrete ones fail ... careful

 

[Sonic70]

Thanks, where do they normally fail, I've got one on my roof which has been there for 15 years any looks ok.

Victor

 

[datarebal]

where the tube passes through the concrete tile.. choice is yours of course

 

[Sonic70]

Would you say not to cut the tiles below if it means removing one of the nibs on each tile.

 

[datarebal]

Cut the minimum . Watch the head laps but it is doable .
Just not what I would do

 

[Nige F]

Marley make their own plastic vent tiles for individual types .Maybe a universal vent was fitted ?

 

[Sonic70]

I don't think its a Marley one. I've got options now on what to do.

 

[datarebal]

klober probably

 

[Sonic70]

I think it might be klobber, it certainly looks like one of theirs I saw online

 

[catlad]

I have to replace two concrete tile vents that have failed on a 15 yr old extension.