Hi,
I have a 6 year old semi-bungalow with a steeply pitched roof clad with concrete tiles.
The kitchen extractor flexible pipe runs up into the roof space, and protrudes through the roof tiles, terminated by a concrete tile cover.
During the first couple of years of ownership from new we noticed that during moderate/heavy rain, water was entering the vent pip and dripping down through the cooker hood.
The builders supposedly rectified the problem.
After changing the cheap 'n' nasty cooker hood for a stainless steel 'range' hood we found that the builder's solution to the leak was simply to introduce a angle to the vent pipe which allowed water to collect inside the pipe, but prevented it from entering the cooker hood.
I need to resolve the problem. It is not condensation - moderate rain produces a steady trickle of water that is definitely running down the interior of the vent pipe. Thus, it must somehow be entering the pipe in spite of the roof ventilator tile (which covers the assembly)
I have no experience of roof tiles (and was hoping to die before gaining any!) but I must now investigate why the tile (which appears to be adequately covering the rigid plastic pipe that protrudes through the roof) is admitting water.
I have yet to examine the pipe from inside the roof space (a joy reserved for tomorrow via a 1 metre wide crawl spece that runs at the edge of the roof). On the exterior, I have cleared leaves and debris from inside the vent tile, so there is no build up of rain water that might overflow into the vent pipe.
Google is sparse on instructions for fitting vent tiles - but there are some references to 'traps' that channel excess water back out onto the roof - I don't know whether this is fitted in my case.
I would appreciate any suggestions for
a/ the likely cause of the leak
b/ how to remove the vent tile without breaking it ( seems to be held by some sort of flat spring)
c/ any other thoughts for rectifying this issue
many thanks