Rain blowing into flue and into boiler - HELP

Morning all,

We have a roughly ten year old Potterton boiler installed before we moved into the property 5 years ago and I've discovered that rain is blowing into the flue and then is coming into the boiler.

This weekend post the storm I'd say it took in at least 2 pints of water which then came onto the worktop and messed up the mdf cupboard.

I called two of my plumbers and they said in short it's a common problem which I can't believe as why in the world would someone install a flue like this and then deem the possible problem as acceptable!!?

It's beyond me that this kind of fault is 'acceptable' as well as being unsolvable, I've attached pics of the water which came in last night and the flue install to show how it's always been.

I believe the problem has been present for a while it's only since I was brave enough to remove the cover myself that I have highlighted the problem.

Anyone else had the same if so how did you resolve it as I don't want to spend out 4k for a combi replacement to solve what I feel is an ill installed flue.

Thanks all

A flue terminal guard would probably help, by acting as a partial baffle for the wind.

There's nothing technically wrong with the flue from what I can see. It's unfortunate you're getting quite so much water in, but other than relocating the terminal to a different wall out if the prevailing wind there isn't much that can be done

Get the heat exchanger checked
Get the exhaust and inlet air analysed.
Not uncommon for sump seals to fail causing water to pool like you have. Turret seal often fails

was this boiler meant to have plume diverter kit fitted?

Is it coming in via the larger pipe or the smaller one that's within it?

I had sideways rain* come into my combi boiler in a previous house, blew the fan motor 3 times until I fitted a flue terminal with a solid base on like linked to above, but it had a solid end.


*Sideways rain = rain blown sideways by the wind.

Looks like a Potty Promax to me, you're quite likely to find that the flue seals have failed, and some, or all of that water is condensate, as DP pointed out above.
If its a 70/110mm flue, you may have difficulty getting seals