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leak or no leak? Empty leak or no leak?

Post by raymondo on Tue Dec 18, 2018 12:20 am

yesterday we had gales and over 2 inches of rain.
I noticed that the 'cardboard' flue for the gas fire was damp, not dripping wet just a bit damp.  the ceiling around it (say one inch away) was reading 15% on my Micky Mouse damp meter but 2 inches away was reading nil.

could this be water blown down the top of the flue or do I have a problem?
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Post by burlingtonboaby on Tue Dec 18, 2018 6:13 am

Had the same problem on the Sigma ,when pitched up in Whitby during a weekend of gales and rain, soon dried out with the gas Fire on.
The Sigma a had a roof shaped like an up turned small dingy ,it collected water on the roof,I set the rear air ride or levellers to enable to water to drain off the rear.
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Post by bikeralw on Tue Dec 18, 2018 9:01 am

I had this happen when six inches of snow on the roof started to melt, water discoloured the first 8 inches or so of flue pipe.
It soon dried when the gas fire was used, but the flexible flue pipe is still stained.
I believe there's a flue outlet extension available that raises the outlet, but while this might work for snow, I doubt it would with horizontal rain...
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Post by Peter Brown on Tue Dec 18, 2018 9:41 am

You don't describe the circumstances, temperature in van, electric heating in use, etc? If the temperature in the van is high and that in the flue cold, you will get condensation (a lot) on the outside of the flue.

The external flue outlet is screwed into the flue through the roof and an external rubber seal. As the seal deteriorates it is susceptible to allowing sideways driven rain in. Just nipping it up might cure or you may need a new rubbers seal.

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Post by raymondo on Tue Dec 18, 2018 10:27 am

You don't describe the circumstances, temperature in van, electric heating in use, etc? If the temperature in the van is high and that in the flue cold, you will get condensation (a lot) on the outside of the flue.



the van is parked up unheated, the flue had new rubber seal fitted (precautionary) maybe two years ago, there is a flue extention fitted (fire wouldnt light on even a breezy day without it).

The weather was horrendous with driving heavy rain for 12 hours or more I will lift the drivers side a bit to make sure that water isnt pooling around the flue and see if that helps
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Post by Slaphead on Tue Dec 18, 2018 10:35 am

I always pop a plastic bag over the cowl when my 'van is not being used in the winter. I did notice the wet rings on the flue pipe a few years ago and started using a bag.  Never have a problem now, just remember to take it off when starting to use the 'van again!

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