Flue sealant for roof

[devongirl76]

The sealant where our flue comes into the boat on the roof is coming away meaning we have a persistent drip (and subsequent hiss on the top of the stove) when it rains

Will high heat resistant silicone do the job or do I need to use something else? Currently looks like black silicone type stuff has been used

[rusty69]

6 minutes ago, devongirl76 said:

The sealant where our flue comes into the boat on the roof is coming away meaning we have a persistent drip (and subsequent hiss on the top of the stove) when it rains

Will high heat resistant silicone do the job or do I need to use something else? Currently looks like black silicone type stuff has been used

Yes

[mrsmelly]

10 minutes ago, devongirl76 said:

The sealant where our flue comes into the boat on the roof is coming away meaning we have a persistent drip (and subsequent hiss on the top of the stove) when it rains

Will high heat resistant silicone do the job or do I need to use something else? Currently looks like black silicone type stuff has been used

Yes it will. Are you sure of the point of water ingress?

[Dave Payne]

Yes, dont use cement, it just cracks, i used a 300 degree one and its still sealed ok.

[devongirl76]

21 minutes ago, mrsmelly said:

Yes it will. Are you sure of the point of water ingress?

You can see the silicone is lifted and it then drips in from the brass ring on the underside of the flue so yes - pretty sure

[Sea Dog]

2 minutes ago, devongirl76 said:

You can see the silicone is lifted and it then drips in from the brass ring on the underside of the flue so yes - pretty sure

Water could be finding it's way into the insulation between the roof and your deck head (ceiling) so don't delay the fix too long.

[Richard10002]

Plumba is fine at ceiling height. Good up to 300C IIRC

Edited December 14, 2017 by Richard10002