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Author Topic: fixing terracotta flue liner mortar decay..  (Read 2074 times)
MR GUS
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« on: October 19, 2011, 03:19:10 PM »

Small bits to fix but soot doesn't allow fire cement much adhesion..

I've been recommended by Vallance (BOSTIK) to, as a worst case scenario add a little water let it soak n the mortar sausage leave it a while to increase tackiness & chance of bonding / plug the gap, ..this is where my petzl comes in handy as I can attach it to the bailey blue connectors & get the light in close  to hopefully get more definition , ..the area to plug is on the bend  about 18 inches beyond arms reach  Undecided

Anyone got any bright ideas or just carry on as is?

Appreciate your help folks.

NB its about 2 fingers worth of mortar sausage just to be on the safe side, not ready to do a flow reducing  liner just yet.
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Baz
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« Reply #1 on: October 19, 2011, 06:47:24 PM »

If you have a compressor how about an extension blower nozzle to blast away the soot. Might even be able to invent a way of introducing a bit of sand to the airstream.
You will definitely need to well water the target area to get the cement to stick, but I guess you know that. In a 'dirty' hole recently that I was filling with concrete I first put in a creamy mix of pure cement and sponged it around to soak up the dirt then removed the excess leaving a fresh cement surface for the concrete to stick to.
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