Any suggestions on a siloxane-based sealant that will last for 5-10 years that doesn't have a gloss coat? There is some water penetration occuring through either the brick or grout. thanks for any help...du
Nowadays we always put a lead tray in just above the rafter line on a new or rebuild as shown in the video here. http://www.justlead.co.uk/dpc-chimney-tray.html
Damp penetration in stacks has always been a problem here, especially now that people tend to use their central heating more than the open fires which dried out the stacks.
Siloxane is good, but a tray is a more permanent solution and part of our codes now.
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