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    Damp plaster and stains

    Have a look at Peter Ward/Heritage House on YouTube - an education in damp, causes of, and con artists.
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    Water main upgrade but with small 15mm section inline?

    Unless you live in a mansion which you don't since you've got a combi,or the supply pressure is really **** poor, there really shouldn't be any need for any 28mm piping for water. We use 28mm copper in domestic houses principally to supply sufficient gas for the ever more powerful combis now...
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    Water main upgrade but with small 15mm section inline?

    First rule of plumbing, as taught by my old Master Plumber gaffer - don't restrict your flow rates. The 15mm section will restrict all services downstream to whatever that section can supply for your supply pressure. Find a way to size up to 22mm. It's fine to run the water main under floor...
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    Close coupled conundrum

    Went to a job today, close coupled concealed cistern in ground floor toilet was not flushing away properly. First try it was clearly siphoning - glug glug at the end of the flush. No ventilation; obvious really. Sure enough when I pulled off the front plate no sub stack, just a flexi into a...
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