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  1. Rob broom

    Cracks in aerated blocks - celcon and thermolite

    Thinking a bit more about it, I’m hoping that the cracks are under the windows, because the walls are weaker there. Being that that the crack has an easy place to start in a window because the top block doesn’t have one on top of it to strengthen the join. The cracks under my window reveals...
  2. Rob broom

    Cracks in aerated blocks - celcon and thermolite

    Ok cool! Will bear that in mind for future mixes! cheers
  3. Rob broom

    Slight deformation in a catnic lintel

    Hi there. new to the forum and finding it really useful, so thanks in advance to anyone that reads this and replies. firstky, I have no previous experience of installing these lintels! I just wanted to check if a minor amount of deformation in a catnic lintel is to be expected, or whether...
  4. Rob broom

    Cracks in aerated blocks - celcon and thermolite

    Ok cool! Thanks for that woody! reassuring that it is common! Hopefully that will let me sleep a bit tonight! Where the cracks run through multiple courses, going through the vertical mortar joints (above and below the cracks in the blocks), is it worth spending half an hour taking the...
  5. Rob broom

    Cracks in aerated blocks - celcon and thermolite

    Thanks. yeah, I’ve read that a million times but don’t ever see anyone mentioning the issue happening under windows. one crack is not near a window, it is in a larger area of wall at ceiling height and passes through through 5 courses of blocks in total. Going through three blocks and 2...
  6. Rob broom

    Cracks in aerated blocks - celcon and thermolite

    Hi! Would anyone be kind enough to offer some advice? i am currently working on a 1 & 1/2 story extension to my house (single story with a room in the roof). I’ve followed the instructions from the architect, structural engineer and BCO throughout and havnt cut corners! ground underneath was...
  7. Rob broom

    Underfloor heating not circulating!

    Hi! yep, that was the first thing I did! All clear! right....... I think I have found the answer to the problem! I just played with the motor settings and put it on “Constant curve - max” and the flow indicators have shot up! so, it’s a pump setting issue! should I leave it on this...
  8. Rob broom

    Underfloor heating not circulating!

    Thanks for that. I had those thoughts? But I’m confident that the pipes are all good cuz as I say, when the system is running and I let the water out of the drain tap, the flow indicators go high and everything flows perfectly I have been manually opening and shutting each zone with the...
  9. Rob broom

    Underfloor heating not circulating!

    Hi! Hopefully somebody will be willing to help me with this issue? I have bought and installed a underfloor heating system. I have followed all of the instructions on installing and priming it and I am satisfied that I have done a good job! however, the system does not seam to circulate! I...
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