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  1. mrrusty

    Need help with damp!

    Whatever you do, you don't need to lose them. They will be really hard encaustic tiles. Photograph them, lift them, clean them up (which can be a fair bit of work - we did ours with a rotating wire brush to get mortar remnants off) and then relay them. They are definitely worth keeping. Likely...
  2. mrrusty

    Sick of Mould behind radiator

    Originally cavity walls were designed to isolate the joist ends from the wetter outside wall so they didn't rot off - i.e. nothing to do with insulation. Then, in the era of lime mortar and plaster, and breathable materials, cavity walls were designed with airbricks in to the cavity so that any...
  3. mrrusty

    Sick of Mould behind radiator

    Definitely! :ROFLMAO:
  4. mrrusty

    Sick of Mould behind radiator

    You can't change physics. The radiator creates airflow through convection. Obviously the air drawn over the back of the radiator is humid enough, and the wall is cold enough for the wall to be below the dew point so you're getting liquid condensation and mould. You can only increase the wall...
  5. mrrusty

    Buying a property that had an extension built with no sign off but permission granted

    It's 2009, so whatever happened it's way past enforcement. Use your own eyes, and also get a decent survey done. If it all looks good and you like it, go ahead with an indemnity if your BS insist. If you are concerned, walk away - lots of other properties out there. Whether you get a sign-off...
  6. mrrusty

    Quality of newly installed wooden sash widows?

    Sounds like a result, although obviously hassle. Good on the company for at least taking ownership.
  7. mrrusty

    Building Regs Property Search Results

    Frankly, that is cobblers up until someone shows me the wording from an actual insurance policy that states this exclusion for 20 year old works. It certainly isn't in mine. And if an extension is looking good with no cracking after 20 years, I think it's fair to say it's OK. We bought a very...
  8. mrrusty

    Quality of newly installed wooden sash widows?

    Those internal micro cracks by the latch show a lack of attention to detail, but TBH are unlikely to be detrimental to performance - I doubt the latches will fall off! Even so, I expect you paid a lot of money and have every right to expect a perfect product. Some screws are self-drilling but...
  9. mrrusty

    Quality of newly installed wooden sash widows?

    Looks like however they have made the joint has split the rail. Send the pictures to the MD at the company and ask if he is happy with this because you are not. They have a nice website. I suspect they won't want those pix against their name. Edit your post to remove it for now, and tell them...
  10. mrrusty

    Building Regs Property Search Results

    It's 20 years ago!. Are you bothered? certainly the LA won't be, so this is just a tick-box exercise. As long as it surveys OK, take the path of least resistance - maybe just accepting the conveyancer says it's OK, or maybe an indemnity if necessary (a waste of time and money, but sometimes...
  11. mrrusty

    What do I do with this Garage?

    yes
  12. mrrusty

    Unidentified conduit

    I suspect there's more around than you think. Son's house in E17 has just been completely rewired but had singles in conduit like this in many places. 18 months ago he did have the CU replaced and all circuits passed testing at the time....
  13. mrrusty

    Outbuilding Raft Foundation

    Here's a raft I did for a garage. It's 150mm in the centre with an approx 300x450 edge "beam". My C.Eng MICE son sprinkled holy water on my design and said it would be fine, as it has proved. https://community.screwfix.com/threads/garage-work-in-progress.222282/ The stepped edge has proved 100%...
  14. mrrusty

    Kitchen extractor advice sought

    Yes - was connected to one of these https://www.quirepace.co.uk/wp-content/uploads/2023/07/Nurse_carrier_543.png and we ended up having to install a valve to block of the service tube when not in use to stop the chimneying effect of the air being pushed through all the time by the pressurised...
  15. mrrusty

    Kitchen extractor advice sought

    I hope you've found all the comments helpful. It sounds like you have your head around this challenge, and like you, I like to find solutions. I'm 100% sure it can be made to work - it's just getting all the factors in play worked out. FWIW, in a different world, I have installed 160mm tube...
  16. mrrusty

    Kitchen extractor advice sought

    Look, I'm not a ventilation specialist, I am however a specialist in air movement in pipes for central vacuuming and pneumatic transport, hence the advice to talk to a specialist in this field. Input the parameters in to AI and see the answer! There are several challenges - enough flow to push...
  17. mrrusty

    Kitchen extractor advice sought

    That's because fires are very hot!. The problem here is the static back pressure. Pushing an air column vertically gives you a back pressure, and the smaller the duct and faster the airflow, the bigger the back pressure. For many fans the flow rate starts falling off a cliff as back pressure...
  18. mrrusty

    Kitchen extractor advice sought

    It's not the distance, or even the direction - it's the temperature gradient. A normal kitchen extractor will be extracting warm humid air full of cooking byproducts. The short duct runs mean that the gases and vapours are still warm gases and vapours when they get to the open air. In a...
  19. mrrusty

    Kitchen extractor advice sought

    I think I would seek advice from a professional catering extraction company. The condensation hazard is not just water, but cooking fats and grease that will condense on the inside of the flue potentially presenting a fire risk, which the chimney effect will exacerbate should it ever ignite. In...
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