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Nickfromwales last won the day on September 19

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About Nickfromwales

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    Advanced Member

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  • About Me

    I am, in relation to my business, currently offering the following services to the public.
    Site survey.
    System design.
    Products / equipment procurement.
    1st fix installation.
    Gas / oil / LPG / SunAmp.
    Solar PV & Solar thermal.
    Heat pumps and geothermal.
    Whole of house wiring.

    Please PM me for further information about these services, or for general information just post a new thread here on Buildhub for free, impartial advice. :)
    Regards, nick.
  • Location
    South Wales.

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  1. My 2 cents says if you manufactured with a flaw, eg a cavity between the Ali and the wood where interstitial condensation is promoted, then that a poor design. My point about cold bridging was that ‘cold’ shouldn’t be able to get ‘around’ ( beyond ) the thermal break. 🤔 Agree with @nod as when the fruits bead up on the external angles and they end up fatter than the opening, then good luck when you go to open the window ( after the fitters have squeeze them in ) as they’ll hit the reveals Good practice would be to discuss this with the plasterers well in advance and flare the reveals sufficiently to take the depth of the corner bead.
  2. Nickfromwales

    Luxury HMO

    Oh, and best not to forget that the discharge only happens when there is a fault, so the longer that goes unnoticed.......... ”This message ( and your luxury HMO ) will self-destruct in 5 seconds”
  3. Nickfromwales

    Luxury HMO

    Not too much I’m sorry...... If you had a catastrophic failure and the cylinder hasn’t been installed to the MI’s then your insurance could refuse to payout. I’ve heard that in a block of flats with around £30k worth of ( uninsured ) damage done. Next issue is if there is no integral air break on D1 then the downstream discharge pipe can freeze and block solid, then you have a bomb in your rental property. This really is not just a bad job but it’s very, very dangerous, especially with it going into winter. There is no ‘drip’ from a correctly fitted tundish. Water can pass through at nigh on full wallop if it’s been fitted with the correct size and length of pipe above and below ( D1 & D2 ) so a bit of scaremongering there. FYI, there are two intentional points of visibility for identifying problematic discharge from the tundish; 1) The chuffing tundish being alongside the UVC for periodic owner / self inspection / alert 2) G3 stipulates that the end of D2 terminates where it is visible, and that it terminates 100mm above outside finished floor level. The intention is the same with the old overflows from attic tanks where the overflow gives you a shower when it’s operating, eg so you do something about it sharpish. Reason being is that is potable drinking water that is being discharged so the water bylaws state that that cannot be happening ‘behind the scenes’, hence the open tundish inside the dwelling at the UVC and the external overflow discharging where it’s continued operation wouldn’t go unnoticed. The regs are there to be followed, so no slack for your guy from me, sorry. 👎 If everybody started putting ‘their spin’ on things then regs would be pointless. FYI #2, the Hotun tundishes have clear click on covers so can prevent your mans dreaded splashing if he’s that bothered. The only thing that make the tundish splash is not enough pipe above it and the same below / invert to close so it backfills. Nah, the more I type the less slack they get. It’s needs sorting. If your happy to be relaxed about it then that’s up to you. If you rang the governing body up and told them how it’s fitted they’d tell you to turn it off immediately. Your call pal 😉
  4. Nickfromwales

    Luxury HMO

    100%. Tell piss face builder to get ‘qualified ring-piece’ back to do the job properly. The installation manual will be handy to have to hand to demonstrate that the tundish MUST reside with the UVC, and his ‘interpretation’ of how it can be done, to make his life easier, is actually a breach of G3. The rules are there to be read and followed, not ducked and dived around. Jeez. Also, and this is VERY important, ask him if EVERY SINGLE mixer outlet ( showers / bath fillers / mono-block taps etc ) EVERY SINGLE ONE WITHOUT DOUBT have the cold water coming from the balanced output of the control group ( the multi function valve alongside the UVC ). If he shrugs his shoulders or cannot answer the question then the UVC is on borrowed time. Ask and update please.
  5. Nickfromwales

    Help required wiring my ASHP/UFH

    Its only meant for commissioning Its for filling and draining the system when powered down. Where a motorised valve and cylinder stat are inclusive of the system design, you should never run a system knowingly bypassing the safety features ( the cylinder stat ). Also, for an ASHP installation, each flow ( DHW or Heating ) command different flow temps so another reason not to 'cheat' it.
  6. Just a bump for our newest members.
  7. Scores of houses are like this, no regs, no BC and no approvals. Simply value it less the room in roof, other than as posh storage, and then retrospectively convert it properly with BC application and then get the house revalued and insured accordingly ( if you need the attic to be a bedroom that is ). It can be a nice kids playroom or cinema room etc, just not a habitable space, but PLEASE do get fire / smoke detectors right the way through all 3 floors regardless. There are some great bluetooth connectivity smoke detector systems out there now which mean no interconnecting cables required, just get 230v to them from the nearest light fitting and job done.
  8. Nickfromwales

    Acid stained concrete floor finish?

    Yup. Looks like a giant block of mahogany to me. End cost per m2?
  9. If ph windows benefit from a cork / other thermal break in their construction to reduce the huge cold bridging, then leaving the face gapped at the sides would throw that straight into the bin. Ventilating to the cavity is great if you’ve got a cavity, but the thought of driving wind and rain not being deflected / otherwise arrested would not be a good thing imo, so for me it would have to be sealed. If those gaps were fully backfilled with foam after installation I fail to see how condensation could occur ? Afaic leaving the gap is what would cause / promote the problem, not cure it #confusedofwales
  10. Back up is one thing, so that was not aimed at you, it’s for those who have underestimated the ‘need’ for heat and how to best deliver it, both comfortably and conveniently. Having to employ auxiliary heating should be the exception not the rule at best.
  11. If you’re going to the efforts of building your home to such a good standard, what a bag-o-crap it must be to litter it with £30 heaters you ran out to get from Argos when your wife told you “I told you ‘“ UFH is the number one way to heat imo, and in conjunction with a decent slab ( as opposed to a thin screed ) you can realistically plan for fine tuning your heat input to the nearest 0.5 degree. Heating by duct ( given it also commands a much higher airflow rate ) would be the last option for me to look at tbh as a generic MVHR should be near inaudible and unnoticeable in operation, and to use it for heating in anything other than a ‘small’ dwelling would take you away from that target. Accepting that higher flow rates are necessary, when cooling is utilised, is easy when you compare it to the rather unsympathetic alternatives ( split aircon ) etc.
  12. Nickfromwales

    NPT fittings

    Cant ignore an educated recommendation though eh?
  13. Nickfromwales


    QS was ~£200 for the above.
  14. Nickfromwales


    Hi If you plan on being hands on, a QS can give a valuable insight as to whats going to cost what. On an extension project I found it made an invaluable reference document to glean extras we had ( sometimes inadvertently ) undertaken, and basically identify anything that was above the original contact ( and therefore was chargeable ). If you're not hands on and are using a contractor then its equally of value IMO, for the Friday afternoon sit-downs where the stage payments are approved; eg how much work was supposed to have been done and what HAS been done to warrant the next stage payment.