TerryE

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TerryE last won the day on March 24 2017

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About TerryE

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    Northamptonshire, UK

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  1. TerryE

    Velux onto sarked Roof

    I am curious as to why your spec has the sarking over the battens. Our TF warm roof is sarked with the roofing fabric directly on the sarking and the counter battened and battened on top of that and then slated. We have Fakro room lights and you need to choose the frame model and mounting kit depending on the covering profile, so you need to choose the correct combination for a top sarked profile. I assume that the same is the case for Velux. Your figures are for a batten over sarking profile.
  2. TerryE

    My Nightmare Heating System

    1=physics, 2=maths 😉
  3. TerryE

    Decrement delay of vacuum panels

    Yup, a green roof looks so much better than other coverings if viewed from above. Keeping the neighbours on your side really helps with planning very approvals, IMO -- not so much formally but the odd letter of support helps with comfort factors for the LPA. It can also help during construction, because the build process does inconvenience neighbours and they are far more likely to grin and bare it if they like the outcome.
  4. The problems will start with insurance -- you might find that your house insurance is invalid if BControl refuses to sign it off -- and trying to sell your house in the future.
  5. TerryE

    Decrement delay of vacuum panels

    In plain speak, just like N-glazed windows, the decrement delay is tiny -- effectively zero. That means what whilst the aggregate U value might be small, there is little or no lag in that thermal leak passing through the roof. If you want to integrate up / average out the heat then the simple way is to add some mass above the roof, but rather than concrete, why not go for a green roof? This will also give you shade and some evaporative cooling as well as looking a lot nicer than most other finishing surfaces.
  6. Try sticking to a PK diet and we'll get you down to 15! @JSHarris, at one stage, I did consider volunteering to be a Cochraine reviewer, so I do understand the process, but you have to work within the ToR of the published review and the data underpinning it. In the case of medical trials, because of patient confidentiality, you rarely get to see anything other than sanitised data, and you only get access to the published content, as historically contemporaneous change control was rarely maintained in the trials process, so it is very difficult to pick up practices such as in the PACE trials where they changed the study design during the study when it became clear from early results that the original design wasn't going to produce the desired outcome. As I said the drug companies funded 18 statin trials, and no doubt Cochrane made sure that their conclusion that statins reduced fatal and non-fatal CVD compared to "do nothing". No argument. But taking Clive's case are statins@20st more effective than no statins@17st or even having someone on his case to get him to lose another stone or two and do a bit more exercise? We can't say because this type of trial will never be funded. At least statins are now available as generics and so the cost per patient is perhaps 10p /day. But this isn't the case for more recent drugs.
  7. The limitation of the Cochrane approach here is that it largely does meta analysis to aggregate the results of a related cluster of trials, and use statistical aggregation to draw out stronger conclusions than the individual studies can make. The process does not deep dive into the individual studies to assess how well they implement best study practice, nor do they attempt to mine all of the abandoned studies that were coming up with the wrong answers. So whilst Cochrane can remove silly outliers and represent the study consensus, they don't highlight systematic flaws or biases. So in the case of use of statins for cardiovascular disease they correctly aggregated 18 RCTs comparing the use of statins against with usual care/placebo. So yes, treatment A which involves long-term expensive drugs is better than do nothing. But treatment B which involves lifestyle changes on the part of the patient and potentially reduces the income of the drug companies has absolutely no chance of finding funding for trials, and so we can make no trail-based statements for treatment B vs do nothing or even treatment A vs treatment B. I remember looking at a similar Cochrane review on ME/CFS and even went through the actual studies, and came away deeply uneasy and dissatisfied. The average of a pile of shit is still a pile of shit.
  8. My real point here is that Fluoxetine is an SSRI that might be an effective treatment for certain types of clinical depression, but there is evidence to support that CFS patients are in general suffering from clinical depression so IMO its use is entirely inappropriate. As I said to my GP: I am fed-up with being bed-bound, but being fed-up is not the same as clinical depression, so no thank-you. Most trials are funded by the drug majors who have vested interest in proving that long-term repeat prescription of some drug is an effective treatment. The trials are badly constructed and often have shifting success criteria. Those which reach negative conclusions are quietly shelved on cost grounds before being reported. @JSHarris, I think that your being prescribed ARB is a good case in point. IMO, another case in point is the use of statins. I accept that they are effective in reducing the risk of heart disease if you have high blood pressure or other arterial problems, and especially if you don't exercise. However, surely patients should be supported in trying to use dietary and life-style changes to address these risks first? Or do we just give up and put everyone over 50 on the bloody things?
  9. If you've watched any of Hans Roslings GapMinder talks then these provide a slightly different interpretation. Basic stuff like A basic understanding of sepsis, hygene, clean drinking water and sewage disposal Adequate nutrition Vaccination programs Improvements in anti and post natal care are the dominant factors here. That's why places like the province of Kerala in India has a higher overall life expectancy than Washington DC in the USA. A lot of the improvements in healthy care are now largely nullified by the -ve consequences of the high-carb excess western diet, leading to obesity, high blood pressure co risks and diabetes. IMO, UK healthcare is good (or in fact great) in parts, but there are whole areas where it performs poorly. A good example is CFS/ME that @Cpd and I suffer from, and people with other systemic diseases like IBS. If you read the NICE guidelines, they attempt to distill all diagnosis and treatment down to simple ladder logic: do this test, if +ve then proscribe this drug; treatment by the application of point drugs to remove point symptoms. But the human body is not a simple linear system. You must use a systemic approach to diagnose systemic problems. Any mathematician or systems architect will tell you that linear approximations only useful in defined domains, and that you have to take a systemic view to understand the system better. In the case of CFS, a typical GP will offer Prozac and referral to a psychiatrist for CBT. A homeopath with expertise in treating CFS will cover lifestyle, diet, sensible exercise regimes, massage, etc. and yes they will often offer sugar pills. I believe in Avogadro's number over sugar pills any day, yet in this second case the whole treatment bundle is often effective and can be boosted by a placebo effect from those little pills; it is far more likely to lead to the patient's recovery than "Prozac and piss off".
  10. TerryE

    Sunamp heat battery

    It depends where you live of course, but in the UK the number of days per year where the average temperature is below zero is small, and the number below -5°C is tiny. I feel it is a mistake to optimise your heating for the worst case. So what is the life expectancy and annual maintenance costs of your quoted eDual 12s? I suspect 10 years and 5% might be a good ballpark, or roughly £1K p.a. amortised cost. My total annual energy bill is just over that with my twin SAs and Willis heater and no PV. And we also have a largish 4 bedroom house with 3 ensuites and a bathroom and 3 occupants. We have UFH on the GFL only so the 1st floor does get about 2°C cooler than the ground floor when it gets really cold but we don't find this a problem for the bedrooms. I do have a Dyson fan in my office, which might run for an hour or so on really cold days when I am working up in it.
  11. Depends on how you approach it. I see diet is what you eat and how you eat it for the long term. Individuals can find that they have different food intolerances, so you should understand if you have any and simply avoid those foods. High carb diets can cause a lot of problems for many of us as we get older: obesity, high blood pressure, diabetes, etc. In my case I have a very specific problem because a course of antibiotics probably saved my life, but also totally buggered up my gut ecology as a side effect leading to this candida explosion. In my case, changing my diet can address this. Horses for courses.
  12. Use of PK diets is very controversial in the NHS except for some narrow cases such as epilepsy and some diabetes treatments. Anyone who eats a normal convenience high processed carb diet will find this a hard change, but luckily we eat a Michael Pollan-style high vegetable, low carb diet, so going to a Ketogenic is only one step away for me. I am not sure that I will totally eliminate dairy as cheese is such a pleasure in life. But any dietary change is a price worth paying to getting this f***ing candida infection eliminated soon.
  13. I've had my liver function tests done a couple of times, and all clear. I am taking oral flucanozole which has at least cleared the worst of the oral, larynx, tracea and upper oesophagus of candida, as well as the canidemia. I've also switched to a ketatonic diet for the next month or two: human metabolism has two pathways: glycolysis and ketosis; yeasts only the former -- so this will starve the bastards out. Oh yes, and I am definitely HIV -ve. My GP insisted that I take the test for "elimination purposes" with the not so implicit threat that I would be flagged as a non-cooperating patient if I didn't. I won't go into the backstory but this made no rational sense.
  14. TerryE

    Sunamp heat battery

    My only tweak that I am currently thinking of is to double up on the Willis -- mainly to remove a single point of failure, but also allow me to put in more heat overnight (E7) if we do get a long sub-zero spell in the depths of winter. At the moment we have almost nothing in our design that requires regular (££) maintenance. We need to clean the MVHR filters quarter and replace the secondary filter on the MVHR annually. That's all really.
  15. Could agree more, but the catch-22 about the place we bought is that Alonissos isn't that easy to get to, so the upside is that it hasn't been totally wrecked by tourism, but the downside is that out of season the trip is usually a couple of days because of stop overs. Even in season when to can get a direct flight to an island a couple of ferry stops from, it is still a very long day's travel. All a bit of a strain if you can hardly walk 🙁