scottishjohn

looking at one of the graphs its shows china as second cheapest --.I suspect thats not the real figure --but no proof If this is linked to what was saying costings for making pv panels its pretty simple raw materials are a world price . labour and home produced power,pollution stds and associated cost and taxation are the things a country can control and therefore the production cost and export price . china are only now starting to do something about pollution ,due to problems it is causing them --they not doing it to save the world we have very expensive labour +taxation in comparison to other countries ,that why we cannot compete with china etc

and properganda to suit the view of some

is this to stop leakage on concrete pour day ,or to replace missing insulation layer. you could always apply a bit of render to fill the gaps? It is one of my possible reasons for not going down poly ICF route ,once i get to that stage - -you can,t really keep doing it in bits and leaving it for months without UV causing surface degradation like you could with velox or durisol I dumped a durisol block in water totally submerged it for a day --then lifted it out and it took about a day to dry out again. that could of course could be a worry if durisol got totally soaked then it froze? expansion of ice I suppose could damage the block possibly ? always compromises

maybe a total load of rubbish ,but when i had mine fitted the installer insisted on adding an extra tank in the UFH system ,cos it did not have enough volume ,or he thought might not have . this is because my antique UFh ,which is KEE triple tube system consists of 3x10mm rubber pipes for each run and he was worried about loss in flow rate due to size of pipes and total volume in system and possibly an in balance between flow and return . I cannot say it was a problem as it all works fine -but maybe the balance between rads upstairs +UFh is causing a similar problem -- do not know just a thought from what my man said on my funny system. suppose you try turning off one half and see if problem goes away ?

yep and i saw the other type which was barrels lifted by cranes. been spending far too much time trolling web for building and energy ideas that may be practical

mainly used where passage of radio waves are important --like radar bunker no downside other than cost I suppose the may use them in areas where they have problem with corrosion as well

I priced it --rang the makers --4times the price of std re-bar

that should be aimed at the man stating he has read peer reviews ,he should have posted links . then the scope of the review could be judged

re bar made from grp is available --just expensive

independant and not "peer " which infers people with a vested interest

I seem to have awakened the green energy trolls . again we will see in20years how many of those turbines are still working and repaired ,once the FITS are no more . turbine pay back in a year !!!!. if it did it would be worn out in 2 years lots of them in scotland,on farms etc no longer working due to cost to repair them . none of them will last as long as a good hydro set-up the ones round here were built in 1937--still going --80years +

are you a politican "Then you've read some bullshit. Peer reviewed articles show that, at least from the CO₂ perspective, PV panels “pay back” (in the sense of displacing emissions) in a small number of years depending on the way they're manufactured and where they're used. For some cases it can be as little as about a year, in others a few years." that statemnt is so open ended it does nothing to convince me that as I stated --(nothing to with emissions --never mentioned co2) --that the energy required to make them -- in KW I do not know the exact costs ,as power in china will be alot cheaper than here as its coal fired - thats why they not made here . without definatvie data you cannot say its bullshit ,well no more than the other side of the argument--where production rates and life span is all guessing --pv has not been going 20 years yet

and if we all become veggy =bean munching greens --how much methane will that emit !!.LOL plenty in our house for sure

"that is the unsustainable and still increasing human population figures." now you got it --the only REAL roblem with the planet is over population solve this one AND everything else works.

any thing that cuts down total energy usage must be good . I read somewhere that the amount of energy used to make a PV panel is more than it will give back inits full life - there are no free lunches . maybe when we get orbital production -when we can take energy direct fron sun outside our atmosphere and manufacture in a vacumn and zero gravity-then things will change maybe

the thing is we do not have to fly . when world government has the balls to tax aviation fuel --then usage of it will change ---same goes for heavy oil used in ships . we do have to build things

I just think the chased electrics will be a real pain and not as simple as they say ,then finding old style plasters that can do a real two coat system, just sticking drywall on the velox is not the same as REAL two coat plaster finish ,will still be air gaps.

I don,t think its any more complex than other systems --just many choices of components --seems to be 3 different wall systems depending on what you want to do and insulation level i will be getting a quote from them and velox once i get my design sorted out ,when planning have agreed to changes --both systems have good points

greys artstone was what i had in mind --got some samples very impressed , checked price again --bit more than i remember --old age but under £20 sqm and you would not tell them from real slate unless you were within 3ft

I put down quickstep 10 years ago - in entrance hall --still there looking great .gets more abrasive foot fall than anywhere else

cheapest std concreter tiles cost under £1 each --10 to the sqm --so you want cheap and wieght on roof not a factor. there are even some recycled plastic /slate mixture tiles at close to same price and they look exactly like slates.but much lighter than concrete tiles. plenty of choices for an economical roof. you just said it in your post about steel roofing "most durable coating" --will still not be as durable as concrete tiles or recycled plastic slate mix units.

I saw a different way which looked far more appealing .uses old mine shafts basically a crane which lifts huge barrels up from bottom of shaft and then puts them on a ledge -this is powered by excess power for wind turbine .etc when they need the power it hooks on the barrel and then drops it back to bottom of shaft ,but this time its generating electric from weight of barrel lowering down . Imagine a big mine shaft full of barrels and cranes --simple way to store energy with without new technology

one thing where d&g council is better then council recycling yard take anything provided you split it up and dump in the correct bin. I see local tradesmen there every time I go, dumping this weeks trash

yes it looks like the best quality blocks i have seen anywhere and far more selection of block types to choose from and I like the 0.5sqm per block .. but at same time i like the velox system for some things -- still away of making any decisions on final design due to local planning etc. and therefore way off getting budgets worked out for 2 systems i,ve spent hours hunting videos on both systems and people building with them . velox definately looks very DIY for russians + other eastern countries s etc out in the middle of nowhere with sod all tools + no heavy equipment-+ one man and his dog building team -which is a big positive in some ways . still not convinced on burying services in the walls on any system -pretty sure i,ll be going for service void and drywall.which could be filled with insulation before drywall if you wanted just seems simpler and more choices to alter spec as you go , I understand you fear the air gap with detract from thermal mass -- is this not more a case of decrimental delay --eg it smooths out speed temp changes? I like the way your builders have done the radiant flooring with the wood for doing final floating . that looks easiest way for self build small team --eg 1 or 2 people to do it if not going for finished polished concrete floor

I would have thought if you are not too stingy with the noggins and board the floor at same time then there is little chance of them getting out of shape