Bancroft
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After this years extreme heat...
Bancroft commented on MikeGrahamT21's blog entry in Back on the self-build waggon...
That's a bummer about SolarShield as I was looking at heir product too. Am I right in thinking this was/is an Australian product? Are other similar Australian products available? -
Congratulations. But to quote Winston Churchill - "This is not the end. This is not even the beginning of the end. This is just the end of the beginning"! We had a lot of delays with our planning and - because of some changes - has to put in a Section 7 to the original which also added time. However, I also found part of the planning documentation which says that, if they take more than 16 weeks to deal with it, you can get your planning money back. I did this with the second application, got the money back and - coincidentally - they approved it the next day too... Planning offices are understaffed by people with little autonomy or experience to make decisions. The best thing anyone can do is to stay on their back. Become the squeaky wheel that they want to oil first. Not how it should be, just reality.
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Doesn't really help you make a decision one way or another but I'm expecting to use a combination of chased runs and some battened areas. My thoughts: Chased runs should make the build quicker, and will reduce the materials/labour that would be needed if all walls were battened and then plaster boarded. Granted, some of that cost might still be needed for conduits as @Nickfromwales pointed out but overall there should still be a saving. I don't think the reduced insulation in areas where the chased cables are mounted will be sufficiently great as to impact the EPC/thermal value of the envelope. Not battening all walls religiously gives more space internally. 100mm/4" isn't much but it's a lot to some...😳 Having said that, I'm keeping my mind open to whether some areas might benefit from having battens behind the plaster board. For example if there are a lot of ethernet cables coming down a wall into a server/switch area; perhaps even where UFH pipes are emerging into a manifold. Remain flexible.
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Very Wet weather coming.
Bancroft replied to saveasteading's topic in General Self Build & DIY Discussion
...which is why I've been on the back of our builder to get the roof on. But, here we are, two months later, with no roof...🤬🤬🤬 -
New self build design, heat and architect
Bancroft replied to Jack757's topic in New House & Self Build Design
Two thoughts: 1. If designing from scratch the additional cost of adding cooling will be minimal in the overall scheme of things so put it in at the start. 2. Why on earth would anyone building a new house in 2026 NOT want to add cooling? -
Jeremy Clarkson seemed to have some success with geofencing them. And I think he rented them from someone who actually hires them out so a business opportunity there too.
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Waste water capture and re-use
Bancroft replied to stephanh's topic in Environmental Building Politics
The drought has also had me thinking about this and I've been playing around with a pump and diverted shower water. Setup - cheap submersible pump, a long length of hose, and an large old plastic dustbin at the bottom of the garden, next to the greenhouse. I diverted the shower water outlet to a holding tank where the shower drain exits the house, put the pump in there and attached the hosepipe. Simples. Results/comments I thought showers were good for using less water but was surprised at how much still gets dumped each time. I know a shower uses less water than having a bath but it still seems a lot. Two showers and the old plastic dustbin is full. Even using natural shampoos/soaps the soapiness of the water seems strong and there's a lot of scum. Makes me unsure about putting it on the lawn/shrubs - never mind anywhere near vegetables (which apparently you can do with some caveats/caution). This seems like a huge waste of water with few secondary uses unless put through some sort of filter/centrifuge system to clear out teh gunk. We will be setting up a proper rainwater recovery system on our outbuilding using some IBCs, but this was an interesting experiment to keep me occupied for a few days. Also got me thinking about rainwater recovery being the wet equivalent of solar power - the time you really need it is when there isn't much around! -
Any idea why roof tile battens were used as opposed to 'normal' battens? Also, is that Jackon ICF - looks very similar to ours? If so, any top tips on securing to it internally or externally?
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How do more options make something into an 'issue'? Every build system has pros and cons but, after a lot of research, we decided ICF fitted our use-case best. I think the reason ICF hasn't been adopted by housebuilders is probably because that's not the way they did it in the past... Plus, at the moment, there are probably more brickies than there are construction workers who can spell ICF.
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We're using Jackon - or BEWI as I think it's now known. Just done a quick check and it looks like it's metric. Each strengthening plate is 10mm from the surface, 50mm wide, 100mm gap, then another 50mm plate etc.
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Like the idea of the osb across the top as a base for the wiring to route out of the room. If I do go for option 3 i have an intention to use osb/plywood backing in areas where heavy stuff will be secured to walls (eg tv, kitchen cupboards etc) And if using battens I'm planning to use 20mm as standard (reduced space loss and £££) and only go to 50mm if necessary for pipework or to encompass additional strengthening
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What's the best way to secure plasterboard to ICF internal walls? Option 1 - I've seen some people talk about screwing it directly to the strengthening plates in the ICF. Seems like a quick and logical solution but I presume it means having to chase conduits into the ICF to allow for electrical/plumbing runs? Not a major issue, especially with one of those heated wire tools and the cables probably need to be sheathed in plastic/metal protection. Is there an issue regarding a lack of ventilation between the plasterboard and the polystyrene? Option 2 - dot and dab. Well-known/popular way to fix plasterboard but how well does it stick to the ICF polystyrene? Also seems a bit old fashioned for a modern method of building. Option 3 - 20mm battens affixed to the ICF strengthening plates and plasterboard affixed to the battens. Leaves a space behind for cables without cutting into the polystyrene but reduces room size (marginal and also happens with dot/dab) and adds cost for battens. I'm tempted to go for option 1 or 3 but would like to hear from others about what they've done and any other pros/cons people can think of.
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And the quote from Jean-Paul Junkers - "Every politician knows what they should do. What they don't know is how to get elected again afterwards".
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Much of this is due to electric taking the majority of the tax burden - away from gas. It always strikes me as odd that successive governments want better energy security (including not importing gas) but continue to hit electrical supply with the burden of taxation in order to make gas cheaper. And then spend millions on offsetting wind farms for not dumping electricity on to the grid! I presume they don't want to lose votes from people who still have gas boilers... But, if they switched the subsidies/taxes around that would be a prime reason for people to start moving to electricity over a relatively short period of time as they got stung by higher gas prices.
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Is the JACKODUR Atlas Foundation System a similar set up? We haven't used it ourselves but our ICF builder has used it and seemed happy with it.
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After putting the 300mm thick concrete slab down we started building up the ICF walls - only for me to note that a SVP was in the wrong place. It comes up about 500mm out of position and half way across an internal doorway... Neither the surveyor or builder have any idea how it happened but it did. Builder and SE are now scratching their heads to see how best to resolve the issue but I thought it might be worth getting some opinions from the experts here. It clearly needs to be moved but I'm wondering what will the best way to do it while still maintaining structural integrity of the slab and insulation? To me, there look to be 2 options: Option 1. There will be 150mm of insulation on top of the slab so the pipe might be able to be hidden within that. But, to contain the pipe within it, it would need a right angle bend and would result in loss of insulation around the pipe run. Option 2. Cutting back into the slab would mean cutting out quite a large area of concrete/rebar and through the DPM to add an additional piece of pipework to come up in the correct position, then resealing the DPM, and adding rebar and fresh concrete back into the hole. Would the loss of insulation around the pipe in option 1 be an issue once screed has gone down and UFH installed? This particular SVP serves the utility room so will only have basin/washing machine waste running through it so should be able to deal with the 90 degree elbow? Would option 2 penetrating the DMP be a point of future weakness, or would a good amount of mastic taping and sealing be sufficient to ward off problems? My feeling is we should fix this properly (option 2) but I can't help thinking that might be creating more problems for the future. Really not bothered about how much work it will be for the builder - it will give him time to reflect on the error of his ways while he sorts it out and (hopefully) won't do it again the future.
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Would suspect the product is the difficult basket from the reviewers perspective, i.e. no idea what they are looking at. I suspect this is the key problem as the way they're dealing with it is a real 'computer says no' type response - they can't answer intelligently because they don't know what they're talking about themselves. They have emails from the SE saying that their design has taken into account the full geotech survey and been developed in accordance with NHBC guidelines for the soil types. They have the geotech report itself, They have the architect's drawings. What they don't have is an ounce of common sense.
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Yes, that's what we're going on, along with the inputs from SE for drainage runs etc. We've got all the ICF manufacturer info (and have sent it to them) but that's just guidance for how to assemble/use the ICF and isn't a manufacturer's plan. Bloody frustrating.
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We took out Protek insurance in January before starting the build. Their rep came and did his first planned visit in early June when we had all the rebar caging done just before the slab pour. No issues highlighted by him when talking to him on site but a few weeks later we've had some clarification requirements arise that need resolving. The first is that they want us to provide a '...manufacturer's design layout...' from the ICF provider. Speaking with the architect, structural engineer, and builder (who is an ICF specialist) none of them have any idea what this is supposed to be. Has anyone come across this before and, if so, how did you respond? The second issue is six months into the project they now insist on a site survey (now that the slab is down and the remaining garden looked like a re-enactment of the Somme). Protek didn't ask for this at the start, the Planners didn't ask for one, the structural engineer didn't ask for one (they were happy with the geotechnical report we provided), and Building Control didn't ask for one. I've asked for exactly what it is that they want but Protek say they can't answer my question because a) they don't provide any advice or guidance, and b) they're just passing on what the Auditor has asked for and have no additional information - but won't give me the Auditor's details. I'm loathed to go out and randomly commission another report only to find it isn't what they want. Anyone had experience of similar with Protek (or other insurers)?
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Keter? I was talking about Paulk workbenches - Can make them pretty much any size you like. Agree with you about the number of holes versus number used. But, on that odd occasion they do come in handy.
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You can actually buy work surfaces already drilled for 20mm dogs - I bought one as a spare for my Festool worktop. Relatively cheap and you can then add whatever legs you want. Alternatively, if you want to really up your game do a Google search for Paulk workbenches. You can get plans for them and make them as big/small/portable as you need.
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chatGPT and the like for landscape inspiration
Bancroft replied to Post and beam's topic in Boffin's Corner
Well, they don't care about copyright laws either so at least they're consistent! -
Valuing/re-valuing your new build for Council Tax purposes
Bancroft replied to Bancroft's topic in Housing Politics
Bizarrely, new houses are valued by calculating what they would have sold for on 1 April 1991 and then put into the appropriate band. That's because there has been no overall re-valuation process since that date. This is one of the issues with a property tax of this sort - any gains in property value are unrealised until you sell but, in the meantime, your taxes keep going up. And if anyone things the government will ever down-value properties you're living on the wrong planet! -
Valuing/re-valuing your new build for Council Tax purposes
Bancroft replied to Bancroft's topic in Housing Politics
Whatever happens, I think his comments have opened up the issue of how people pay for property. Homes in the UK haven't been re-valued sine 1991 and the top band is houses worth £320k and over. That wouldn't buy you much anywhere now. The two main options seem to be: Re-value everything and continue to use the existing system - perhaps increase the bands above Band H (eg, I, J, K...etc) to deal with the increased values, or Move to a Burnham style system. Both have their pros and cons. Sensibly, we should have kept re-valuing on a regular basis (some EU countries revalue annually, others every 2-3 years). That would be logical, might have kept a lid on soaring house prices, and would avoid the cliff-edge we might be facing soon. The danger of Burnham's system is the average property will probably double in 'value' overnight as it is revalued to 2026 from 1991, but the 0.48% will still be in play. Yes, your property goes up in value but it is an unrealised gain because you only realise the gain when you sell. So, someone paying, say £1500/year for a house they bought under the old council tax system could suddenly find themselves facing a property tax bill of £3000-£4000. How is that going to benefit the economy? And what happens when they can't pay? take their house off them? Put a lien on the property? Laws of unintended consequences... -
All this Burnham talk about a 0.48% property tax has got me thinking about how much we're going to end up paying in council tax (or property tax...) at the end of the process. At the moment we live in what can only be described as a slightly posh shed (it has plasterboard on the inside - mainly - but doesn't have heating or insulation) so our council tax is minimal. Once the new house - on the same plot - is finished, we will be knocking the shed down and will move to the new one. And I expect the council will want their pound of flesh. What are other people's experiences of the council valuing their new house/replacement house? How have they gone about creating a value for it? Did the process seem logical or was it as obscure, overly bureaucratic, and nonsensical as the planning process that started the whole affair?
