Ecohouse 2 by Sue Roaf
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Posted By: JontiMight as well use loft roll insulation in the walls and make sure the internal and external barriers are good
Posted By: fostertomPosted By: JontiMight as well use loft roll insulation in the walls and make sure the internal and external barriers are goodThat won't do it - even with those barriers the gaps will disproportionately degrade the performance by creating quite energetic convection-driven air currents direct from warm side to cold side within the airtight cavity. There's no substitute for eliminating such air gaps.
Posted By: SteamyTeaJontiThe land price issue is rather secondary to the build cost. The only way if effects the build cost is if thicker walls are used (reducing internal space or requiring more land). An economist may well argue correctly that if all building plots are sold then they were too cheap, an accountant won't though.Totally agree with 6 though, totally barmy that each architect and builder re-invents the wheel every time they build something. My first post was about this, but it got bogged down in the wrong details.Having started my working life in a boat yard it still amazes me that we make leaky housing and use outdated (traditional) materials that are often inappropriate for the application.
Posted By: Jontiit is a hell of a lot cheaper than the advised alternative which shrinks
Posted By: fostertomPosted By: Jontiit is a hell of a lot cheaper than the advised alternative which shrinksA gd alternative is blown-in cellulose fibre (newsprint!) - Warmcel. It blows into every crevice, which neither boards nor quilt will, and it's under slight compression, so it stays tight to its surroundings. It's water vapour breatheable but fairly airtight, it's hygroscopic and it sequesters carbon unoxidised. Good stuff. Icynene is quite different but has comparable properties once installed.
Posted By: JontiSteamyTea,In some areas the plot can be over half the total costs. It seems crazy to me that it might cost £100K for the plot and then only £75K for the build especially if the land is only worth a fraction of this farmland.Jonti
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