Ecohouse 2 by Sue Roaf
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Posted By: neilgorswiftHas anyone used 140/150mm blockwork (in conjunction with a smart engineer) with external wall insulation say neopor EPS to get a passive house wall construction of minimal thickness? If so what block did you use. I don't like aircrete type blocks especially as i am looking to plaster the inside for airtightness. What is the best lambada value for a block that receives wet plaster well without cracking? Its a balance! your views would be welcome.
Posted By: neilgorswiftWillieI have - both durisol and trad icfI some how think block with EWI and thermal mass on the inside will be the cheapest?
Posted By: jamesingramMy view would be you're getting more for your money with EWI/solid block in all the areas you mention.Though I do have concern regarding longevity of thin coat EWI relative to the trad. brick or dash render block external finish and how this might effect the energy input/output over life span of building , if it required renewing say after 25 years
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