Green Building Bible, Fourth Edition |
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These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment. PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book. |
Vanilla 1.0.3 is a product of Lussumo. More Information: Documentation, Community Support.
Posted By: Mike GeorgeNo Biff, Paul did not answer the question I asked you. Its quite obvious that no matter how many times I ask it, I will not get a straight answer.Mike, with respect, Biff said he agreed with me. Seems like a straight answer to me. I don't know why you're flogging this dead horse - everyone agrees that there is an optimum sized airgap before convection losses overcome the extra insulating effect of the air itself. Just the same as there's an optimum spacing in glazing units, also revealed by thermal modelling and hotbox testing.
Posted By: Paul in MontrealMike, with respect, Biff said he agreed with me. Seems like a straight answer to me. I don't know why you're flogging this dead horse - everyone agrees that there is an optimum sized airgap before convection losses overcome the extra insulating effect of the air itself. Just the same as there's an optimum spacing in glazing units, also revealed by thermal modelling and hotbox testing.
Paul in Montreal.
Posted By: biffvernonthe air-gap recommended for use with multifoils tends to be a bit on the big sizeNo it's not - the air gap you get from following recommendations is less than zero:
Posted By: fostertomthe air gap will unavoidably be 25-30 = -5mm - the (30 thick) MF will be compressed 5mm and in intimate contact with both adjoining surfaces
Posted By: cvhoriethen compared the results against rea
Posted By: cvhorie The saving of space is considerable, even better than Aerogel.
Posted By: cvhorieAs a simple DIYer, this discussion is useful on the level of testing standards. Has anyone done a thorough finite element analysis (or similar) on this material, then compared the results against reality?
Posted By: cvhorie(Actis says Triso insulation is equivalent to 210mm mineral wool)It's one thing to say something, another thing to back it up. I could say I'm a rocket scientist ... but I can't back it up. None of the accreditation bodies will give a certificate that backs up that claim so I'd be wary. Aerogel is at least proven. I'd be especially way of a claim that says 75mm of insulation compressed into 10mm has anything like the same thermal properties of the original material. Why don't they make it 10mm thick in the 1st place?
Posted By: mandsA multifoil isn't particularly insulation at all, it's a reflector!
Posted By: CWatters I guess you just couldn't face reading nearly 800 comments :-)I have avoided this thread because the 800 comments would take a few hours to digest, would somebody mind giving me an overview in a few sentences please?
Posted By: Viking Housewould somebody mind giving me an overview in a few sentences please?No! The rest of us had to suffer reading through all 800 ...
Posted By: JoinerTom is on holiday for (I think) two weeksYes, it was soooo boring, I completely forgot to take Paul's learned papers with me!