Norman Davison says
thank you for your most perceptive question .
Yes I have built 3 small pilot buildings (gratis) to date each time testing a differnt eco material.
The first was an extension to my own garage using timberframe and 25mm thick panel of my 'p-crete formula this was actually a castable .
this was 7 years ago. when I first started getting interested in structural insulated panels. to date there has been no deterioration.
the second building was a workshop for my brother in law, the panels used were again timber frame lime-/ cement polystyrene mix, castable
this was 5 years ago .
to date there has been no signs of cracking spalling or delamination, and strangely has no signs of moss.
My last building was an aviary, part closed build ing part open . This was for my next door neighbours design using one of my latest SIPs and latest coatings. Backplane was plywood, insulation substrate was low density polystyrene. and the coating was2.5 mm thick ,using fiber-glass mesh reinforced. polymer modified cement , and application was by my latest version of the sandjet material coating machine . this was last September.
To dated there have been no surface problems .
Later this year I will do a full scale extension to my Finca in Alcoy Spain in order to validate my latest SIP U-2001 A and 2001B . these use similar technology but are reinforced every 18" using steel chanel . I cant say too much about this one other than the panel dimension of the A is 8 'by 6'6 and weighs an incredible 25 kg.. the panel is currently bing Nascopied by my lawyer .
What time frame does it take to erect a high tensile SIP building, including assembly of the prefabricated base p-base 1801 , 1 day . internal finishing is another mater I am a bit slow on that aspect .
Hope that aswers your question .
If you have more detailed techncal questions, which are not proprietory please contact me privately at nwdavison@hotmail.com.
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