On Thu, 16 Sep 2004 13:57:06 +0100, "IMM" wrote:


"Andy Hall" wrote in message

I notice that as usual, you didn't mention any of the disadvantages of
these materials such as the effects of insect and rodent infestation.

On SIPs? Please give examples. It is best you stop making things up.


I never do that.

www.huduser.org/publications/wpd/finalrpt.wp5

"One potential disadvantage is that foam core panels are susceptible
to tunneling by termites, carpenter ants, and rodents that can destroy
the structural integrity of the assembly. This is especially
troublesome because the tunnels are difficult to detect. Where
termites pose a threat, standard preventive measures should be used
such as soil treatment or termite shields. At least one panel
manufacturer has incorporated borate into their expanded polystyrene
core as an insect repellent, but the effectiveness is not
well-documented to date. Apparently other foam materials are not as
receptive to treatment. "


Other integrity problems as well.

http://www.sipweb.com/2001-10_juneau.pdf




Since these things are forming part of the structural integrity of the
house, anything that can potentially cause damage to the core or to
the OSB covering is a major concern.



..andy

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