The other problem is that, IF something is installed, it must be installed in accordance with the requirements of the code and the manufacturer's installation instructions.

One cannot (OK, it is proven to us daily that one 'can' do things which are not allowed) ... one must not, is not allowed to, just willy nilly install whatever they want in any manner they want.

If 'not required by code', there are but two choices:

1) DO NOT INSTALL IT.

2) INSTALL IT PROPERLY.

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Jerry Peck, Construction / Litigation Consultant
Construction Litigation Consultants, LLC ( www.ConstructionLitigationConsultants.com )