Support Materials for Floor Insulation.

Support Materials for Floor Insulation. In general, support materials shall be rot-proof, rust-proof, stretch-free and strong enough not to break when affixed to the underfloor structure. • When netting and staples are used as support, netting shall be knotted, looped, woven, or heat fused at all junctions; staples shall be the type commonly used to support insulation batts.  • Wire staves shall be made of a single piece of 13-gage (0.087 inch diameter) or larger “hard drawn” steel wire, pointed at both ends. Staves shall be manufactured especially for the purpose of supporting underfloor batt or blanket insulation.
Section 2C   01/16/2007
 16
• Staves shall be of good quality steel with sufficient spring to return to their original shape with little or no deformation when released.  • Wire staves shall have a length between 1/2 inch to 2 inches longer than the inside joist spacing on which the staves are used.  • When the wire staves are cut to a shorter length to fit smaller joist spacings, the cut shall be on a diagonal in such a way to produce a barb that will more easily secure the wire stave into the joist.  • Wire, nylon string, or other equivalent permanent materials of sufficient strength shall be used to support the insulation material.  • Nails with small heads, such as brads or casing and finishing nails shall not be used.
Installation Requirements. The QCN member for each weatherization item covered under Floor Insulation shall be responsible for ensuring that all materials used and work done comply with the installation procedures and criteria outlined in these standards. • Preparation Work—Work identified as preparation work shall be completed prior to, or in conjunction with, installing floor insulation.