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We had new carpet placed in our living room a year ago. The house is on concrete slab. A seam in the carpet started to come apart in January. The carpet has been inspected and the report had no seam sealer per UV black light testing. The report talked about pin-elongation and CRI 5 in the living room but CRI 3.5-4 at the seam.
What does it mean pin-elongation? and What is CRI?
Annette on 04-19-2017 11:35 PM


Mike Burgener
850 Group, LLC
Crestview , Florida
CRI is the acronym for The Carpet and Rug Institute. The document referred to as CRI is actually CRI 105. The document is the Standard for the Installation of Textile Floor Coverings Residential. It can be viewed at

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