Installation Instructions

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CRI 105 - STANDARD For INSTALLATION of RESIDENTIAL CARPET Copyright © 2019 by The Carpet and Rug Institute, Inc.
Definition of Terms
Term
Definition
pH
A value representing the concentration of hydrogen ions in gram
equivalents per liter used to indicate the acidity or alkalinity (base) of a
substance on a scale from 0 to 14 with 7 representing neutrality,
numbers less than 7 increasing acidity, and numbers greater than 7
increasing alkalinity. [Use distilled water for laboratory and field testing
for pH.]
Plasticizer
A substance incorporated into polyvinyl chloride polymer or other
polymers to increase flexibility and workability.
Power stretcher
A carpet tool used to stretch carpet. Consists of a pinned plate or
cotton head that grips the carpet, tubular extensions, a padded end
used to brace against an opposing wall or other structure (dead man),
and a lever system that multiplies the installer’s applied stretching force.
Primer
A preparatory coating placed on a substrate or material to promote
adhesion and neutralize pH.
Riser
The upright part of a step between two stair treads.
Sealer
A product used to reduce the porosity of the substrate.
Seam
The joints or interface of two pieces of carpet by the use of various
securing techniques.
Seam adhesive
A specifically formulated adhesive for securing and protecting cut edges
of carpet to be seamed.
Seaming
Devices
Tools designed to melt seaming tape.
Seam peaking
The slight elevation of the taped seams which is a (usually renders the
seam more visible) result from power stretching of the carpet. For
additional information, refer to CRI Technical Bulletin “Peaking Seams in
Stretch-In Carpet Installations”.
Seam
sealing/Edge
sealing
Common term used to describe the application of seam adhesive to
secure and protect cut edges of carpet to be seamed from edge raveling
and delamination.
Seaming tape
Tape used for joining two sections of carpet. [“Hot melt” tape is pre-
coated with a thermoplastic adhesive. Adhesives may be applied
separately to other types of seaming tapes.]
Secondary
backing
Woven or non-woven fabric reinforcement laminated to the back of
tufted carpet, usually with an adhesive, to enhance dimensional stability,