FAQ

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CRI 105 - STANDARD For INSTALLATION of RESIDENTIAL CARPET Copyright © 2015 by The Carpet and Rug Institute, Inc.
Table II – Trowel Size Minimum Guidelines
Table II – Trowel Size Minimum Guidelines
Floor Covering /
Substrate
Applicator Size
Approx. Spread
Rate feet² / gal.
Approx. Spread
Rate yards² / gal.
Broadloom Carpet:
rough back, woven,
double stick carpet
to cushion
1/8” x 1/8” x 1/8” U
or Square notch
(3.2mm x 3.2mm x
3.2mm)
50 – 90
6 – 10
1/8” x 1/8” x 1/16” U
notch
(3.2mm x 3.2mm x
1.6mm)
45 – 75
5 – 8
Broadloom Carpet:
Action Bac®, unitary
back, jute
1/8” x 1/8” x 1/8” V
notch
(3.2mm x 3.2mm x
3.2mm)
90 – 110
10 – 12
1/8” x 1/8” x 1/16” V
notch
(3.2mm x 3.2mm x
1.6mm)
70 – 90
8 – 10
Broadloom Carpet:
smooth back,
attached cushion,
needle punched,
cove base
3/32” x 3/32” x 3/32”
V notch
(2.4mm x 2.4mm x
2.4mm)
90 – 135
10 – 15
Vinyl back
broadloom carpet,
carpet pad to floor
double stick, cork
tile and underlay
1/16” x 1/16” x 1/16”
Sq. notch
(1.6mm x 1.6mm x
1.6mm)
160 – 180
18 – 20
Vinyl back
broadloom carpet,
carpet pad to floor
double stick, cork
tile and underlay
1/16” x 1/16” x 1/16”
U notch
(1.6mm x 1.6mm x
1.6mm)
160 – 180
18 – 20