Georgia-Pacific APA Engineered Wood Construction Guide - Floors - Manual (Page 14)

Floor Construction
ENGINEERED WOOD CONSTRUCTION GUIDE ■ FORM NO. E30V ■ © 2011 APA – THE ENGINEERED WOOD ASSOCIATION ■ WWW.APAWOOD.ORG 41
TABLE 15
APA FLOOR SYSTEMS FOR CERAMIC TILE FLOORING
BASED ON THE
TILE COUNCIL OF NORTH AMERICA HANDBOOK FOR CERAMIC TILE INSTALLATION
TCNA
No.
Service
Classification (a)(b)
Max. Joist
Spacing
(in. o.c.)
Tile
Adhesive
Underlayment
Layer
Subfloor
Layer Comment
F141
Light
Commercial
16
Portland cement
paste, dry-set
mortar or latex-
portland cement
mortar
Mortar bed
(1-1/4" minimum)
19/32" Exposure 1
T&G plywood
Cleavage
membrane
F142 Residential 16 Organic
19/32" Exposure 1
plywood
19/32" Exposure 1
T&G plywood
—
F143
Residential
or Light
Commercial or
(with special tile),
Heavy
16 Epoxy
19/32" Exposure 1
plywood
19/32" Exposure 1
T&G plywood
15/32" plywood
underlayment
layer gives
“Residential”
performance
F144
Residential
or Light
Commercial
16
Dry-set mortar
or latex-portland
cement mortar
Cementitious
backer units or
fiber cement
underlayment
23/32" Exposure 1
T&G plywood
19/32" plywood
subfloor gives
“Residential”
performance
F145
Residential
or Light
Commercial
16
Portland cement
paste, dry-set
mortar or latex-
portland cement
mortar
3/4" Minimum
mortar bed
23/32" Exposure 1
plywood
Cleavage
membrane +
metal lath
F146
Light
Commercial
16
Dry-set mortar
or latex-portland
cement mortar
Coated glass-mat
backer board
19/32" Exposure 1
plywood
2" x 2" or larger
tile only
F147 Residential 24 (c)
Latex-portland
cement mortar or
dry-set mortar
3/8" Exposure 1
plywood plus
uncoupling
membrane
23/32" Exposure 1
T&G plywood
4" x 4" or larger
tile only
F148 Residential 19.2
Latex-portland
cement mortar or
dry-set mortar
Uncoupling
membrane
23/32" Exposure 1
T&G plywood
—
F149 Residential 24
Latex-portland
cement mortar
19/32" Exposure 1
plywood
23/32" Exposure 1
T&G plywood
—
F150
Residential
or Light
Commercial
16
Latex-portland
cement mortar
19/32" Exposure 1
plywood
19/32" Exposure 1
plywood
15/32" plywood
underlayment
layer gives
“Residential”
performance
F151 Residential 24
Dry-set mortar
or latex-portland
cement mortar
Coated glass mat
backer board
7/8" Exposure 1
T&G plywood
8" x 8" or larger
tile only
F152 Residential 24 (c)
Latex-portland
cement mortar
3/8" Exposure 1
plywood
23/32" Exposure 1
T&G plywood
4" x 4" or larger
tile only
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