Specifications - Lord and Son Construction, Inc.

C. Tile Backer Board:
1. Comply with Division 9 Section “Tiling” and TCA Handbook for Ceramic Tile
Installation.
2. Cut boards at penetrations, edges, and other obstructions of work; fit tightly
against abutting construction, unless otherwise indicated.
a. Install boards with a ¼ inch setback where they abut shower receptors to
prevent wicking.
b. Allow no joints greater than 1/8 inch.
3. Do not install an additional vapor barrier in conjunction with tile backer boards.
4. Horizontal Installation: Install sheathing with long edges in contact with edges
of adjacent boards without forcing. Abut ends of boards over centers of stud
flanges, and stagger end joints of adjacent boards not less than one stud
spacing. Screw-attach boards at perimeter and within field of board to each
steel stud.
5. Fastener Spacing:
a. Space fasteners approximately 6 inches o.c. (or tighter spacing if
recommended by manufacturer for specific application) and set back a
minimum of 3/8 inch from edges and ends of boards.
6. Joints and corners shall be treated with 2” fiberglass tape embedded in a skim
coat of the tile setting material as specified in Division 9 Section “Tiling”.
a. Skim coat all fasteners with tile setting material.
7. Where tile backer board is indicated to be painted, finish per “Mold and
Mildew Resistant Gypsum Board” as specified herein.
D. Accessories:
1. Trim:
a. Use same fasteners to anchor trim accessory flanges as required to
fasten gypsum board to supports, unless otherwise recommended by trim
manufacturer.
b. Install metal corner beads at external corners and “reveals” in locations
as indicated on the Drawings or as specified herein.
(1) Install metal casing bead trim whenever edge of gypsum board would
otherwise be exposed or semi-exposed, unless a “reveal” product is
called for on Drawings.
MAHG121038 09 29 00 - 6 GYPSUM BOARD