specs

Section 09310
Page 3
4. Method #4 (for exterior wall tile on cementitious backer units):
a. Installation shall meet requirements of TCA #W244.
b. Substrate shall be interior or exterior cementitious backer units..
c. Install latex Portland cement mortar bond coat (refer to method #1).
d. Set tile (refer to method #1).
e. Install latex Portland cement grout as described below.
5. Method #5 (for floor quarry tile):
a. Installation shall meet requirements of TCA #F113.
b. Substrate shall be concrete subfloor.
c. Install recommended mortar.
d. Metro Tread tiles must be installed in a grid-checkerboard pattern to achieve the stated coefficient of
friction.
e. Set tile, taking care to maintain a full mortar bed beneath entire tile body. Allow mortar bed to cure
completely before grouting.
C. Grouting: In accordance with ANSI standards.
1. Force maximum grout into joints; tool joints before grout sets.
2. Fill gaps and skips so that finished joint is uniform in color, smooth and without voids, pin holes, or low
spots.
3. Sponge and wash tile thoroughly, diagonally across joints and finally polish with clean, dry cloths.
D. Expansion control:
1. Interior: 1/4" every 24 to 36 feet or as shown on drawings. Joints shall align with concrete slab control
joints.
2. Provide a crack isolation membrane to cover existing cracks and sawcut control joints where the direction
of the tile joints do not align with direction of substrate joints.
3. Exterior: 3/8" to 1/2" every 12 to 16 feet or where abutting dissimilar material.
4. Recess joint into substrate by sawcutting. Fill with backer rod and sealant
E. Use the Schluter Rondec-Pro with wall tile that does not have trim pieces.
3.03 CURING
A. Damp cure grouts a minimum of 72 hours after grouting. Maintain minimum 40º temperature.
B. Close areas to traffic until tile is firmly set. Provide adequate barricades.
3.04 CLEAN-UP AND PROTECTION
A. Refer to Section 01710 - Cleaning.
B. Remove grout and foreign matter from tile and leave in a polished condition.
C. The protection of the finished work is made a part of this Section and material damaged shall become the
responsibility of the Contractor and shall be replaced with new matching material.
D. Replace ceramic tiles with broken corners, cracks, fractures, and minor breaks with materials to match the
original installation.
3.05 EXTRA STOCK
A. Provide ten percent (10%) additional ceramic and marble tile material, of each type, identical to that installed
for maintenance and replacement uses.
END OF SECTION
NAPA CENTURY CENTER XD 12
#165582