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 | Util-A-Crete® and ProTEC™ Concrete Backer Board Installation Guidelines |
Install Util-A-Crete or ProTEC with the rough side out for mortar applications. This will expose the tapered edge so that the seams will be flush once they are taped. Note: Installation guidelines apply to Util-A-Crete and ProTEC. |
Walls and Tub Surrounds
 Step
1
Depending on ceiling height above tub, use
two pieces of 3'x5' Util-A-Crete horizontally for tub backwall,
and one 3'x6' panel vertically at each endwall. To fill in endwalls
and backwalls to ceiling, cut additional boards as needed.
To cut Util-A-Crete, simply mark desired size with a straightedge
and pencil. Score along mark with a carbide- tipped scoring tool
cutting through the mesh, snap the panel like drywall, and cut the
mesh on the back side. Cuts can also be made with a carbide-tipped
circular saw. Edges can be smoothed with a wood rasp. Safety glasses
should be worn when using a circular saw.
Step 2
To make cutouts for fixtures, outline area
with a scoring tool, cut through the mesh on both sides, and punch
out with a hammer from the back side. You can also cut with a carbide
blade sabre or jig saw.
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Step 3
Use a wood rasp to make size adjustments
and to smooth rough edges.
Step 4
Place a 1/4" spacer strip or shim around
lip of tub or shower pan. Attach Util-A-Crete to wood studs (spaced
max. 16" Off Center
(o.c.)) with 1 1/4" or 1 5/8" corrosion-resistant wood
screws, or 1 1/2" hot-dipped galvanized roofing nails spaced
every 8". Attach Util-A-Crete to steel studs (spaced max. 16"
o.c.) with 1 1/4" or 1 5/8" S-12 corrosion-resistant screws
spaced every 8" for walls and every 6" for ceilings. Leave
1/8" to 3/16" space between sheets.
Step 5
Prefill space with tile-setting mortar or
adhesive and immediately apply 2" wide Util-A-Tape over joint
and corners. Embed tape and level joints. |
Floors
Step 1
Apply Util-A-Crete backer board to exterior
grade plywood subfloor
(min. 5/8" thick) that
is nailed or screwed and adhesively attached to joists. Block unsupported
edges or use tongue-and-groove plywood. Laminate with dry thin-set
mortar or a ceramic tile mastic type 1. Apply with 1/4" notched
trowel for dry thin-set mortar or use a 5/32" V-notched trowel
for mastic.
Step 2
Place Util-A-Crete with joints staggered from
subfloor joints. Leaving 1/8" to 3/16" spaces between
boards, fasten them to subfloor with 1 1/4" or 1 5/8"
corrosion-resistant wood screws, 1 1/2" hot-dipped galvanized
roofing nails spaced every 8" or 1/4" x 7/8" galvanized
staples spaced every 4" in both directions.
Step 3
Prefill spaces with tile-setting mortar or
adhesive, then immediately embed Util-A-Tape and level the joints.
Note: For best results in bathrooms, remove lavatory legs, radiators
and heat registers. Then install Util- A-Crete and ceramic tile
over the entire subfloor. |
Countertops
Step 1
Install exterior grade plywood (min.
3/4") across wood cabinet
supports spaced max. 16" o.c. Position ends and edges over
supports. Make sure plywood has slits cut into the panel to prevent
warping. Apply a waterproof membrane over the plywood to further
protect from warping.
Step 2
Fasten Util-A-Crete to membrane using a 1/4"
notched trowel and latex-modified mortar.
Step 3
Fasten underlayment to supports with 1 1/4"
or 1 5/8" corrosion-resistant wood screws or 1 1/2" hot-dipped
galvanized roofing nails spaced every 8" or 1/4" x 7/8"
galvanized staples spaced every 4", in both directions and
around edges.
Step 4
Prefill spaces with latex-modified Portland
cement mortar then immediately embed Util-A-Tape and level the joints.
Note: All
installations must conform to ANSI A.108 and the TCA Handbook for
Ceramic Tile Installation.
Note: All fasteners must be long enough to penetrate
3/4" into wood studs on walls or plywood on floors, or 1/4"
deep into metal wall studs.
Notice: We shall not be liable for incidental and
consequential damages, directly or indirectly sustained, nor for
any loss caused by application of these goods not in accordance
with current printed instructions or for other than the intended
use. Our liability is expressly limited to replacement of defective
goods. Any claims shall be deemed waived unless made in writing
to us within thirty (30) days. |
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Util-A-Crete is recognized by:
CABO NER-419
ICBO SBCCI, BOCA
CITY OF NEW YORK
MEA 293-89-M
UL LISTED
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