USE:
Mer-Krete
Sound Shield 7000 is most commonly used as a sound reducing
barrier between concrete or plywood sub-floors and hard
surface overlayments such as tile, stone and hardwood
flooring. IIC ratings range from 53 to 63 depending
on floor system.
ADVANTAGES:
-
Easy to handle sheets eliminates curled edges.
-
Engineered surfaces provide enhanced bonding.
-
Adheres to all common sound substrates.
-
Made from recycled materials reducing landfill usage
(meets LEED requirements).
-
Reduces both airborne and impact sound transference.
-
Helps reduce overlay cracks due to sub-floor movement
(ANSI A118.12).
-
Meets ASTM E1007 requirements.
RECOMMENDATIONS:
No sealers, curing compounds or coatings shall be used on
the substrate. Surfaces shall be left clean. Any contaminants
shall be removed prior to application. Patching, leveling
or areas requiring a mortar bed should be prepared using
Mer-Krete Underlayments.
SPECIAL
NOTE:
Mer-Krete Thin-Set
801 is a new proprietary hybrid formulation developed for
use in installations of non-porous tiles over sound mats,
waterproof and crack isolation membranes as well as any
other non-absorptive surfaces. Unlike regular thin-sets,
all the water is hydrated within the Thin-Set 801 system
rather than requiring evaporation. When installed with Sound
Shield 7000 and porcelain or other non-porous overlays,
Thin-Set 801 is warranted to completely cure in 48 hours.
INSTALLATION:
Work should
be performed only by a trained applicator and in strict
accordance with ANSI A-108.5 methods and manufacturer application
specifications, abbreviated below: Mix Mer-Krete 801 thin
set with approximately 1 gal to 1 1/4 gal of cool clear
water per 50# bag to a smooth paste like consistency. Use
a 1/4" notched trowel and spread only the amount that
can be covered in 15 minutes. If material skims over on
the floor, re-trowel as long as material remains tacky,
if dried out, remove from floor and discard. When spreading
thin set, comb in one direction. Place one edge of Sound
Shield mat on the floor and roll down into the thin set
(roll perpendicular to the troweled ridges of the thin set).
Leave a 1/4" gap around room or any protrusions and
fill with an acoustical caulking material. Move the mat
back and forth perpendicular to the thin set ridges. A 75
lb. roller is recommended to help flatten out the mat. If
any thin set extends out between the edges of the mat, either
scrape off the excess or take the flat edge of a trowel
and strike the thin set flat with the mat.
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