Proven and trusted by professionals and homeowners alike, QuietDown Max is the original underlay offering maximum sound insulation for floating floors and nail-down applications. Doubles as a durable 100% vapour barrier.
Symar® QuietDown® is a multi-purpose,
high-performance acoustic underlay
engineered from recycled rubber to
reduce sound transmission through
Specially formulated for your flooring
type available for a wide variety of flooring
types such as ceramic tile/stone,
engineered wood, hardwood, laminate,
carpet and vinyl, QuietDown offers
incredible sound-dampening qualities.
Easy-to-install 4’ x 3½’ panels are
Where to use QuietDown
QuietDown is perfect for condos, kitchens,
playrooms, institutional settings, and
anywhere else where noise transmission is
a concern. QuietDown is available in
1/12”, 1/8”, 1/4”, and 3/8” thicknesses to
help achieve the sound transmission
reduction needed for your project.
thinner, lighter, and stronger than
||Weight per Sheet
||42" x 48"
||42" x 48"
||42" x 48"
Tests by the National Research Council
show that QuietDown is effective at
reducing mid- to high-frequency impact
sounds beneath ceramic flooring,
hardwood and laminates. For example,
1/8” QuietDown under hardwood
achieves an FIIC rating of 61. This means
impact sounds such as speech, people
walking in hard-soled shoes or dropped
toys, pots, pans, etc. will be reduced.
Installs in a flash
QuietDown is perfect for do-it-yourselfers.
Laying and trimming
QuietDown is quick and easy.
techniques vary depending on your
flooring type, read the installation
instructions for more info.
Like all Symar products, QuietDown is
engineered from recycled rubber – so
every square foot you install means less
landfill waste. For contractors, this means
it contributes to the ‘green content’ in new
Keeps working for years and years
QuietDown is made of masticated rubber
that is fiber-reinforced and fully cured.
This unique process translates into a
stronger, more resilient acoustic underlay.
Symar QuietDown doesn’t pack down or
fall apart over time – it keeps on
performing year after year.
Investing in new flooring?
Installing QuietDown below your floor is
far more durable and effective as a sound
dampener than foam or fibrous underlay.
The difference is remarkable.
Features and Benefits:
High Performance mid to high
frequency impact sound
reduction Acoustic Underlay
achieving a FIIC 61* under
wood floor systems.
• Doubles as a crack isolation
membrane under ceramic and
• Unlike foams and other rubber
underlays, QD High Bond offers
• QD products contribute to LEED
• Easy to handle sheets versus rolls
make for less waste and lay down
flat with no curled edges.
• QD sounds good, providing a nice
solid feel to the floor.
• superior bonding and anchoring
of adhesives and mortars in glue
down wood and stone/tile
• QD is an extremely durable
100% vapour barrier, is mildew
and insect repellent and will not
rot or fall apart over time.
• QD has low surface deflection
and will not sag or compress
like foams and felt fibre
• QD meets ASTM C627-93
Robinson Test designation for
medium to heavy commercial
applications in tile and stone
•QD’s high coefficient of friction
reduces creeping and movement
of floating wood systems.
• QD's natural physical properties
offer excellent thermal R values
and reduce passive thermal loss.
• QD is a green product, is
engineered and manufactured
from recycled tires thereby
diverting waste from our
• Based on 8" concrete slab and
1/8” QuietDown with no suspended