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Viking
Gypsum Floors is proud to offer customers the LEVELROCK®
Brand Floor Underlayment that delivers exceptional compressive strength,
sound control and fire-resistance properties. We provide the technical
expertise and application experience to assure superior-quality results
on every LEVELROCK underlayment project... for every LEVELROCK customer..
That means no flaking, no dusting, no chipping and no cracking. LEVELROCK
Brand underlayments provide exceptionally durable, acoustically superior
floors that consistently deliver best-in-class performance.
A
New LEVEL of Performance
The poured gypsum underlayment industry has changed dramatically over
the past two years. Product strengths have increased. Product performance
has been enhanced. And product quality has been significantly improved.
As a result, gypsum underlayments are now being used in more buildings
and in more ways than ever before.
QUESTION:
What makes LEVELROCK Brand floor underlayment superior to other pour gypsum
floor underlayments?
ANSWER: LEVELROCK floor underlayment's
unique formulation requires significantly less water than other poured
floor underlayments, thus allowing LEVELROCK products to achieve the industry's
highest compressive strengths and surface strengths.
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| LEVELROCK
Brand Floor Underlayment 2500 |
Poured as a fire and sound
barrier on wood frame structures, this product is the 
most economical, highest compressive strength (up to 3200 psi) underlayment
product available for multifamily construction. Also available in Pre-Sanded.
Key Benefits
U.S. Gypsum poured floor underlayment systems provide an economical way
to achieve lightweight, fire-resistant, sound-rated, leveling floors in
residential and light commercial construction. Typical applications are
less labor intensive than many other types of construction and provide
high fire ratings typical of gypsum systems. Designed sound systems provide
for improved STC and IIC ratings when used with acoustical mat. |
Physical Properties
Nominal Compressive Strength (aggregated) ASTM C472 2500-3500 psi
Density (aggregated) 115 lb./cu.ft.
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| LEVELROCK
Brand Floor Underlayment 3500 |
Ideal for residential and
commercial applications with compressive strengths from 3500-4500 psi.
In residential projects, this product can be used as an upgrade in hard
surface areas or as a topping to correct uneven floors in commercial
applications. For higher traffic areas, it meets vinyl floor covering
industry standards for non-Portland Cement underlayments. Also available
in Pre-Sanded.
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Key Benefits
U.S. Gypsum poured floor underlayment systems provide an economical
way to achieve lightweight, fire-resistant, sound-rated, leveling floors
in renovation and light commercial construction. Typical applications
are less labor intensive than many other types of construction and provide
high fire ratings typical of gypsum systems. Higher compressive strengths
minimize floor damage from trades.
Designed sound systems provide for improved STC and IIC ratings when
used with acoustical mat.
Physical Properties
Nominal Compressive Strength (aggregated) ASTM C472 3500-4000 psi
Density (aggregated) 120 lb./cu.ft.
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| LEVELROCK
Brand Floor Underlayment 4500 |
One of the highest compressive
strength (up to 5500 psi) gypsum floor underlayments on the market today.
This product is ideal for floor corrections over concrete substrates.
It can be applied at variable thickness up to 3 inches, making it ideal
for heavy-traffic commercial, institutional, and renovation projects.
Also available in Pre-Sanded.
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Key Benefits
U.S. Gypsum poured floor underlayment systems provide an
economical way to achieve lightweight, fire-resistant, sound-rated,
self-leveling floors in residential and light commercial construction.
Typical applications are less labor intensive than many other types
of construction and provide high fire ratings typical of gypsum systems.
Higher compressive strengths minimize floor damage from trades.
Designed sound systems provide for improved STC and IIC ratings when
used with acoustical mat.
Physical Properties
Nominal Compressive Strength (aggregated) ASTM C472 4500-5500 psi
Density (aggregated) 125 lb./cu.ft.
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| LEVELROCK
Brand Floor Underlayment RH (Radiant Heat) |
LEVELROCK Brand Floor Underlayment
RH (Radiant Heat) is  specifically
formulated for electrical and hot water radiant heat floor installations.
The non-shrinking nature of LEVELROCK Brand Floor Underlayment RH locks
tubing in place, preventing noise and tubing chafing, and its special
formulation prevents the high temperature associated with radiant heat
floors from breaking down the floor matrix. Also available in Pre-Sanded.
Key Benefits
U.S. Gypsum poured
floor underlayment systems provide an economical way to achieve lightweight,
fire-resistant, sound-rated, leveling floors in residential and light
commercial construction. Typical applications are less labor intensive
than many other types of construction and provide high fire ratings
typical of gypsum systems. Higher compressive strengths minimize floor
damage from trades.
Physical Properties
Nominal Compressive Strength (aggregated) ASTM C472 2500-3200 psi
Density (aggregated) 115 lb./cu.ft.
Limitations
USG poured gypsum floor underlayment systems should not:
- Be used as a wearing surface.
- Be installed where continuous
exposure to moisture is a possibility (for instance, exterior balconies
or shower rooms).
- Not recommended for radiant
heat systems with prolonged operation temperatures exceeding 150°F.
- Be installed in below-grade
applications.
Installation
During the entire installation process, the building must be enclosed
and temperature maintained at 50°F minimum until permanent heating
is available. Adequate ventilation must be provided to ensure uniform
drying of the installed gypsum floor underlayment, which typically occurs
within 10-14 days at 1-1/2 inch thickness. Limit design of the subfloor
and framing to a minimum of L/360 to prevent undue stress from occurring
in the floor fill material, as this stress may produce cracks. Over
plywood subfloors, tongue-and-groove edge supported type plywood is
recommended for meeting this deflection criterion. The application of
LEVELROCK Brand Primer to the subfloor is necessary to provide maximum
bond between the underlayment and subfloor. Concrete slabs that are
receiving gypsum underlayment systems must be properly cured (generally
for a minimum of 28 days) prior to the underlayment installation. Concrete
slabs should be properly treated with LEVELROCK Brand Primer according
to manufacturer's recommendations.
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| LEVELROCK
Brand Floor Underlayment PROFLOW |
LEVELROCK Brand Floor Underlayment
PROFLOW is the highest strength gypsum 
concrete underlayment in the industry. Designed for use in commercial,
institutional and rehab construction, this self-leveling product applies
from feather-edge to 1-inch thick over concrete slabs, pre-stressed
concrete and concrete planks. It accepts a variety of floor coverings
and is ideal for high-traffic applications. It may also be used as a
finished floor surface when covered with an approved coating.
Key Benefits
LEVELROCK Brand Floor Underlayment PROFLOW provide an economical
way to achieve lightweight, self-leveling floors in commercial and institutional
construction.
Typical applications are less labor intensive than many other types
of construction. 
Higher compressive strengths minimize floor damage from trades and allow
underlayment to be uncovered during construction.
High compressive strengths
at low thickness provides the answer to flooring problems.
Blending with sand at the factory reduces job variables resulting in
high quality installations.
Application over concrete
floors eliminates costly preparation methods.
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Physical Properties
Nominal Compressive Strength (aggregated) ASTM C472 6000-8000 psi
Density (aggregated) 130 lb./cu.ft.
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LEVELROCK® Underlayment RH Saves Time and Helps Homeowners Maintain
Critical Design Elements |
| A Chicago couple building a
log cabin vacation home in the Michigan woods wanted to keep their cabin's
vaulted ceilings uncluttered by ductwork, yet warm enough to withstand Michigan
winters. Just as important, the husband is manager of energy for a major
manufacturer, charged with controlling costs of natural gas for the company's
plants, and was quite conscious of cost- and time-saving products. The wife,
who works for an upscale, Italian-based women's clothing store, was concerned
about the log cabin's design. She wanted to maintain the open feel of the
two-story, 3,300-square-foot cabin, and have the option of using both wood
and tile flooring in different areas of the home.
The answer: Radiant heat flooring and LEVELROCK®
Brand Floor Underlayment RH (Radiant Heat) throughout the cabin.
"LEVELROCK RH underlayment afforded me two things,"
said the husband and homeowner, who oversaw the project. "The first
one was time. The system is stronger than competitive products, and we
were able to pour the floor before the drywall was installed. Second,
LEVELROCK RH underlayment is rated at 2,500 psi, so it's harder than competitive
underlayment products. We poured it to 2 inches and didn't have to put
down a high-strength ceramic tile backer board."
 The
homeowners installed tile, which was used in the kitchen, dining room,
foyer and bathrooms, directly on top of the underlayment. In addition,
the underlayment's high strength eliminated the need for a crack isolation
membrane. "With a competitive product, we would have
had to put cement board on top of that, and then glued the tile down,"
added the homeowner. "LEVELROCK underlayment is economical and dries
quickly, so you can get in and out fast."
Royal Radiant Heat of Holland, Mich., installed the RH system in two
days. A crew of five from S & S Poured Floors, Millersburg, Ind.,
poured three pallets of underlayment in just five hours over the tubing,
providing a thermal mass substrate that boosts the heating system's efficiency.
Douglas fir flooring covered the system in the bedrooms, upstairs loft
area and great room. The cozy home was designed by Rocky Mountain Log
Homes of Hamilton, Mont., and took about 13 months to build.
LEVELROCK RH underlayment
also proved to be ideal for locking the radiant heat tubes in place during
construction. The non-shrinking nature of the underlayment prevents noise
and tube chafing. In addition, its special formulation prevents damage
and deterioration that is often associated with the high temperatures
of radiant heat flooring.
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Viking
Gypsum Floors, 2121 109th AVE NW, COON RAPIDS, MN 55433
Phone: 763-754-6600 — FAX: 763-754-6781
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