03 5400 - Cementitious Flooring Underlayment

(Typically poured underlayments - including gypsum - and not patching materials)

Atlas Tech Products - CA, AZ, NV, NM, UT & CO
Atlas Tech Products provides self-leveling and trowelable floor underlayments to provide a level hard surface prior to installation of tile, wood, carpet and other flooring materials. Tech-Level Premier is self-leveling and can accept coverings after 24 hours. Feather Coat is a fast-drying trowelable skim coat that can accept coverings after 20 minutes.

Kinetics Noise Control
Kinetics Noise Control, Inc. offers several classes of noise control underlayments. Our website includes a large interactive library of STC/IIC tests, which allows for comparison between bare assemblies and built-up noise control composites.

4specs Discussion Forum - Great place to ask questions about specifications, products and technical data. Free - no registration required to read or post (subject to moderation).

Specification Discussions - a wide range of issues on specifications - many full time and independent specifiers contribute their knowledge and experience.
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See also:
09 8500 - Sound Transmission Control Materials for other methods of achieving an STC rating.
For complete Division 03 Concrete products and ingredients listings

Arcosa Specialty Materials - AccuCrete is the most versatile gypsum concrete flooring solution.
ARDEX Americas - Specialty cements for substrate preparation, flooring installation, concrete repair and resurfacing.

CGM, Incorporated
ChemMasters - High quality specialty products to restore, protect, improve and beautify concrete and masonry.
CTS Cement Mfg. Corp. - Rapid Set LevelFlor is a fast-setting, self-leveling floor underlayment for interior and exterior use.
Custom Building Products - CustomTech line of cement self-leveling underlayment and patching products add strength and durability to the floor.
Dayton Superior
Dependable, LLC
Duraamen Engineered Products
Edison Coatings - Withstand heavy vehicular traffic, impact and vibration without loss of adhesion or rapid wear.
Elastizell Corp. of America - Elastizell products are installed by a national network of experienced and approved applicators.
The Euclid Chemical Company - Concrete and masonry admixtures, curing and sealing compounds, epoxy adhesives, floor hardeners and toppings.
Formulated Materials
Hacker Industries
HPS Schonox
Keene Building Products

Lambert Corporation - Lambert Corporation has over 50 years experience producing quality construction chemicals.
Maxxon Corporation - Maxxon Corporation is recognized as the pioneer and leader in floor technologies.
Penetron Specialty Products
Platform Performance Cements
Sider-Crete - Since 1937, manufacturing hard-coat colored stucco and 150+ concrete related coatings.
Silpro
Stone Edge Surfaces
TEC Specialty Construction Brands - TEC is the premier brand of flooring installation materials including tile, stone and terrazzo.
JE Tomes & Associates - Proven Products Since 1935. User friendly, high performance concrete resurfacing, underlayments, and patching.
US Gypsum Company
US MIX Products Company
Uzin Utz North America