Armstrong Flooring S-194 Patch, Underlayment & Embossing Leveler and S-195 Underlayment Additive DATA SHEET


Injurious to eyes
Causes Skin irritation
Respiratory hazard by inhalation


S-194 Material Safety Data Sheet
S-195 Material Safety Data Sheet

Product Information

TypeFast-setting, portland cement-type material mixed with plain water or S-195 Underlayment Additive
TrowelSmooth-edge trowel
Single Layer Application Range:

Maximum Thickness:

Units and Coverage10-pound bag – 16 sq. ft. at 1/8″ thick
25-pound bag – 40 sq. ft. at 1/8″ thick
Embossing Leveler – 10 lbs. powder to 2 quarts S-195 covers 580-815 sq. ft.
Mix Ratio3 parts powder to 1 part water
1 pound powder to 5 ounces water
2 and one-half parts powder to 1 part S-195
1 pound powder to 6.5 ounces S-195
10 pounds powder to 2 quarts S-195
25 pounds powder to 5 quarts S-195
Pot Life12-20 minutes at 73° F (23° C) when mixed with water
14-20 minutes at 73° F (23° C) when mixed with S-195
Compressive Strength>5,000 psi at 28 days
Shelf LifeOne year, unopened
Freeze/Thaw StableS-194: Yes, will not freeze; S-195 Underlayment Additive: No, keep from freezing
VOC Content of S-1950 g/L; calculated and reported, SCAQMD 1113

Product Data Table: S-194

Size10 pound bag – 4/ctn
25 pound bag
Item No.00194410 – 10 lb bag
00194250 – 25 lb bag
Item UPC042369194037 – 10 lb bag
042369094016 – 25 lb bag
Weight10.42 lbs – 10 lb bag
25.23 lbs – 25 lb bag
Bags per Pallet40 ctns/pallet – 10 lb bag
100 bags/pallet – 25 lb bag

Product Data Table: S-195

Item No.00195408
Item/Carton UPC0-42369-18991-0
Carton Weight36.65 lbs
Items per Carton4/carton
Cartons per Pallet36


When Armstrong Flooring S-194 & S-195 are used with a recommended Armstrong Flooring application, the Armstrong Flooring Guaranteed Installation System warranty applies.

Product Features

For the following Commercial and Residential uses:

  • Patching, skim coating, and overall leveling concrete on any grade level, ceramic tile, quarry tile, and terrazzo (except metal terrazzo strips) when mixed with water or S-195.
  • Patching, skim coating, and overall leveling all grade levels of steel, stainless steel, brass and lead when mixed with S-195.
  • Covering existing asphalt cutback adhesive residue over concrete only when mixed with water (do not use over other adhesive residues).
  • Patching, repairing small voids, and skim coating wood underlayments; may be used for overall leveling of approved suspended wood underlayments when mixed with S-195. Not recommended for use on strip wood floors.
  • Filling and leveling the embossing of single-layer existing resilient flooring prior to the installation of new residential resilient flooring when mixed with S-195.

NOTE: Not recommended for use on stripwood floors or overall leveling of wood floors.

Application Instructions

Most water-based adhesives applied over S-194 will exhibit shorter working times than expected. Warm or hot water will shorten the working time of S-194.

When applying Armstrong adhesives over S-194, use the recommended fine notch trowel. Most adhesives will exhibit shorter working times over S-194 used as an embossing leveler.
Floor PreparationAll surfaces must be clean and free of dirt, oil, grease, plaster, curing compounds, polish, wax and other foreign matter. Old asphaltic “cutback” adhesive* residue may either be removed or covered directly with S-194. Concrete floors must be free of excess moisture and/or alkali. Dampen concrete floors with clean water or prime with S-185 Latex Primer. Do not leave standing puddles of water or primer. Apply underlayment while floor is still damp with water or when primer is dry to the touch. When filling small voids in wood floors, prime areas to be patched with S-185 for a superior bond. Allow primer to dry before underlayment is applied. For a superior bond when flashing and skim coating, mix S-194 powder with S-195. Do not prime existing resilient flooring.
Powder and water or latex are easily mixed in a pail or mortar box. Mix three parts of S-194 to one part cool water or mix two and one-half parts of S-194 to one part of S-195. Mixing containers must be clean at all times, since unused material in the container will contaminate newly mixed underlayment. Mix to a smooth, lump-free consistency; do not over mix. S-194 should remain workable for 12-15 minutes. To extend the pot life, periodically continue stirring the unused patch in the mixing container. Do not add extra water after proper consistency has been achieved. If underlayment starts to set up before it is used, discard it. S-194 must be mixed with S-195 when using over wood underlayments, filling wood underlayment joints and over metal substrates. Flooring can be applied after the underlayment has dried 60 to 90 minutes.

Mix two and one-half parts powder by volume to one part S-195 using a clean mixing container at all times. Mix to a smooth, lump-free consistency; do not over mix. Do not add extra latex additive after proper consistency has been achieved. If embossing leveler starts to set up before it is used, discard it.
Pour the thoroughly mixed S-194 from the mixing container and apply using a smooth-edge trowel. Finish flush with the adjacent subfloor. Apply sufficient pressure to the patch with the trowel to fill defects and to feather-edge the patch to the subfloor. During troweling, it is helpful to dip the trowel in clean water from time to time to keep the mix from sticking to the trowel. S-194 may be applied in single layers to a maximum thickness of 1/2″ or the total of two layers (up to 1/2″ each) not to exceed a thickness of 1″. Allow the first layer to dry at least 60 minutes before applying the second layer.

Remove all ridges, puddles and high spots to a point that the adhesive looks like a stain on the surface of the concrete. Using the S-194 mixed with water, apply the patch using a 1/8″ x 1/8″ x 1/8″ square-notched trowel over the cutback adhesive residue. Let dry completely. Again using S-194 mixed with water, apply a second coat of patch using a smooth-edge trowel filling in the recessed areas to provide a smooth finished substrate and covering the cutback completely to prevent bleeding through the new flooring.

Metal substrates must be cleaned and roughened before applying the S-194. Using the S-194 mixed with S-195, apply the patch over the metal and allow the patch to dry completely before installing the floor covering.

For best results, pour the S-194 from the bucket immediately after mixing. Although the working time is 25 minutes, S-194 when mixed with S-195 has a pot life of 14-20 minutes at 73° F (23° C). After placing the S-194 on the substrate, fill the embossed areas of the existing floor while removing most of the S-194 from the unembossed areas using a smooth-edge trowel. Hold the trowel on a 60° angle and apply the leveler with the same motion as spreading a conventional adhesive, troweling at a 45° angle to the embossing. This product should not be over troweled or retroweled. Clean the tools frequently with water and a coarse cloth. Drying time is approximately 1-1/2 to 2 hours depending on atmospheric conditions. To achieve proper bonding, S-194 must be completely dry. Trowel ridges and unevenness in the S-194 can be removed by scraping with a wallpaper scraper or the front edge of a smooth-edge trowel. Under most conditions, one application of S-194 will level the existing resilient flooring sufficiently. Inspect the existing resilient flooring and S-194 for smoothness after the S-194 has dried completely. At that time, you may determine that you will need a second application. The second application will normally dry faster, approximately one hour. Make sure the S-194 is completely dry before proceeding.
Clean-upClean tools with water frequently before material dries.

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S-194 Patch, Underlayment & Embossing LevelerS-195 Liquid Underlayment Additive
Updated on August 24, 2022