PS104 Lithium Silicate Densifying WB Penetrating Sealer w/ Siliconate Repellent (5 gal.)

PS104 Lithium Silicate Densifying WB Penetrating Sealer w/ Siliconate Repellent (5 gal.)
ITEM #: PS1045G
Brand: Concrete Sealers USA
Availability: In Stock
Lead time: Typically Leaves Warehouse in 1-2 Business Days
Shipping: $30.00 (Fixed Shipping Cost)
STANDARD SHIPPING METHOD: Ground Delivery (3 - 5 Business Days)
Densifier & Hardener + Water & Salt Repellent
Lithium Silicate + Siliconate
# of components
1 Part System
carrier type
Water Based
voc content
0 g/L

Zero VOC, Water Based Concrete Floor Densifier & Hardener w/ Siliconate Repellent

Product Description

PS104 is a lithium silicate solution with a siliconate water and salt repellent that is designed to harden and increase surface strength, reduce dusting, and improve water and salt resistance for most unsealed concrete and masonry surfaces. It is an ideal treatment for machine troweled, burnished, or polished concrete surfaces. The sealer reacts with a cementitious surface to densify and add water and salt repellency while allowing deep penetration to chemically harden and fortify the substrate. PS104 limits dirt build up, deep staining, and makes surfaces easier to clean and maintain. After the chemical reaction occurs, the substrate will be more abrasion resistant with increased protection of the surface from wear, moisture, dust, efflorescence, dirt, deep stains, mold and mildew, and salts and deicing chemicals while remaining breathable. PS104 has a clear appearance. Upon proper application, the substrate will have little, or no, noticeable change in appearance when dry. However, a polished appearance can normally be imparted to burnished or polished surfaces by applying with scrubber or polisher and then buffing with a white pad.

Recommended Uses

PS104 was originally developed for commercial and industrial applications and is widely used throughout North America to this day for those applications. Concrete Sealers USA is now also making this professional grade sealer available to the residential market so small contractors, applicators, and do-it-yourselfers can enjoy the same superior benefits that architects, engineers, and large contractors have enjoyed for years. PS104 is recommended for densifying, hardening, increasing surface strength, and improving water and salt repellence for most concrete and masonry surfaces where long term resistance to dirt buildup and deep staining, dusting, abrasion, efflorescence, salt intrusion, and water and moisture absorption is important. It is ideal for sealing commercial and residential concrete floors such as workshop floors, warehouse floors, automotive garage floors, retail store floors, pole barn and shed floors, basement floors, garage floors, and other machine troweled, burnished, or polished concrete flooring where a slight sheen is desired.


PS104 is designed to work only on cured machine troweled and smooth concrete surfaces and is not intended for asphalt. This product may damage vegetation or may etch glass, vinyl, aluminum, plastic, and metal. Avoid contact with eyes and skin. Sealer may be damaged if frozen prior to use. Not intended to seal cracks. Will not remediate structurally unsound surfaces with defects. The use of high alkaline or acidic cleaners on the treated surface is not recommended and can be damaging. PS104 is not oleophobic and is not intended as an oil repellent. The Company does not warranty specific performance results or compatibility with products manufactured by others. The Company shall bear no liability, other than replacement of defective product. A small test must be conducted prior to application. Based upon this test, the purchaser shall determine for themselves the suitability of this product for the intended use.

Environmental and Regulatory

PS104 complies with EPA, FDA and OSHA strict requirements and contains no solvents or Volatile Organic Compounds (VOC). This product is considered a non-hazardous chemical under OSHA Hazard Communication Standard (29CFR 1910.1200). Contact may cause skin or eye irritation. Using with adequate air ventilation, eye protection, and gloves is recommended.


Manufactured in the USA for Concrete Sealers USA.

Surface Preparation

Substrates to be sealed must be a minimum of 28 days old and/ or be fully cured. The surface must be clean and porous enough to allow penetration into the substrate. Surfaces should be clean and free of surface laitance, dust, dirt, debris, mildew, oil, grease, previous sealers, curing agents, paint or other surface coatings, and other contaminants. If acid or other cleaning compound is used for cleaning or etching the surface, neutralize the surface completely before application of PS104. Under certain conditions, a precipitate may be deposited as the lithium solution dries. Substrates with a high acid level will react with the lithium solution and can cause some neutralization of the material before it is absorbed into the surface leaving a white precipitate. This white precipitate does not affect sealer performance and generally dissipates over time or remove with water and stiff broom or floor buffer. A test should be made to determine that none of these conditions exist.


Always test porosity prior to application, especially on very dense surfaces. Surface should be dry for proper penetration of the sealer. Should not apply to damp or wet surfaces. Product is a one part system and requires no special mixing. Stir material thoroughly before and during application. Do not apply below 40°F or above 95°F during the application or drying period. Apply uniformly with a low pressure sprayer. When applying material, work in small, manageable areas at a time in order to maintain a wet edge. Product should be applied to the point of rejection and be fully absorbed within 10 minutes without puddles. Use a broom, roller, or microfiber pad to evenly distribute product as well as disperse any puddles as excessive application may result in white residue (especially on darker or colored surfaces) which will not affect sealer performance and generally dissipates over time or by power washing. White residue may also form if surface has high alkali or acid content. To reduce likelihood of white residue on surface, rinse the surface thoroughly with water 2 hours after final application of sealer and then sweep up to remove any residual materials. Generally, only one application is required. If additional coats are desired and more product can be absorbed, wait approximately 1-2 hours between coats. For a more polished appearance on burnished or polished surfaces, apply using a floor scrubber (black pad) or high speed polisher and then buff with a white pad after 12 hours. Clean application materials with warm water.


Under normal conditions the sealer will dry clear and flat. However, a polished appearance can normally be imparted to burnished or polished concrete surfaces by applying with scrubbber or polisher and then buffing with a white pad. Polished appearance is based solely upon application procedure of the applicator.

Coverage Rate

350-500 sq. ft./Gal. for machine troweled and smooth surfaces. Coverage rates are approximate and for estimating purposes only.

Drying Time

Dry to touch in 1-3 hours and for traffic in 12-24 hours. Drying times are for estimating purposes only. Actual drying times are based upon temperature, humidity, and air flow.

Shelf Life

1 year unopened.

Safety and First Aid

Eyes: Flush with water for at least 15 minutes.

Skin: Wash thoroughly with soap and water.

Inhalation: Move subject to fresh air.

Digestion: Consult physician immediately.

Typically Leaves Warehouse in 1-2 Business Days and Arrives via Ground Delivery 

Ground Delivery 
This item is delivered via Standard Ground Delivery service via UPS or Fed Ex and generally arrives within 3-5 business days of leaving the warehouse. At this time, we do not offer any premium or express delivery options (ex. Next Day Air).

Prior to use, we would recommend consulting the product label, product technical data sheet, and SDS sheet. For your benefit, this information is included below.

 PS104 Product Label

 PS104 Technical Data Sheet

 PS104 SDS Sheet


The following coverage rates are approximate and for estimating purposes only. We would recommend making test applications on actual surfaces to determine exact coverage rates.

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