PS108 Sodium Silicate Densifying WB Penetrating Sealer w/ Siliconate Repellent (5 gal.)

PS108 Sodium Silicate Densifying WB Penetrating Sealer w/ Siliconate Repellent (5 gal.)
ITEM #: PS1085G
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
Sodium 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

PS108 is an economical, water based 100% active sodium silicate solution with a siliconate water and salt repellent additive that penetrates into an unsealed cementitious surface to increase density, hardness, and strength of the concrete while retaining its breathability. These properties restrict moisture absorption, reduce dusting, protect against efflorescence, impart water repellence, resist salts and deicing chemicals, improve resistance to dirt build up and deep stains, retard mold and mildew, and lower the maintenance of the surface. It is an ideal treatment for machine troweled, burnished, or polished concrete surfaces. PS108 penetrates deeply into the surface filling the pores and capillaries of the concrete and reacting with the free lime and calcium hydroxide therefore yielding a protected, hardened, and dense floor. Sealer is VOC compliant, non-flammable and has odorless formula for easy indoor use. Sealer provides excellent non-slip, high traction properties, resulting in a safer floor surface. Yields UV stable surface with improved resistance to abrasion, scuffing, deep staining, salts and moisture. PS108 has a clear appearance. Upon proper allocation, 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

PS108 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. PS108 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.


PS108 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. PS108 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

PS108 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 PS108. Under certain conditions, a precipitate may be deposited as the sodium solution dries. Substrates with a high acid level will react with the sodium 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 microfiber pad, roller, low pressure sprayer, floor scrubber (black pad), or high speed polisher. 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. Puddles should be dispersed as excessive application may result in white residue 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 hour between coats. For a more polished appearance on burnished or polished surfaces, 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

300-400 sq. ft./Gal. for machine troweled and smooth surfaces. Coverage rates are approximate and for estimating purposes only.

Drying Time

Dry to touch in 1-2 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.

 PS108 Product Label

 PS108 Technical Data Sheet

 PS108 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.

Sign up for our newsletter