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PS105 Silane Water Repellent WB-40 Penetrating Sealer (5 gal.)

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PS105 Silane Water Repellent WB-40 Penetrating Sealer (5 gal.)

Our Price: $219.95
In Stock
Shipping: $30.00 (Fixed shipping cost)
Lead Time: Typically Leaves Warehouse in 1-2 Business Days

Standard Shipping Method: Ground Delivery (3-5 Business Days)

Low VOC, Water Based Sealer for Dense Concrete, Brick & Stone

Product Description

PS105 is a water based penetrating, 40% chemically reactive triethoxyoctylsilane which repels water and moisture from concrete and other masonry offering invisible protection and a low VOC. At only 5 angstroms, its small particle size makes it ideal for very dense substrates made of concrete, brick, stucco, and stone. It penetrates deeply and chemically reacts with concrete and masonry components for long lasting protection. PS105 seals pores and capillaries of substrates preventing liquid and moisture absorption while allowing excellent vapor transmission. It combats efflorescence and dusting, freeze/thaw damage, deicing chemicals, acid rain deterioration, salt intrusion, UV damage, scaling and spalling, dirt buildup, staining, alkali attack, and corrosion of reinforcing steel. It is designed to provide a high level of surface beading with penetration to protect against wind driven rains. PS105 has a milky white appearance. Upon proper application, it generally does not alter the texture of the substrate but may darken the substrate especially with over application.

Recommended Uses

PS105 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. PS105 is recommended for sealing dense concrete and masonry surfaces. It is ideal for sealing commercial and residential structures such as parking lots and structures, marine structures, loading docks, median barriers, bridge decks, pavements, piers, ramps, plazas, courtyards, and balconies. It is also recommended for home and building exteriors, driveways, sidewalks, walkways, porches, steps, pool decking, patios, and other concrete and masonry surfaces. It is suitable for horizontal or vertical and interior or exterior applications. Not intended for below grade waterproofing.


PS105 is designed to work only on cured dense concrete and other masonry substrates 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. 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

PS105 contains no solvents and <260 g/L Volatile Organic Compounds (VOC). This product is considered a 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 dust, dirt, debris, mildew, oil, grease, 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 PS105.


Always test porosity prior to application. Surface should be dry for proper penetration of the sealer. Should not apply to wet or damp surfaces or if rain is expected within 4 hours after application. 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 100°F during the application or drying period. Apply uniformly with a brush, roller, or low pressure sprayer using a ”wet on wet” technique. Product should be applied with a flooding action and be fully absorbed into the surface. Any puddles should be dispersed. For dense surfaces, one saturation application is generally sufficient. However, for porous surfaces where additional product can be absorbed, multiple saturation applications may be applied to enhance beading action and water repellency. Excessive or over application may cause discoloration of the substrate. Clean application materials with warm water.


Flat and clear.

Coverage Rate

150-250 sq. ft./Gal. for dense concrete and brick surfaces. 250-400 sq. ft./Gal. for stone surfaces. Coverage rates are approximate and for estimating purposes only.

Drying Time

Dry to touch in 1-3 hours and for traffic in 6-12 hours. Drying times are for estimating purposes only. Actual drying times are based upon temperature and humidity.

Shelf Life

2 years 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 sheet, and SDS sheet. For your benefit, this information is included below.

 PS105 Product Label

 PS105 Technical Data Sheet

 PS105 SDS Sheet

Type of Surface:

Expected Coverage Rate:

to sq. ft/gallon

Enter Your Sq. Ft:


Expected Number of Gallons:


Type of Surface:

Expected Coverage Rate:

to sq. ft/gallon

Enter Your Sq. Ft:


Expected Number of Gallons: