Silane Reactive Penetrating Sealers

Last edit date: 4/17/2024

The following Silane Reactive Penetrating Sealers have been authorized for use when specifications require a Silane Waterproofing Treatment. Typical uses are for providing protection from water and waterborne contaminants to above grade concrete and masonry substrates. Silane Reactive Penetrating Sealers permeate concrete and masonry surfaces, adding hydrophobic properties to repel water and prevent chloride intrusion, while allowing water vapor to escape.

Silane Reactive Penetrating Sealers must meet the volatile organic carbon (VOC) content restrictions of the local Air Quality Management Districts in which they are applied. For California Department of Transportation (Caltrans) projects within the South Coast Air Quality Management District (SCAQMD), Silane Reactive Penetrating Sealers can only be used for reinforced concrete bridge structures within five miles of the ocean or above 4000 feet in elevation. Prior to use on the project the product must be authorized by the Chemical Testing Branch. Refer to Section 54-7 Silane Waterproofing Treatment, of the Caltrans 2018 Standard Specifications.

Manufacturer Product Name Expiration DateBABA Act Information*
Advanced Chemical Technologies ATS 100-LV 12/2025Unconfirmed
Dow Corning Corporation - Elizabethtown Xiameter™ OFS 6341 6/2025Unconfirmed
Euclid Chemical Company Baracade Silane 100 C 10/2028Unconfirmed
Evonik Corporation Protectosil Chem-Trete BSM 350 * 6/2025Manufactured product, covered by 1983 waiver
IMRAE Corporation CoatMasters® 2007R 6/2025Manufactured product, domestic source reported
PROSOCO, Incorporated SL 100 Water Repellent * 6/2025Unconfirmed
Sika Corporation Sikagard – 705L 6/2027Unconfirmed
Sika Corporation Sikagard – 740W 6/2027Unconfirmed

* Authorized for contractor use only.

The information contained herein, shall not be used for advertising purposes, nor is it an endorsement by Caltrans.

Evaluation Criteria: Instructions of how a product can be placed on the authorized material list can be found in the Silane Reactive Penetrating Sealer, Material Authorization Requirements and Acceptance Criteria.

Caltrans contact: Chemical Testing Branch,

*As attested to by the supplier.

The California Department of Transportation (Caltrans) is implementing statutory changes required by the Bipartisan Infrastructure Law – Build America, Buy America Act (BABA), which expands Buy America to additional construction materials, in addition to steel or iron materials and manufactured products.