Clear Water Repellent Sealers

Stifel GCBack to product index

Silane Sealer for Horizontal or Vertical Concrete

This silane sealer for vertical and horizontal concrete is an economical option for preventing water-absorption on concrete surfaces.

Note: Choose Options to Buy Online

Find a Distributor
Additional Details

Stifel GC is a silane sealer for vertical and horizontal concrete. This product guards treated surfaces from freeze/thaw damage cycles, deicing salts and the absorption of water – without modifying the surface appearance. Stifel GC can be applied to both brick masonry and concrete masonry surfaces.

Stifel GC is a water-based silane because it has a molecular structure small enough to penetrate concrete up to ½ inch or more. It then reacts with siliceous material to form a hydrophobic barrier. Therefore, it prevents water and waterborne chloride absorption.

Stifel GC is safe and easy to use. Its single-component formulation is very low odor and has a high flash point (>200° F/100° C).


• All exterior, vertical or horizontal cast-in-place or precast concrete

• To protect structural concrete bridge decks and parking garage driving surfaces

• Exterior, vertical concrete, brick masonry and concrete masonry surfaces

• New or existing substrates

• Where conventional silanes containing hydrocarbon solvent carriers cannot safely be used

Advantages of Stifel GC for Vertical and Horizontal Concrete

• Achieves deep penetration due to silane that doesn't evaporate under site application conditions

• Contains a unique silane that goes into the concrete rather than into the atmosphere

• Formulated with 10% active solids

• Meets all federal and state VOC requirements

• Allows treated surfaces to breathe naturally

• Guards against water and chloride ion-containing deicing salts

• Minimizes surface scaling due to concrete freeze/thaw cycles

• Protects treated concrete from delamination and spalling

• Substantially extends the serviceable life of concrete structures

• Green Engineered™ in order to be better for health and the environment

Resource Downloads

Product Data Sheet
English PDS - Stifel GC    
French PDS - Stifel GC    
Spanish PDS - Stifel GC

Safety Data Sheets
English SDS - Stifel GC, VC, SC    
Spanish SDS - Stifel GC, VC, SC

Additional Documents
Precast Market Brochure    
Stifel Sell Sheet    
Stifel Specification Guide    
Decorative Brochure

Guide Specifications