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Waterproofing Concrete; A Guide to Using Water Repellent Sealers and Thick Film Barrier Coatings

Concrete and other cementitious surfaces are porous materials that will allow water and soluble contaminants to penetrate the structure leading to degradation.  The effects of degradation can include efflorescence, laitance and physical defects such as cracking and spalling.  Waterproofing concrete can protect it from freeze/thaw cycles, increase chemical resistance, and provide protection to imbedded reinforcing steel.

Product Number: 41206-248-SG
Author: Jayson L. Helsel
Publication Date: 2006
$0.00
$20.00
$20.00

Concrete and other cementitious surfaces are porous materials that will allow water and soluble contaminants to penetrate the structure leading to degradation. The effects of degradation can include efflorescence, laitance and physical defects such as cracking and spalling. Waterproofing concrete can protect it from freeze/thaw cycles, increase chemical resistance, and provide protection to imbedded reinforcing steel. Waterproofing coatings for concrete may include silicon-based water repellant sealers and a variety of organic coatings. Water repellent materials have minimal dry film thickness over the concrete surface, are generally not opaque and need replaced periodically. Thicker film coatings function by providing a physical barrier ranging from a few mils to 100 mils and greater depending on the coating type.  Typical organic coating types include acrylic, vinyl, epoxy, polyurethane and specialized elastomeric coatings.  Concrete surfaces must be properly prepared before the application of any waterproofing coatings. Methods may include mechanical abrasion, pressurized water cleaning and acid etching.

Concrete and other cementitious surfaces are porous materials that will allow water and soluble contaminants to penetrate the structure leading to degradation. The effects of degradation can include efflorescence, laitance and physical defects such as cracking and spalling. Waterproofing concrete can protect it from freeze/thaw cycles, increase chemical resistance, and provide protection to imbedded reinforcing steel. Waterproofing coatings for concrete may include silicon-based water repellant sealers and a variety of organic coatings. Water repellent materials have minimal dry film thickness over the concrete surface, are generally not opaque and need replaced periodically. Thicker film coatings function by providing a physical barrier ranging from a few mils to 100 mils and greater depending on the coating type.  Typical organic coating types include acrylic, vinyl, epoxy, polyurethane and specialized elastomeric coatings.  Concrete surfaces must be properly prepared before the application of any waterproofing coatings. Methods may include mechanical abrasion, pressurized water cleaning and acid etching.

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