BUILDING - ABOVE-GRADE WATERPROOFING
INTRODUCTIONWaterproofing of surfaces above grade is the prevention of water intrusion into exposed elements of a structure or its components. Above-grade materials are not subject to hydrostatic...
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WATERPROOFING DIFFERENCES FROM BELW-GRADE SYSTEMS
Most above-grade materials are breathable in that they allow for negative vapor transmission.This is similar to human skin; it is waterproof, allowing you to swim and bathe but also to perspire, which...
View ArticleWATERPROOFING VERTICAL APPLICATIONS
Several systems are available for weatherproofing vertical wall envelope applications. Clear sealers are useful when substrate aesthetics are important. These sealers are typically applied over precast...
View ArticleWATERPROOFING HORIZONTAL APPLICATIONS
Several types of systems and products are available for horizontal above-grade applications, such as parking garages and plaza decks. Surface coatings, which apply directly to exposed surfaces of...
View ArticleABOVE-GRADE EXPOSURE PROBLEMS - WATERPROOF SYSTEMS IN BUILDINGS
All above-grade waterproof systems are vulnerable to a host of detrimental conditions due to their exposure to weathering elements and substrate performance under these conditions. Exposure of the...
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CLEAR REPELLENTS - WATERPROOFING SYSTEMS
Although clear sealers do not fit the definition of true waterproofing systems, they do add water repellency to substrates where solid coatings as an architectural finish are not acceptable (see Fig....
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CHOOSING THE APPROPRIATE REPELLENT - WATERPROOFING SYSTEMS
Without any doubt, choosing the correct water repellent for a specific installation can be a difficult task.Sealer manufacturers offer you little assistance as you try to find your way through the maze...
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WATER-REPELLENT APPLICATION - WATERPROOFING
General surface preparations for all clear water-repellent applications require that the substrate be clean and dry. (Siloxane applications can be applied to slightly damp surfaces, but it is advisable...
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CEMENTITIOUS COATINGS: Properties and Installations
Cementitious-based coatings are among the oldest products used for above-grade water-proofing applications. Their successful use continues today, even with the numerous clear and elastomeric sealers...
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CEMENTITIOUS COATING APPLICATION
For adequate bonding to substrates, surfaces to receive cementitious coatings should be cleaned of contaminants including dirt, efflorescence, form-release agents, laitance, residues of previous...
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ELASTOMERIC COATINGS - WATERPROOFING OF BUILDINGS
Paints and elastomeric coatings are similar in that they always contain three basic elements in a liquid state: pigment, binder, and solvent. In addition, both often contain special additives such as...
View ArticleCONSIDERATIONS OF SUSTAINABILITY IN WOOD CONSTRUCTION
Wood: A Renewable ResourceWood is the only major structural material that is renewable.In the United States and Canada, tree growth each year greatly exceeds the volume of harvested trees, though many...
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ELASTOMERIC COATING APPLICATION
Successful application of elastomeric coatings depends entirely on proper substrate preparation. Although they are effective waterproof materials, they should not be applied over cracks, voids, or...
View ArticleDECK COATINGS
Several choices are available for effective waterproofing of horizontal portions of a building envelope. Several additional choices of finishes or wearing surfaces over this waterproofing are also...
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Deck Coating Formulations: Acrylics, Cementitious coatings, Epoxy, Asphalt...
AcrylicsAcrylics are not waterproof coatings, but act as water-repellent sealers. Their use is primarily aesthetic, to cover surface defects and cracking in decks. These coatings have low elastomeric...
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Deck Coating - Sheet systems
While they do not fit the description of a deck coating per se, there are balcony and deck waterproofing systems that are available in sheet materials that provide waterproofing capabilities. There are...
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DECK-COATING CHARACTERISTICS
Deck coatings bond directly to concrete, wood, or metal substrates. This prevents lateral movement of water beneath the coatings, as is possible with sheet good systems. Once cured, coatings are...
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DECK-COATING APPLICATION
When deck coatings are being applied at a job site, it is the only time when golf shoes are mandatory attire! Liquid deck coatings are required to be squeegee-applied to ensure sufficient and uniform...
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CLEAR DECK SEALERS - BUILDING
Although similar to vertical surface sealers, clear horizontal sealers require a higher percentage of solids content to withstand the wearing conditions encountered at horizontal areas. Decks are...
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PROTECTED MEMBRANES - WATERPROOFING PROTECTION
With certain designs, horizontal above-grade decks require the same waterproofing protection as below-grade areas subjected to water table conditions. At these areas, membranes are chosen in much the...
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