The question on whether to use mortar or to use the alternative method of mortar-less installation is often asked when planning a glass block installation project.
Advantages and Disadvantages of Mortar Glass Block Installation
Beyond the project flexibility afforded through the use of mortar installation, the advantage of mortar is that it binds the surfaces of the adjacent blocks together. This aids in stability. The mortar also conforms to the shape of each block. Because the mortar is in contact with the whole surface of each block, loads are spread evenly.
The disadvantages are that mortar is heavy and needs care when carrying; it requires a lot of work to mix unless you use mechanical methods; it must be mixed to the correct consistency; it cannot be used in extreme temperatures; and applying mortar requires skill achieved only through experience. Most of the disadvantages are overcome when a skilled individual is performing the installation with proper tools and materials.
Eastern Glass Block uses Pittsburgh Corning Glass Block offering a mortar and mortar-less alternative. The following can use the Premier Series glass block that comes in a range of sizes, shapes and optional finishing end blocks.
Mortar I and Mortar II
Mortar I:
The installation recommendations are for small residential panels of 25 sq. ft. or less. This method is not for use in constructing curved glass block walls. Interior and exterior panels must be framed on all four sides.
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Mortar II:
The installation recommendations are for interior or exterior residential panels larger than 25 sq. ft. This method may be used to install projects framed on two, three, or four sides. Using the Premiere Series – Panel size limitations – Interior (250 sq. ft. max) and Exterior (144 sq. ft. max.). Using the Thinline™ Series – Panel size limitations – Interior (150 sq. ft. max.) and Exterior (85 sq. ft. max.).
Mortar-less glass installation is an alternative to the mortar methods. Mortar-less panels uses tracks and a spacer between each of the glass blocks. The spacer ensures uniform spacing between the blocks. The troughs or grooves are filled with sealant which binds the blocks together and keeps out moisture. Mortar-less glass block installation is available for showers, windows, and more.
ProVantage I and Provantage II
ProVantage I
The ProVantage I method may be used to install projects framed on two, three, or four sides. This is a mortar-less installation system for Premiere Series glass block straight panels using perimeter channels. This method is used to install straight walls in 4-sided openings. In this method, glass block panels are installed in perimeter channel.
ProVantage II
The ProVantage II is a mortar-less installation system for Premiere Series glass block includes straight, curved or angled panels using wall anchors. This method is used to install straight and 90° angled walls and straight walls framed on at least two sides. In this method, glass block panels are secured to the wall using special wall anchors. The maximum opening size for exterior panels is 50 square feet, framed on all four sides. The maximum opening size for interior panels is 85 square feet, framed on at least two sides. The joints of these panels can be finished with ProVantage®Glass Block Surface Grout. Sealant finishing can only be used on straight walls in 4-sided openings, and it is not recommended for wet environments.
Eastern Glass Block is an expert at performing glass block installations Using an experienced installer can save you time and frustration while having the pride of designing and managing the project that results in a solution that fits your specific need. Call us at 800-635-1226; or email us at info@easternglassblock.com. We have been serving the New York, New Jersey and Philadelphia areas for over 20 years.
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