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1/2" (13mm) Alkali Resistant Glass Fibers
For primary reinforcement in GFRZ Pro backer coat. Will greatly increase the flexural and tensile strength. Use approx. 1.35 lbs per 45 lb bag of GFRZ Pro or 3% weight of dry powder concrete mix.
Also available in 50 lbs here.
Watch our full instructional video below and skip ahead to "mixing the backer coat" to learn how to add fibers to GFRZ Pro.
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"a most for my work"