Fiber-Cement Siding Failure is another website by Michael Leavitt devoted to learning the correct way to build a house.  This site is devoted to modern fiber-cement siding. Whether James Hardie, Certainteed, Nachiha, GAF, Allura or other, it is important to have the materials installed per the manufacturer's installation specs to prevent voiding the warranty and to prevent water entry, rot, damage, and/or premature product failure. 

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