Fiber Cement Siding Maintenance and Longevity Fiber cement siding composition may vary from company to company, but the basic recipe is Portland cement, sand, and cellulose (wood) fibers. Wood fiber ...

Q. The cement siding on parts of my house is disintegrating. When my builder sold me on this fiber-cement siding, he claimed it would last forever. Is my cement board siding defective, did the builder ...