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If properly installed and maintained, the life of the masonite may be extended. However, there are serious deterioration issues that will eventually occur. Buckling, rotting, softening, blistering and insect infestation can also wreak havoc on damaged masonite.
Also to know is, how long does Masonite siding last?
20 years
Then, is Masonite siding good?
Masonite Siding: A Strong Alternative. If your wood siding is swelling, cracking, or constantly needs repainting, then you may want to look into Masonite siding. It is remarkable how much this product resembles traditional lumber in terms of its look, yet avoids the flaws of conventional wood due to its strength.
Masonite is a type of hardboard, a kind of engineered wood, which is made of steam-cooked and pressure-molded wood fibers in a process patented by William H. Mason. It is also called Quartrboard, Isorel, hernit, karlit, torex, treetex, and pressboard.