Masonite siding, also called high-density fiberboard, is a type of
fiberboard, which is an engineered wood product. It is similar to particle board
and medium-density fiberboard, but is much harder and denser because it is made
out of exploded wood fibers that have been highly compressed. It is sometimes
referred to as masonite because that was the first brand.
Unlike solid wood, it is very homogeneous with no grain. However, Masonite
siding can be glued onto it to give the appearance of solid wood. Other overlays
include formica and vinyl. It has many uses, such as a substrate, but unlike
plywood and solid wood, it has no structural strength to speak of. It is used in
construction, furniture, appliances, automobiles and cabinetry.
Masonite siding is produced in either a wet or dry process, which produce a
panel called S1S or S2S respectively. The wet process only leaves one smooth
side, but dry processed hardboard is smooth on both sides. Like other types of
fiberboard, hardboard is susceptible to moisture damage and is generally not
used outside. Tempered hardboard is made by adding an oil that becomes a polymer
when the board is formed under high temperature and pressure. This gives it more
water resistance, hardness, rigidity and tensile strength. It is used in
construction siding.
There are a lot of legal problems with Masonite siding. please
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