# Masonite

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Engineered wood made of steamed and pressure-molded fibers

For the manufacturer of doors and related products, see [Masonite International](/source/Masonite_International).

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Masonite board

Back side of a masonite board

Isorel, c. 1920

Quartrboard,[1] Masonite Corporation, c. 1930

**Masonite**, also called **Quartboard** or **pressboard**,[2] is a type of [engineered wood](/source/Engineered_wood) made of steam-cooked and pressure-molded wood or paper fibers. The fibers form a stiff, dense material in a range of weights.[3]

The process was formulated and patented by American inventor [William H. Mason](/source/William_H._Mason).[4]

Masonite has been widely used in traditional school and office products such as [spiral-bound](/source/Coil_binding) notebooks and three-ring binders, but its unique physical characteristics lend themselves readily to a variety of end-uses, including (but not limited to) document storage, filing supplies (classification and file folders), report covers, folding cartons, tags, labels, and industrial applications.[5][6][7]

## History

In 1898, a product resembling Masonite ([hardboard](/source/Hardboard)) was first made in [England](/source/England) by hot-pressing waste paper.[8]

In 1924, Masonite was patented in [Laurel, Mississippi](/source/Laurel%2C_Mississippi),[9] by [William H. Mason](/source/William_H._Mason), who was a friend and protégé of [Thomas Edison](/source/Thomas_Edison).[10]

In 1929, the company initiated [mass production](/source/Mass_production) of its product.[*[citation needed](https://en.wikipedia.org/wiki/Wikipedia:Citation_needed)*]

In the 1930s and 1940s, Masonite was used for applications including [doors](/source/Doors), [roofing](/source/Roofing_material), [walls](/source/Wall), [desktops](/source/Desk), guitars (e.g., [Danelectro](/source/Danelectro)), and [canoes](/source/Canoes). It was sometimes used for house siding. Similar "tempered hardboard" is now a generic product made by many forest product companies.[*[citation needed](https://en.wikipedia.org/wiki/Wikipedia:Citation_needed)*]

In 1972, the Masonite Corporation entered the door business as a supplier of facings.[11]

In 1982, the Masonite Corporation spun off its timber property. In 1984, [USG](/source/USG_Corporation) acquired Masonite.[12] In 1988, USG sold Masonite to International Paper.[13]

In 2001, the Masonite Corporation was purchased by Premdor Corporation, a door maker, from its former parent [International Paper](/source/International_Paper). It no longer supplies generic hardboard.[*[citation needed](https://en.wikipedia.org/wiki/Wikipedia:Citation_needed)*]

## Production

Masonite is formed using the Mason method,[14] in which [wood](/source/Wood) chips are disintegrated by saturating them with 100-pound-per-square-inch (690 kPa) steam, then increasing the steam or air pressure to 400 pounds per square inch (2,800 kPa) and suddenly releasing them through an orifice to atmospheric pressure, forming the fibers into boards on a screen. The boards are then pressed and heated to form the finished product with a smooth burnished finish. (Later a dry process with two burnished surfaces was also used.) The original [lignin](/source/Lignin) in the wood serves to bond the fibers without any added [adhesive](/source/Adhesive). The long fibers give Masonite a high [bending](/source/Bending) strength, [tensile strength](/source/Tensile_strength), density, and stability. Unlike other composite wood panels, no [formaldehyde](/source/Formaldehyde)-based resins are used to bind the fibers in Masonite.[*[citation needed](https://en.wikipedia.org/wiki/Wikipedia:Citation_needed)*]

## Materials

Masonite may contain recycled fiber content (including [post-consumer waste](/source/Post-consumer_waste)), and is typically itself [recyclable](/source/Recyclable_waste) and [biodegradable](/source/Biodegradable_waste), making it an environmentally-sound choice for those seeking an alternative to petroleum-derived substrates.

Masonite has also been made from [cornstalks](/source/Maize).[15]

## Use

A chessboard made of Masonite

Artists have often used it as a support for painting,[16][17] and in artistic media such as [linocut](/source/Linocut) printing. Masonite's smooth surface makes it a suitable material for [table tennis](/source/Table_tennis) tables and [skateboard](/source/Skateboarding) ramps.[*[citation needed](https://en.wikipedia.org/wiki/Wikipedia:Citation_needed)*]

Masonite is used by [moving companies](/source/Moving_companies). Among other things, they use it to protect the walls of buildings where they work, and lay on floors to enable smooth rolling of dollies loaded with goods.[18]

Masonite was used as rear cover in many consumer electronics, from the 1930s up until the early 1980s. It was more heat resistant than contemporary plastic materials which was especially important for vacuum tube TVs and radios which generated high levels of heat in extended use, and also had a lower weight. It also has some electrical insulation properties which were considered particularly useful for safety. It was durable in home electronics, easy to shape and print, various inscriptions regarding to the connections or warnings were easily legible. Later, it was displaced in these applications, as more suitable plastics were developed and new designs evolved, making masonite obsolete in this application.

## Deterioration

Masonite swells and rots over time when exposed to the elements, and may prematurely deteriorate when it is used as exterior siding. In 1996, International Paper (IP) lost a class action suit brought by homeowners whose Masonite siding had deteriorated. The jury found that IP's Masonite siding was defective.[19]

## See also

- [Fiberboard](/source/Fiberboard) – Engineered wood product made out of wood fibers

- [Oriented strand board](/source/Oriented_strand_board) – Engineered wood particle board

- *[Paintings on Masonite](/source/Paintings_on_Masonite)* – Series of paintings by Joan Miró

- [Particle board](/source/Particle_board) – Glued wood product

- [Plywood](/source/Plywood) – Manufactured wood panel made from thin sheets of wood veneer

## References

Wikimedia Commons has media related to [Masonite](https://commons.wikimedia.org/wiki/Category:Masonite).

1. **[^](#cite_ref-1)** [Quartrboard. First Use Anywhere Date: 1927-05-13](http://trademarks.justia.com/712/68/quartrboard-71268992.html)

1. **[^](#cite_ref-2)** [Masonite: insulation, presdwood, quartboard, lath, tempered presdwood, tempritile, cushioned flooring. (1935)](https://archive.org/details/MasoniteInsulationPresdwoodQuartboardLathTemperedPresdwood)

1. **[^](#cite_ref-3)** ["What is Pressboard and Pressed Wood? | Definition of Pressboard and Pressed Wood"](https://kitchencabinetkings.com/glossary/pressboard-pressed-wood/). *Kitchen Cabinet Kings*. Retrieved August 1, 2021.

1. **[^](#cite_ref-4)** ["The History of Masonite"](https://web.archive.org/web/20111020213919/http://www.masonite.com/masonite_history.php). Archived from [the original](http://www.masonite.com/masonite_history.php) on October 20, 2011. Retrieved September 2, 2011.

1. **[^](#cite_ref-5)** Bhel (January 1, 2003). [*Transformers*](https://books.google.com/books?id=rWgarr659pgC&dq=Pressboard&pg=PA52). Tata McGraw-Hill Education. [ISBN](/source/ISBN_(identifier)) [978-0-07-048315-6](https://en.wikipedia.org/wiki/Special:BookSources/978-0-07-048315-6).

1. **[^](#cite_ref-6)** Staff, British Standards Institute (February 15, 1998). [*Insulating Liquids. Oil-Impregnated Paper and Pressboard. Determination of Water by Automatic Coulometric Karl Fischer Titration*](https://books.google.com/books?id=auziPAAACAAJ). B S I Standards. [ISBN](/source/ISBN_(identifier)) [978-0-580-29356-6](https://en.wikipedia.org/wiki/Special:BookSources/978-0-580-29356-6).

1. **[^](#cite_ref-7)** Harlow, James H. (May 16, 2012). [*Electric Power Transformer Engineering, Third Edition*](https://books.google.com/books?id=h2Es9vpaKhQC&q=Pressboard). CRC Press. [ISBN](/source/ISBN_(identifier)) [978-1-4398-5629-1](https://en.wikipedia.org/wiki/Special:BookSources/978-1-4398-5629-1).

1. **[^](#cite_ref-Akers,_1966,_p._x_8-0)** Akers, 1966, p. x

1. **[^](#cite_ref-9)** ["1925 - Masonite Europe"](https://web.archive.org/web/20090805131331/http://www.masonite-europe.com/netbuildpro/process/23/1925.html). Masonite Europe. Archived from [the original](http://www.masonite-europe.com/netbuildpro/process/23/1925.html) on August 5, 2009. Retrieved September 23, 2009.

1. **[^](#cite_ref-10)** SouthBear (March 23, 2002). ["William H. Mason: The Man Who Went to Lunch"](https://web.archive.org/web/20120413201500/https://www.southbear.com/hometowns/laurel/laurel_history/Masonite.html). Archived from [the original](http://www.southbear.com/hometowns/laurel/laurel_history/Masonite.html) on April 13, 2012. Retrieved February 24, 2012.

1. **[^](#cite_ref-11)** ["The History of Masonite"](https://web.archive.org/web/20111020213919/http://www.masonite.com/masonite_history.php). Archived from [the original](http://www.masonite.com/masonite_history.php) on October 20, 2011. Retrieved September 2, 2011.

1. **[^](#cite_ref-12)** Hagerty, James R. (December 21, 2018). ["Robert Rasmus Survived Combat in Germany and a Violent Strike in Mississippi"](https://www.wsj.com/articles/robert-rasmus-survived-combat-in-germany-and-a-violent-strike-in-mississippi-11545406200). *Wall Street Journal*.

1. **[^](#cite_ref-13)** Siler, Julia Flynn (October 1988). ["COMPANY NEWS; USG to Get $400 Million for Masonite"](https://www.nytimes.com/1988/10/01/business/company-news-usg-to-get-400-million-for-masonite.html). *The New York Times*.

1. **[^](#cite_ref-14)** [U.S. Patents 1,578,609](http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=1578609) and [1,586,159](http://patft.uspto.gov/netacgi/nph-Parser?patentnumber=1586159).

1. **[^](#cite_ref-15)** Wingfield, Baker; Naffziger, T. R.; Whittemore, Edward Richard; Overman, Charles Beatty; Sweeney, Orland Russell; Acree, Solomon Farley (1936). [*Production of Pressboard from Cornstalks*](https://books.google.com/books?id=nKm-aa3f_EoC&dq=Pressboard&pg=PP4). U.S. Government Printing Office.

1. **[^](#cite_ref-16)** ["Joan Miró: Painting and Anti-Painting 1927-1937"](http://www.moma.org/interactives/exhibitions/2008/miro/flashsite/). *Online exhibition catalogue*. MoMA. Retrieved April 25, 2012.

1. **[^](#cite_ref-17)** [Christie's, Louis Valtat, "Child on the Carpet", 1910](http://www.christies.com/lotfinder/paintings/louis-valtat-enfant-sur-un-tapis-5074173-details.aspx?from=searchresults&intObjectID=5074173&sid=dd291b13-1ae2-492e-a389-26ba0d85266d)

1. **[^](#cite_ref-18)** ["How Movers Prepare and Protect a Home"](http://www.moversville.com/how-to-move-tips/moving-and-loading/movers-prepare-protect-home). *moversville.com*. February 18, 2014. Retrieved June 24, 2016.

1. **[^](#cite_ref-19)** ["Jury finds International Paper's Masonite siding defective"](https://web.archive.org/web/20160304124341/http://www.thefreelibrary.com/Jury+finds+International+Paper%27s+Masonite+siding+defective.-a018674180). Thefreelibrary.com. September 13, 1996. Archived from [the original](http://www.thefreelibrary.com/Jury+finds+International+Paper%27s+Masonite+siding+defective.-a018674180) on March 4, 2016. Retrieved September 23, 2009.

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Adapted from the Wikipedia article [Masonite](https://en.wikipedia.org/wiki/Masonite) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Masonite?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.