Editing Lumber (section)

===Plastic lumber===
{{Further|Plastic lumber|Fiber-reinforced composite|Wood-plastic composite}}
Structural lumber may also be produced from recycled plastic and new plastic stock. Its introduction has been strongly opposed by the [[forestry]] industry.<ref>[http://www.volokh.com/sasha/resrec.html "Recycling and Deregulation: Opportunities for Market Development"] ''Resource Recycling,'' September 1996</ref> Blending fiberglass in plastic lumber enhances its strength, durability, and fire resistance.<ref>[http://www.astm.org/COMMIT/SUBCOMMIT/D2020.htm "ASTM D6108 – 09 Standard Test Method for Compressive Properties of Plastic Lumber and Shapes"] ''ASTM Committee D20.20 on Plastic Lumber''</ref> Plastic [[fiberglass]] structural lumber can have a "class 1 [[flame spread]] rating of 25 or less, when tested in accordance with [[ASTM]] standard E 84," which means it burns more slowly than almost all treated wood lumber.<ref>[http://www.strongwell.com/PDFfiles/Safdeck%20Safplank/SAFPLANK%20SAFDECK%20Fiberglass%20Decking%20Systems%20Brochure.pdf "SAFPLANK Interlocking Decking System"] {{webarchive|url=https://web.archive.org/web/20130426205658/http://www.strongwell.com/PDFfiles/Safdeck%20Safplank/SAFPLANK%20SAFDECK%20Fiberglass%20Decking%20Systems%20Brochure.pdf |date=2013-04-26 }} ''Strongwell.com''</ref>