▁small ▁trees , ▁rather ▁than ▁large ▁pieces ▁of ▁solid ▁dimensional ▁l umber , ▁which ▁requires ▁cutting ▁a ▁large ▁tree . ▁ ▁Dis adv antages ▁▁ ▁They ▁require ▁more ▁primary ▁energy ▁for ▁their ▁manufact ure ▁than ▁solid ▁l umber . ▁ ▁The ▁ad hes ives ▁used ▁in ▁some ▁products ▁may ▁be ▁to xic . ▁A ▁concern ▁with ▁some ▁res ins ▁is ▁the ▁release ▁of ▁formal de hy de ▁in ▁the ▁finished ▁product , ▁often ▁seen ▁with ▁u rea - form al de hy de ▁bond ed ▁products . ▁ ▁C ut ting ▁and ▁otherwise ▁working ▁with ▁some ▁products ▁can ▁expose ▁workers ▁to ▁to xic ▁comp ounds . ▁ ▁Some ▁engine ered ▁wood ▁products , ▁such ▁as ▁those ▁specified ▁for ▁interior ▁use , ▁may ▁be ▁we aker ▁and ▁more ▁pr one ▁to ▁hum id ity - indu ced ▁war ping ▁than ▁equivalent ▁solid ▁woods . ▁Most ▁particle ▁and ▁fi ber - based ▁bo ards ▁are ▁not ▁appropriate ▁for ▁out door ▁use ▁because ▁they ▁readily ▁so ak ▁up ▁water . ▁ ▁Properties ▁P lywood ▁and ▁O SB ▁typically ▁have ▁a ▁density ▁of ▁ 5 5 0 ▁- ▁ 6 5 0   kg / m 3 ▁ ▁( 3 5 ▁to ▁ 4 0 ▁pounds ▁per ▁cub ic ▁foot ). ▁For ▁example , ▁ 1 ▁cm ▁( 3 / 8 ") ▁p lywood ▁she ath ing ▁or ▁O SB ▁she ath ing ▁typically ▁has ▁a ▁weight ▁of ▁ 1 ▁- ▁ 1 . 2   kg / m 2 ▁( 1 . 0 ▁to ▁ 1