Dry rot species of fungi cause brown rot decay, preferentially removing cellulose and hemicellulose from the timber leaving a brittle matrix of modified lignin. The term "dry rot" is somewhat misleading, as both species of fungi "Serpula lacrymans" and "Meruliporia incrassata" require an elevated moisture content to initiate an attack on timber (28–30%). Once established, the fungi can remain active in timber with a moisture content of more than 20%. At relative humidities below 86 percent, growth of "Serpula lacrymans" is inhibited, but it can stay dormant at relative humidities down to 76 percent. These relative humidities correspond to equilibrium moisture contents
Bullers Wood School was transformed into a secondary school. A V-1 flying bomb hit the Bromley Day Commercial School for Girls base on "Wharton Street" in Bromley, so it moved to the Bullers Wood site. It became Bromley Girls' Technical High School for ages 14–17, and after buildings were added, it became Bromley Technical High School for Girls for ages 11–18. In 1968, it became a grammar school with its present name when under Kent Education Committee. It was known as Bromley Technical School for Girls (1958 definitely) before becoming Bromley Technical High School for Girls In April 1974 it was now under