ɪn nˈaɪntiːnhˈʌndɹɪd θˈɜːɾi nˈaɪn, wˌɛn ðə pɹədˈʌkʃən hæd ɛkspˈændᵻd tʊ ɪŋklˈuːd flˈoːɹz ænd kˈɪtʃənz ænd ðə θɹˈɛt ʌv wˈɜːld wˈɔːɹ ɹˌoʊmən tˈuː wʌz kˈɔːzɪŋ ɐ dᵻklˈaɪn ɪnðə bˈɪldɪŋ ˈɪndʌstɹi, hiː kənsˈɪdɚd ɔːltˈɜːnətˌɪvz ænd paɪənˈɪɹd ðə dɪvˈɛləpmənt ʌv nˈuː tˈɪmbɚ mətˈɪɹiəlz fɚðə pɹədˈʌkʃən ʌvðə bɹˈaɪnziːl kˈɪtʃən ænd fɔːɹ bˈoʊt kənstɹˈʌkʃən.
In 1939, when the production had expanded to include floors and kitchens and the threat of World War II was causing a decline in the building industry, he considered alternatives and pioneered the development of new timber materials for the production of the Bruynzeel kitchen and for boat construction.