In this paper I investigate intergenerational transmission in religiosity among immigrants and natives, comparing families affiliating with Christianity, Islam or any other religious denomination in Germany. Thereby, I focus on the role of transmission opportunities and perceived benefits of religious transmission within and outside the family on the chance of successfully passing on religious attachment from parents to children. Furthermore, I investigate whether these factors contribute to explain group differences in the intergenerational transmission in religiosity. Using data from the Children of Immigrants Longitudinal Survey in Four European Countries (CILS4EU), my empirical results show that family characteristics and everyday interactions influence the strength of intergenerational secularisation, but they can only partly account for differences in divergent transmission patterns.