Soon after the
First World War, the original church was becoming too small for its congregation. In 1914,
Senghennydd was partitioned from Treforest, with the congregants from the area transferring to the new All Souls Church in Senghenydd, though overcrowding remained a problem at St Dubricius', with worshippers sometimes obliged to sit outside the door. Work began on the replacement church on Broadway in 1926, and it was consecrated on 24 November 1927 by Archbishop
Francis Mostyn. In the 1930s, the dedication was amended from Dubricius to Dyfrig. There was a reordering in the 1950s, when a new altar was installed. A life-sized crucifix and side-panels were added in 1999 by Penanne Crabbe. The church gained Listed status in 2001. The church is open during the week, and as the only Catholic church within easy distance of the
University of South Wales' Treforest campus, it is often attended by students during term time. ==References==