In a filing with stock market regulator CMVM, Semapa said that Secil, through a fully owned subsidiary, now owns 50.5 per cent of Sibline.
The total cost of buying the 50.5 pct stake was US$65.1m, corresponding to a US$128.9m equity value and a US$174.4m enterprise value.
The deal has an enterprise value/EBITDA multiple of 7.45, based on estimated 2006 EBITDA, Semapa added.
Sibline produces 950,000t of clinker annually and 1.2Mta of cement. The company also operates in ready-mixed concrete through affiliate Soime.