It said the increased facility will also provide the group with additional acquisition finance for further target businesses it has identified.
The construction materials group said the key terms of the increased facilities remain broadly similar to its originally agreed Santander Credit Facility.
The company said it will use the facility to purchase the 6% CLNs, due January 2022, having seen a written resolution accompanying its recent tender offer for them passed by over 75% of noteholders.
It added that it is the company’s intention to then delist the CLNs from The International Stock Exchange, where they are listed, as soon as practicable.
Commenting on the move, SigmaRoc’s CEO Max Vermorken, said: “The refinancing of the CLNs significantly reduces potential shareholder dilution and demonstrates confidence in our business and the ability of those who work here."