Headwaters shareholders back Boral merger

Boral says 98 per cent of US building materials maker Headwaters' shareholders approve a merger of the companies, which is expected to be complete by mid-2017.

Shareholders of US building materials maker Headwaters Incorporated have approved a $US2.6 billion (A$3.4 billion) takeover bid by Boral.

Boral says 98 per cent of Headwaters shareholders voted in support of the takeover last Friday (US time).

The merger is expected to be completed, pending regulatory approval, by the middle of 2017.