Deals of the day-Mergers and acquisitions

March 24 (Reuters) - The following bids, mergers, acquisitions and disposals were reported by 0930 GMT on Monday:

Fibre-cement maker James Hardie Industries JHX.AX said it will buy U.S. artificial decking maker AZEK AZEK.N for $8.75 billion, sending its shares tumbling amid analysts' concerns of overpaying for exposure to a sputtering U.S. housing market. nL3N3Q70BS

Australian miner Gold Road Resources GOR.AX has rejected a A$3.3 billion ($2.07 billion) buyout offer from South African peer Gold Fields GFIJ.J, the companies said. nL3N3Q70DI

Indian automaker Mahindra & Mahindra MAHM.NS is in talks to buy Japan's Sumitomo Corp's 8053.T entire 44% stake in heavy vehicle-maker SML Isuzu SMLI.NS, CNBC Awaaz reported, citing sources. nL3N3Q70IO