Nov 15 (Reuters) - Duluxgroup Ltd DLX.AX :
* "expect that 2018 net profit after tax will be higher than 2017 equivalent of $142.9 million'
* New housing construction, which accounts for about 15 pct of Duluxgroup revenue, is expected to remain relatively strong in 2018
* Commercial and Engineering markets, accounting for about 15 pct of revenue, expected to provide solid growth overall in 2018