Killimordaly possessed too much scoring craft for a gallant Four Roads side in extremely testing conditions at Athleague.
The Roscommon champions produced a commendable effort but the favourites found scores much easier to come by and were full value for their victory.
Niall Earls' accuracy from frees – the corner-forward scored three points from placed balls, as well as three more from play – helped Killimordaly to a 0-8 to 0-6 interval advantage.
Keith Kennedy and Declan Connolly were prominent in general play for the Galway champions as Eanna Ryan, Andrew Daly, Connolly and Conor Daly also found the target, making light of the wind and rain.
Four Roads, by contrast, lacked a physical presence in attack and had to rely on the free-taking exploits of Shane Curley and Enda Rogerson for their scores.
Killimordaly upped the ante after the break and four points from the stick of sharpshooting wing-forward Paul Madden from play confirmed his side as provincial kingpins.
SCORERS – Killimordaly: N Earls 0-6 (3f), P Madden 0-4, E Ryan 0-2, A Daly, D Connolly, C Daly, J McDonagh 0-1 each. Four Roads: E Rogerson (2f) 0-3, S Curley (2f), P Kelly 0-2 each, J Lawlor, J Coyne, M Kelly (f) 0-1 each.
KILLIMORDALY – P Kilkenny; C McDonagh, P Monaghan, A Lawless; P Concannon, K Kennedy, D Concannon; C Daly, T Madden; P Madden, D Connolly, E Ryan; N Earls, J McDonagh, A Daly. Subs: N Daly for Monaghan (40), S Concannon for Daly (45), C Earls for McDonagh (55).
FOUR ROADS – D Dowd; S Curley, C Dowd, B Donnelly; J Moran, P Kelly, J Rogerson; M Kelly, J Lawlor; E Mulry, C Dolan, D Dolan; E Rogerson, J Coyne, R Kelly.
Subs: D Fallon for Lawlor (43), C Mulry for R Kelly (56).
REF – S Hourigan (Limerick).