Balbriggan were the only winners on a day in Dublin when the rain was never too far away. A superb display by the bowling unit exploited the helpful conditions to great effect as Malahide were bundled out for 94.
Sam Willemse (4-20), Dylan Lues (3-15), and Matt Pollard (2-23) doing the damage at the Jack Harper Ground.
A revised target of 58 in 20 overs saw the home side lose four wickets but get over the line thanks to double figure contributions from Greg Ford (18*), Farooq Nasr (14) and Chris de Freitas (13). They go into Sunday's All-Ireland T20 final with their title defence still very much a possibility.
David Delany took two wickets in eight balls to hint at what could have been as Railway Union's chase of Clontarf's 183 lasted only eight balls before the elements intervened.
He had earlier top-scored with 40 as the Clontarf top four all got starts. Skipper Eoghan Delany (38), opener Ryan Karunakaran (30), and PJ Moor (25) in the runs, while there were two wickets apiece for Brandon Kruger and Hamza Maan.
Railway are back in action on Sunday when they take on YMCA.
Leinster still top the table after their game against The Hills was abandoned just six overs short of the 20 required to make a match.
Saqib Bahadur took five wickets as the home side threw away a good start by Cormac McLoughlin-Gavin (53) and Murray Commins (30) to slump from 93 for 1 to 140 all out - three wckets too for Devder Ranolia.
Michael Hogan's unbeaten 29 helped them to 48 for 2 before the weather had the final say with 14 overs gone.
Merrion stay looking over their shoulder anxiously after their match with YMCA was another that didn't get completed.
John Anderson top-scored with an even time 84 (8 fours, 2 sixes) adding 85 for the fifth wicket with Niranjan Shankar (31*), having earlier put on 62 for the fourth with Sam Harbinson (36).
A total of 218 for 7 in 44 overs was a decent one in the conditions, but we will never know if it was enough as the game was abandoned with the Claremont Road side on 17 for 0 in the 3rd over when the stumps were pulled.