Glasgow was swinging now and Lenster soon got across the line again, while Prop Clarkson fed, despite the attention of a warriors clutch in the back of a Scrum.
Sheehan added another attempt in the middle of the time, connecting behind a Ruck after alignment near the line, to give the Irish side a 20 -point advantage in the range.
The gap would have been wider if the arrest was more accurate with the boot, but with Glasgow stuck in its half after the restart, the midfield did not make any mistakes after Osborne plunged to his second attempt near the posts.
Half of the replacement Frawley fly added another attempt in the corner before weaving Dobie and Tuipulotu finishes, made the score more respectable for visitors.
Leinster: Jimmy O’Brien; Tommy O’Brien, Jamie Osborne, Jordie Barrett, James Lowe; SAM PRESERGAST, JAMISON GIBSON-PARK; Andrew Porter, Dan Sheehan, Thomas Clarkson, Joe McCarthy, James Ryan, Ryan Baird, Scott Penny, Jack Conan (captain).
Substitutions: Ronan Kelleher, Jack Boyle, Rabah Slimani, RG Snyman, Max Deegan, Luke McGrath, Ross Byrne, Ciaran Frawley.
Glasgow Warriors: Josh McKay; Kyle Steyn (captain), Sione Tuipulotu, Tom Jordan, Kyle Rowe; Adam Hastings, George Horne; Jamie Bhatti, George Hiddleston, Fin Richardson, Alex Samuel, Scott Cummings, Usan Ferrie, Rory Darge, Henco Venter.
Substitutions: Johnny Matthews, Rory Sutherland, Sam Talakai, Max Williamson, Jack Mann, Macenzzie Duncan, Stafford McDowall, Jamie Dobie.
Arbitrator: Andrea Piardi (Italy).
