But we're barricading the stairs to the second floor. I was under the assumption that we were pulling that heavy table to block the stairs so zombies won't be able to climb up and get us. 

Your plan might work better so let's go with that then. Let's just say we pulled that heavy table to the main door instead and me and Graham are throwing tables down from the second floor while you guys are blocking the windows and doors with the rest of the tables and chairs and shit. 

Also gives us more escape opportunities and loot opportunities too.