PetworthRenovationRestaurants Some Workers Welding At Sweet Mango Cafe by Prince Of Petworth June 15, 2008 at 10:37 pm 4 Comments DSCN0507, originally uploaded by Prince of Petworth. Hmm, I’m not really sure what was going on. They were welding some beams on the roof deck. So what does this mean are they going to double deck the roof deck? Add some walls? A roof? What do you think the purpose is?