A:AnswerWe bought the Epson 1440 for it had 4400 lumens but we also bought and Elite Ambient Light Rejecting(ALR) screen. Our living room is very bright and even with the special ALR screen we do loose some of the clarity and the picture fades. So with only a brick wall with lights on I would say that it could be done but your clarity would not be great. But to watch possibly a 110" screen(assuming that the brick wall is that big) would be awesome and fun to share with a group of people outside.