Hi all, I found a good guide on how to block-up and un-used fire place here http://www.practicaldiy.com/general-building/chimney/chimney-blocking-up.php to start with. However my job has one more complication being I need to install a TV bracket and a heavy shelf on the newly constructed fire place wall by using 6 x 8mm 50 mm long screws and plugs. I am concern that just using normal bricks as per link above, the wall would not take the load. Because of the shelf arrangement the load is not only vertical, there will be a lateral torque force as well. What brick should I use for the purpose / how to fit bricks and mortar to make the fireplace opening wall (about 70x70 cm) strong and load bearing? Many thanks!