Hello everyone, I'm new to this forum and looking for advice. I'd like to install a door between my laundry room and garage. This means cutting an opening in the concrete block at the back of the garage, and through the framing in the laundry room. I'm thinking of renting a gasoline powered masonry saw for cutting out the blocks, and installing a steel lintel in the block, and a header in the framing. Right now I'm not sure which one is carying the load to the 2nd floor. Once I cut out the blocks, can I simply frame it with 2x6 or 2x8's or do I need to do anything special like adding concrete to the blocks that are cut halfway? Also, I thought I'd make the top horizontal cut first, install the steel lintel, then make the rest of the cuts. Thanks for your help.