Magna Green Manufacturers the Best Quality AAC Block Jointing Mortar. Our AAC Block Jointing Mortar is a non-sag, lightweight mortar that provides for an easier installation of AAC blocks. AAC Block Jointing Mortar Manufactures for ready mix joining of the bricks. Magna Green AAC Block Jointing Mortar has a High-Strength & quick firm lay of joint with AAC Blocks. Our Joint Mortar has a First Class fire rating and is easy to clean. Block Jointing Mortar durable and strong product that does not shrink, crack or deteriorate over time.