You can also build brick walls without mortar, some of them even contain insulation, you just need to plaster both sides and you're good to go. Porothern dry fi

You can also build brick walls without mortar, some of them even contain insulation, you just need to plaster both sides and you're good to go. Porothern dry fix is a good example I had the choice between aircrete and that for my house and went for good ol bricks instead