Please give me a mortar mixture ratio for indoor plastering.

The selection of plastering mortar for interior wall is related to wall materials and environment. Generally, the corresponding atlas method will be clearly stated in the design, and the mixture ratio of mixed mortar in relevant parts can be found in the "Material Method" in the selected atlas.

Such as: interior wall 4 mixed mortar ● 15mm back 1: 1: 6 total thickness of cement lime mortar: 20 mm.

Wall (1) ● 5mm thick 1: 0.5: 3 cement lime mortar