Preparation before construction of exterior wall coating

This paper will introduce the preparation work before the construction of exterior wall coating, including the requirements of base material, crack treatment, coating quality, confirmation of model wall, rust prevention treatment of scaffolding and iron parts.

Basement requirements

Plastering at the grass-roots level has been completed and maintained for about 20 days, and the alkaline PH value at the grass-roots level is below 9. At the same time, the base has been dry (at least 15 days) and the humidity is below 8%. The surface of the grass-roots level is smooth, the angle of yin and yang is dense and distinct; There are no structural problems such as water seepage, cracks, hollowing and bubbles on the wall surface. No loose powder, no oil, grease and other adhesion.

Gap treatment

The reserved seam of the external wall has been sealed.

Coating quality

The paint used has the factory certificate and meets the requirements of relevant national codes and standards after inspection.

Template wall confirmation

The paint used is approved by the owner, and the model wall is also approved by the owner, supervisor and design unit.

scaffold

Decorative scaffolding has been set up.

Rust prevention treatment of iron parts

The exposed iron parts at the grass-roots level have been properly rusted.