Can the balcony at home be sealed with steel wire?

If it's your thing, if you can call the shots, even if you can tear it down, it's definitely okay to seal it, but whether there are potential safety hazards depends on the quality of your seal.

It can be sealed, and there are special ones for this aspect of installation.

No, what this designer considers, generally does not need to be closed.

At present, there are no laws and regulations, so according to the principle of "nothing prohibited by law, it can be done", as long as it is within the scope of the property rights registered in the property right certificate, the right holder has the right to legally dispose of his legal property. >>>More

Of course, it will be hot when sealed, because the infrared heat generated by sunlight is all in the small space of the sealed balcony, and it will be stuffy.