How many layers of welding are not closed to the balcony railing

It is best to use SBS coil to do it, which has a long construction time, and the linoleum is easy to crack in winter. If the roof treated with special materials wears a waterproof coat, the water hits the wall and rolls down as water droplets, which has the effect of water droplets similar to lotus leaves, and the wall will always be in a dry state, with excellent waterproof, mildew-proof, anti-pan alkali, and weatherproof. It prevents the growth of moss and keeps the surface clean.

Whether you need to do lightning protection grounding, you should look at the geographical location of the villa, whether there are tall buildings around, if there is and can protect it, you don't need to do it;If the villa area is located on higher ground, it is best to install grounding. Because lightning induction is the same as direct lightning, it is also a type of lightning disaster.

The net distance of the railing shall not be greater than 110mm, and the top surface of the railing shall not be less than 1050mm from the treadable height. These are all clearly stipulated in the GB50368-2005 "Code for the Design of Residential Buildings".

Balcony railings don't need to think about grounding protection! The reason is that it is an independent body, and it is not connected to a large area of metal, so the possibility of receiving lightning strikes is very small! It does not pose a threat to people.

Since it is called a balcony, it should be full of sunshine and yang, ventilation, of course, it is not closed, and a little balcony is not very safe, it is generally made of glass, you think about it for a long time, glass and aluminum alloy are easy to age, not to mention when children are crazy, I dare not guarantee that it is foolproof, how dangerous it is if the glass falls, my home is also closed with glass, I regret it now,.