What are the rules for punching holes in external walls?

What are the rules for punching holes in external walls?

It is best not to punch holes in the concrete on the exterior wall, nor to punch holes directly above or below the window. When drilling holes in the wall, the drill must be steady, and don't shake it from side to side, otherwise it will increase the friction of the drill. When drilling, you must find a professional drilling company or personnel. Unskilled technicians are likely to cause damage to the wall and accidents may occur.

How to drill the outer wall

1. When drilling, you can choose electric drill, pick, electric hammer, etc. They all need the cooperation of suitable drill bits to complete the drilling task.

2. When drilling, be sure to keep it perpendicular to the drilling surface, hold the electric drill tightly with both hands to ensure the stability of the electric drill, draw the drilling position with a pencil, and select the appropriate expansion screw.

3. The expansion screw is too small and falls directly into the hole, so it can't be fixed.

4. Drive the expansion screw into the drilling hole with a hammer, pay attention to protect the thread of the expansion screw, and finally complete the drilling.

How much does it cost to punch holes in the outer wall?

1. The general cost of wall drilling is about 50 for dry drilling and 20 for water drilling. It should be noted that the standard of this fee is the size of the air conditioning hole. If the volume of the wall hole increases, the corresponding cost will also increase.

2. Perforation of concrete wall: dry perforation is about 80, and water perforation is about 50, but concrete wall is relatively rare. Generally speaking, concrete refers to ground punching, which requires better punching materials, which is not only time-consuming and laborious, but also water punching.

3, cement wall drilling: dry drilling is about 40, and rhinestones are about 20. Now there are no cement walls in high-end residential areas and new floors, unless they are self-built partitions.

4. Special wall punching: Sometimes the punching position is a bit special. For example, punching holes in beams is used to penetrate things, and sometimes it is necessary to cut the wall. The cost of these holes can't be calculated by the general cost standard, but will be calculated according to the difficulty of the builder's operation and the wear degree of the tools.