Home repairs.

For this purpose, it is necessary to build a grid of metal profiles.

To carcass construction, it is necessary to draw a straight line on the floor, ceiling or wall, with using a laser.

Fasten the c shaped profils, using  screws on this  straight line.

In this way.

Next, stretch the string to align profile,and fasten them using the fasteners.

Then the use of glass wool.

After the crates, fasten panels to the frame.

 That's all.