After all profiles are installed, you should go to the next phase, namely. Installation of drywall. Drywall sheets should be screwed to each of the existing profiles using a screwdriver. All this should be made at an angle of 90 degrees. Having finished on the one hand, you should take on the seal of the wall, but you should not overdo it, otherwise it may lead to fatal consequences. After sealing, the second part should also be screwed by drywall sheets.