Draw Straight Line On The Floor

The problem is that the width at one end of the room is 290 cm while at the other end of the room is 295 cm so i assume that the walls are not straight.

Draw straight line on the floor.

Use a bubble level as you go to make sure the lines you re drawing are perfectly straight. If the wall is too long to snap the chalk easily kneel by the midpoint of the line and press it down to the floor with one hand. When any project calls for drawing a long straight line on a floor wall or similar flat surface a professional mechanic will use a chalk line. A chalk line can be as long as needed being.

Hardwood floor in. Place the level along the line. This video is about how to make a first straight lane during hardwood floor installation on concrete. If you re trying to paint along the line where your walls and ceiling meet you can skip this step.

If the bubble goes to the center of the level between the 2 black lines your line is straight. Reach out with your other hand and lift up the chalk line about 10 to 12 inches from the floor pulling straight up then release the line so it snaps down onto the floor creating a crisp straight line.