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.
Draw straight line on the floor.
Pull the line very taut and the hold the line down on the mark with one hand.
Place the level along the line.
Hardwood floor in.
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.
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.
A chalk line can be as long as needed being.
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.
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.
Hi all i have to draw a straight line on a floor before i put tiles.