When the compartment is filled with chalk the string in the coil becomes coated in the chalk.
How to use a chalk line for roofing.
Repeat this on both sides of the roof.
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Snap a vertical chalk line from the inside edge of the first shingle on the second row to the top of the roof and from the inside edge of the first shingle to the top of the roof.
Using or snapping off a chalk line is simple.
Fill your chalk box with blue chalk for general use.
You may need a measuring tape to set these points.
A chalk line is a very handy piece of kit when marking out on flat surfaces you can pick up a chalk line for less than 5 from most tool shops etc.
Marking straigh level lines with a spirit level can be a little tedious using a chalk line however can make things decidedly more simple.
The end of the chalk.
Every 5 inches make a new mark until you get to the rop of the roof.
The best way to load chalk into a chalk line.
Here is a quick guide on how to do it.
How to use a chalk line.
Tap the chalk box occasionally to settle the chalk.
Mark the two end points of the line you are trying to draw.
These chalk lines will serve as a guide for subsequent even numbered rows of shingles and odd numbered rows respectively.
You ll have a choice of red blue white or fluorescent chalk.