How To Snap A Chalk Line For Roofing

The chalk will mark a straight line along the surface between the two points.

How to snap a chalk line for roofing. Even small moisture amounts will cause chalk dust lines as well as any black or lead pencil marks to permanently damage steel surfaces. This saved on nail holes. If you have a well functioning chalk snap line you can slowly play out the line without. First shake up the chalk inside your tool or add chalk if it does not have any.

Then hook one end of the chalk snap line to your beginning point. By bob vila using a chalk line is a quick way to give yourself a straight line as a building guide. 3 tabs i snap the same baseline then square off that for a vertical bond line then i measure over half the width of a tab and snap a parallel line. If i must past a obstruction i snap a line through higher and use it as a reference point for the shorter actual lines.

When it comes to the use of chalk near steel roofing and siding the following warning should have been added. Get your chalk reel. First snap a line for the top of the starter course whose bottom will be flush with the waterproof shingle underlayment wsu or felt underlayment which overhangs the drip edge by 1 2 inch. But then i work on a 4 12 roof so you may have to use nails to hold the free end on your 9 12 roof.

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. These chalk lines will serve as a guide for subsequent even numbered rows of shingles and odd numbered rows respectively. Never snap chalk lines on steel sheeting. Then snap lines for every course or every other course.

The line produced by the chalk snap line is fuzzy and sometimes hard to follow when cuttting along it. I snap a line for every other course. I snap chalk lines solo by wrapping the free end of the string on a brick and pulling tight on the other end. I too am a diyer and not a professional roofer.

Once you have the chalk line over the second mark lift off the string and allow it to snap back onto the surface.