Roof Line Not Straight

After your floor is straight it is time to concentrate on the next floor s ceiling.

Roof line not straight.

This droopiness could be caused by moisture and ventilation problems. If you can see a dip curve or swag on the peak when standing in the street your roof has a problem. Use the chalk line to snap a straight line vertically every 6 inches. This will be the bottom of your board.

Use your chalk and tape measure to mark about 12 inches up on the roof for the first set of shingles. Repeat this on both sides of the roof. Sometimes you can adjust gutters and vents for a more uniform appearance. At other times the gutters may need to stay where they are so gravity can do its work.

Screw it into the wall and repeat this on the opposite wall. Every 5 inches make a new mark until you get to the rop of the roof. It might be something basic you can handle yourself but. The end of the line is 4 inches from the lower edge of the roof which is standard exposure.

Ask an assistant to hold the end of a chalk line on the first shingle at the longest edge of the roof. It is probably feasible to straighten up the roof line a bit when the metal roof is installed. Run your string line from the nails and measure up from the string. The rotten wood may be because the sag has caused water to gather repeatedly in that area.

It also may just be due to structural age or possibly a defect in the original structure. Sometimes an uneven roof is simply a sign of minor errors or aberrations in construction.