In most instances two separate shingles.
First row for roof.
Make sure you keep this first row straight using the ice and water shield as a guide.
Before you can begin setting asphalt shingles on your roof you must install a row of starter shingles.
Use your chalk and tape measure to mark about 12 inches up on the roof for the first set of shingles.
Work up from the initial row starting at the lower corner in a diagonal pattern staggering the shingles to prevent gaps.
Repeat this on both sides of the roof.
Begin your first row at the lower left corner of your roof.
Their very makeup does not a bad arrangement is likely they are a perfect roofing and how it can be improvements like a landscape work.
Snap a horizontal chalk line over the starting row to use as a guide.
Take a look at your current fungicidal.
Make sure this row has a slight overhang 1 4 to 3 8 in beyond the drip edge.
Before you install your first shingle use your utility knife to cut 6 inches off of the side then lay it on your roof allowing the architectural shingles to hang between 1 2 to 2 inches over the edge.
Use the chalk line to snap a straight line vertically every 6 inches.
Do not apply a roof underlayment over the ice and water shield directly unless required by the local building code.
The stories about using a spray replacing first row of shingles off the roof insulation does not breathe.
These shingles are instrumental in making sure the asphalt shingles are correctly laid out on your roof.
For the first row of shingles called a starter course or strip you cut the tabs off three tab shingles and apply them with the self sealing adhesive strip facing up along the eave.
Excellent for this purpose.
Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails.
Every 5 inches make a new mark until you get to the rop of the roof.
Most shingles are nailed down with four nails but the first row of shingles are usually double stacked and may have six or more nails holding them in place.
Start at the eave area just over the ice and water shield with a three inches of overlap about 3 and work your way up.