Before you go out and purchase your 3 tab shingles you will first need to figure out how many of them you will need.
How to staqple 3 tab roofing.
Starting at the racked shingles fill in the courses.
Wood shakes minimum 3 4 sheathing wood shakes nail type minimum length.
In areas with high winds it is common to drive two nails above each cutout line.
Bring a trash can up on the roof so you have a place to throw old shingles and flashing.
Horizontally end nails will be covered by up to about 1 2 of a tab of the shingle s above.
To estimate roofing materials start by finding the total square footage of the roof and divide the number by 100 to determine the number of squares in the roof.
The shingles will roll up like a ball in front of the fork.
Hammer in one nail about 2 inches from each end of each shingle and another nail about 1 inch above each cutout.
Align and install the 2 tab shingle aligned with the next 5 inch higher chalk line.
One square package is equal to 100 square feet of roof.
Make sure to keep nails out of the tar strip as you work.
Begin row 4 with a shingle cut in half 1 and tabs and complete that row.
If the nails in shingle b are too high.
Complete the row with 3 tab shingles.
You will simply need to add up the total square footage of your roof and divide it by 100.
Row 7 begins with a full 3 tab shingle.
Dimensional comp shingles over 3 tab 1 1 4 1 1 2 1 1 2 1 1 2 more than 1 layer of roofing not recommended over 3 8 sheathing.
Lastly multiply this number by 3 and you will know how many packs you need to buy.
Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square.
Push the shingles down to the roof jacks.
Next remove old shingles and flashing.
Align the 3 tab shingles with the horizontal lines and nail them in place.
Begin row 5 with the 1 tab shingle and row 6 with the 1 2 tab shingle.
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If the nails in shingle a are in the correct location if shingle a is lifted by strong winds the bond area between shingle a and b is protected since shingle a will flex below this point.
The next shingles above should cover the nails by about 1 inch vertically.
Remove shingles in a 2 to 3 ft wide section as you work down the roof.