Because nails are purchased by the pound so can ask your supplier for the correct number of nails for your size roof in the length you specify.
How many pounds of roofing nails per bundle.
There are 63 shingles per standard bundle.
For regular three tab shingles this would require 320 nails per square.
Use this chart to determine how many fasteners there are per pound.
Roof material nail length pounds per square coils per square comp shingles smooth 1 1 33 2 63.
Some use five nails on the starter row.
This is based on 80 shingles per square.
Nails screws are sold by weight not quantity usually in 1 pound and 5 pound boxes.
You will need approximately 2 pounds of nails to install a square of shingles in regular conditions and about 3 pounds if you are dealing with windy conditions.
In high wind areas more will be needed.
This amounts to an average of 320.
That means 252 nails per bundle.
It takes four nails per shingle.
For high wind areas or when shingles are being applied to a mansard six nails per shingle are required 480 nails per square.