Shingles are heavy
Step 1
It's printed on the shingle wrapper. Most squares take 3 bundles.
Step 2
80 × 3 = 240 lb
Example: one square of 80 lb bundles weighs 240 lb.
Step 3
25 sq = 3 tons
25 squares × 240 lb = 6,000 lb. That matches the 3 tons in a 20-yard.
Two layers?
Plan a 30-yard (4 tons) plus overage at $75 per ton, or two hauls.
Schedule it
Call (325) 241-7006