Get bundles, starter, drip edge and ridge cap for a shingle roof.
How it works
Footprint plus overhang × slope multiplier gives area. Add waste, divide by 100 for squares and multiply by bundles per square.
Before you order
- Hips and valleys add cuts, so choose the higher waste figure.
- Keep one extra bundle for repairs.
- Have shingles delivered to the roof if the seller offers it.
Common questions
How many bundles are in a square?
Three for most shingles, and up to four or five for heavy lines.
How much waste should I add?
About 10% for simple gables and 15% with hips or valleys.