How much do architectural shingles weigh per square?
Short answer. Most standard architectural shingles weigh roughly 200 to 300 pounds per square (100 square feet); a common line like GAF Timberline HDZ comes in around 210 pounds, at about 70 pounds per bundle. Premium and designer shingles run heavier, often 300 pounds or more per square, so check the spec sheet for your exact product.
Where to find the exact number
Multiply the bundle weight by the bundles per square. Both are printed on the wrapper or listed on the manufacturer's product data sheet, often as an approximate weight per square. Retail listings sometimes show bundle weight too.
Why weight matters
- Framing: houses are framed to carry a roof covering plus loads like wind and occasional snow. One layer of architectural shingles is well within normal design. Adding a second layer over the first doubles the shingle weight, one reason many roofers avoid overlays.
- Delivery: a 30 square roof is several tons of shingles. Suppliers often load them onto the roof with a conveyor, spread across the ridge so the weight is distributed.
- Tear-off and disposal: the old roof weighs about as much as the new one plus underlayment and nails, which sizes the dumpster and disposal fees.
- Hauling it yourself: at about 70 pounds a bundle, a half-ton pickup's payload is used up quickly.
Heavier is not automatically better
Weight reflects how much asphalt and granule material is in the shingle, and heavier designer shingles do have thicker profiles. But wind performance depends on the sealant and nailing zone design, and impact resistance depends on the rating, not the scale. Compare ratings first and weight second.
If your roof already has two layers, see roofing over existing shingles; to estimate how many squares your roof has, see how roofers measure a roof.