Most asphalt shingles come three bundles to a square, so one bundle covers about 33 square feet of roof. That’s the number for standard three-tab and architectural (also called dimensional) shingles, which is what goes on nearly every asphalt reroof in San Diego. Heavier premium and designer shingles are the exception: they run four or even five bundles per square, because each bundle covers less to keep the packages light enough to carry. Before you buy or check a supplier’s count, confirm which shingle line you’re using, because the bundles-per-square number is printed right on the wrapper.
A “square” is roofing shorthand for 100 square feet of roof surface. Suppliers sell shingles by the bundle, but roofers price and measure the job by the square. Knowing that three bundles fill one square is the fastest way to translate a materials list into an actual roof, and to sanity-check whether a quote ordered enough.
How many bundles of shingles are in a square?
Three bundles make one square for standard shingles, which covers 100 square feet. Each of those bundles is packaged to cover roughly 33.3 square feet. Multiply out and the math is clean: 3 bundles × 33.3 sq ft = 100 sq ft = one square.
The exceptions matter when you’re pricing a specific product. Luxury laminate and designer shingles, the thick multi-layer lines like GAF Grand Sequoia or CertainTeed Grand Manor, weigh far more per shingle. Manufacturers split a square into four or five smaller bundles so a worker can still lift one safely. If your reroof spec calls for a designer shingle, plan on four bundles per square as a rule of thumb and read the coverage on the wrapper to be exact. For everything else, three is the working number.
How many shingles are in a bundle?
A bundle holds about 21 to 29 shingles, depending on the type. Three-tab shingles are smaller and pack around 26 shingles per bundle. Architectural shingles are larger and thicker, so a bundle usually holds 21 to 26. The count moves with the brand, but the coverage does not: three bundles still cover a square whether that’s 63 architectural shingles or 78 three-tab pieces.
This is why counting individual shingles is the wrong way to estimate a roof. Coverage per square is the number that stays consistent across products, so measure in squares and let the bundle count follow.
How many square feet does a bundle of shingles cover?
One standard bundle covers about 33 square feet. That figure holds for three-tab and standard architectural shingles, the two types that account for almost every asphalt roof in San Diego County. A designer shingle bundle covers less, closer to 20 to 25 square feet, which is the flip side of needing four or five bundles to finish a square.
To go the other direction, divide your roof’s square footage by 33 to get the raw bundle count, then round up. A 1,500 square foot roof needs roughly 46 bundles before waste. Most people find it easier to work in squares first: 1,500 sq ft is 15 squares, and 15 × 3 = 45 bundles, then add for waste.
How much does a bundle of shingles weigh?
A bundle of asphalt shingles weighs 50 to 80 pounds. Three-tab bundles land near the light end, roughly 50 to 65 pounds. Architectural bundles are heavier, usually 65 to 80 pounds, and premium designer bundles can top 80. A full square, three bundles, adds up to 150 to 240 pounds sitting on 100 square feet of roof.
Weight is not just a delivery detail in San Diego. If you’re switching from a light three-tab roof to a heavy tile system, or the reverse, the load on your framing changes and a structural check is part of a responsible reroof. Weight is also why crews stage bundles across the roof deck rather than stacking a whole pallet in one spot, and why they carry them up one at a time.
How much does a bundle of shingles cost?
Material only, a bundle of standard architectural shingles runs about $35 to $55 at 2026 San Diego supplier prices, so a square of shingles is roughly $105 to $165 before anything else. Three-tab bundles are cheaper, and designer shingles cost more per square because you’re buying four or five bundles of a premium product.
That material figure is a small slice of an installed roof. The bundle price doesn’t include underlayment, drip edge, valley metal, ridge venting, tear-off, disposal, labor, or the permit. Our San Diego cost-per-square breakdown walks through what fills the gap between a $150 square of shingles and an installed price, and the full new-roof cost guide puts real 2026 numbers on a complete replacement.
Worked example: bundles for a San Diego reroof
Say you have a single-story San Diego home with about 20 squares of roof, which is a common size for a 2,000 square foot house. Standard architectural shingles at three bundles per square means 60 bundles to cover the field. Then you add waste.
Waste covers starter rows, ridge caps, and every cut around hips, valleys, dormers, and skylights. Plan on 10 percent for a simple gable roof and up to 15 percent for a cut-up roof with lots of angles. On the 20-square example, 10 percent waste brings the order to about 66 bundles. A steep or complex roof pushes it toward 69. San Diego’s older tract and hillside homes tend to have more hips and valleys than a clean gable, so the higher waste factor is often the safer bet.
If you want to nail down your own square count before ordering, our guide to roofing squares for a 2,000 sq ft house shows how footprint and roof pitch change the number, since living area and roof area are rarely the same.
Frequently asked questions
How many bundles of shingles are in a square?
Three bundles for standard three-tab and architectural shingles, which together cover 100 square feet. Heavier premium and designer shingles take four or five bundles per square, so the exact number is printed on the wrapper. Three is the working number for almost every asphalt roof in San Diego.
How many shingles are in one bundle?
About 26 for three-tab shingles and 21 to 26 for architectural, so a bundle holds roughly 21 to 29 shingles depending on the brand and style. The count varies, but three bundles always cover a square regardless of how many individual pieces that is.
How many square feet does a bundle of shingles cover?
Around 33 square feet for a standard bundle. Three of them cover a full 100 square foot square. Designer shingle bundles cover less, closer to 20 to 25 square feet, which is why they come four or five to a square.
How much does a bundle of shingles weigh?
A bundle weighs 50 to 80 pounds. Three-tab bundles are lighter, around 50 to 65 pounds, and architectural bundles run 65 to 80. A full square of shingles weighs 150 to 240 pounds.
How many bundles do I need for a 2,000 sq ft roof?
A single-story 2,000 square foot home is roughly 20 squares of roof, so about 60 bundles of standard shingles plus 10 to 15 percent for waste, which puts a typical order near 66 bundles. A two-story home with the same living area has a smaller roof footprint and needs fewer.
Should I buy extra bundles for waste?
Yes. Add 10 percent on a simple gable roof and up to 15 percent on a complex roof with many hips, valleys, and dormers. Waste covers starter courses, ridge caps, and cuts. Buying from the same production run also gives you matching spares for future repairs.
Not sure how many squares your roof actually is? We connect San Diego homeowners with vetted local roofers who measure the roof for real, spell out the material count, and give a free, upfront quote you can compare honestly. Call (760) 750-5557 to schedule a free roof inspection or talk through a full roof replacement. Before you sign with any contractor, verify their CSLB license at cslb.ca.gov so you know who’s on your roof.