1,500 sq ft 6/12 Roof — Architectural (dimensional) shingles Estimate

How many bundles of Architectural (dimensional) shingles for a 1,500 sq ft (footprint), 6/12 pitch roof with simple gable waste? 56 bundles (18.45 squares). Installed cost $6,457–$12,913.

Roof dimensions

Floor-plan footprint

Roof pitch (rise/12)

Material & waste

Roofing material

Roof complexity (waste factor)

Total bundles

18.4

Roofing squares

1,677

Actual roof sq ft

5,903

Total weight (lbs)

Slope factor: 1.1180Waste: +10%Dead load: 3.5199999999999996 psf

Footprint area	1,500 sq ft
Actual roof area	1,677 sq ft
With waste (10%)	1,845 sq ft
Roofing squares	18.4
Main bundles	56
Starter bundles	1
Ridge cap bundles	1
Total bundles	58
Total weight	5,903 lbs (2.68 t)
Eave linear ft (est.)	77 lf

Architectural (dimensional) shingles — 1,500 sq ft quantities

Order 56 bundles minimum. Total with starter/ridge: 58 bundles for asphalt.

Item	Value	Note
Footprint area	1,500 sq ft	Floor plan measurement
Slope factor	1.1180	6/12 pitch
Actual roof area	1,677 sq ft	After pitch adjustment
Waste allowance	10%	Simple gable
Total w/ waste	1,845 sq ft	Amount to order
Roofing squares	18.45	1 square = 100 sq ft
Bundles (Architectural (dimensional) shingles)	56	3 bundles/square
Starter strip	1 bundle(s)	≈ 77 lin ft eave
Ridge cap	1 bundle(s)	≈ 19 lin ft ridge
TOTAL bundles	58	Main + starter + ridge

Architectural (dimensional) shingles — cost estimate for 1,500 sq ft

18.45 squares. Costs are US national averages (RSMeans 2024). Regional variation ±30%.

Cost scenario	Total	Rate used
Material only (low)	$1,845	$100/sq
Material only (mid)	$2,767	$150/sq
Material only (high)	$4,058	$220/sq
Installed — low estimate	$6,457	$350/sq — simple job, off-peak
Installed — mid estimate	$9,224	$500/sq — typical
Installed — high estimate	$12,913	$700/sq — complex roof, peak season

Architectural (dimensional) shingles — roof weight and structural load

Standard residential roof framing is typically designed for 10–15 psf dead load. This material is within standard framing capacity.

Material	Weight/square	Total weight	Dead load (psf)	Structural class
Architectural (dimensional) shingles	320 lbs/sq	5,903 lbs	3.5 psf	medium
Architectural shingles (ref)	320 lbs/sq	5,903 lbs	3.5 psf	medium

1,500 sq ft footprint — bundle count by pitch

A 12/12 pitch requires 1.26× more material than a 6/12 pitch for the same footprint.

Pitch	Slope factor	Actual area	Bundles
3/12	1.0308	1,546 sq ft	52 bundles	-
4/12	1.0541	1,581 sq ft	53 bundles	-
5/12	1.0833	1,625 sq ft	54 bundles	-
6/12	1.1180	1,677 sq ft	56 bundles	← current
7/12	1.1577	1,737 sq ft	58 bundles	-
8/12	1.2019	1,803 sq ft	60 bundles	-
10/12	1.3017	1,953 sq ft	65 bundles	-
12/12	1.4142	2,121 sq ft	71 bundles	-

All roofing options — 1,500 sq ft / 6/12

Costs vary by region ±30%. Only materials rated for 6/12 pitch are shown.

Material	Category	Quantity	Installed cost (mid)	Lifespan
Architectural (dimensional) shingles	Asphalt	56 bundles	$9,224	25–50 yrs	← selected
3-tab asphalt shingles	Asphalt	56 bundles	$6,457	15–25 yrs	-
Standing seam metal roofing	Metal	19 bundles	$20,292	40–70 yrs	-
Corrugated metal roofing (exposed fastener)	Metal	19 bundles	$9,224	25–40 yrs	-
Wood shakes	Wood	74 bundles	$19,370	20–40 yrs	-
Cedar shingles	Wood	74 bundles	$16,603	20–35 yrs	-
Natural slate	Tile	19 bundles	$46,119	75–200 yrs	-
Clay tile	Tile	19 bundles	$27,671	50–100 yrs	-
Concrete tile	Tile	19 bundles	$17,525	30–50 yrs	-

Waste factor impact — 1,500 sq ft / Architectural (dimensional) shingles

Always use the correct waste factor for your roof style — under-ordering is the most expensive mistake.

Roof style	Waste %	Total area	Bundles	Installed cost (mid)
Simple gable	10%	1,845 sq ft	56 bundles	$9,224	← current
Hip roof	15%	1,929 sq ft	58 bundles	$9,643	-
Complex (dormers/valleys)	20%	2,012 sq ft	61 bundles	$10,062	-
Very complex	25%	2,096 sq ft	63 bundles	$10,482	-

Roofing calculation — step-by-step formula

\text{bundles} = ⌈(\text{footprint} × √(\text{rise}² + \text{run}²)/\text{run} × (1 + \text{waste})) / 100 × \text{bundlesPerSquare}⌉

Architectural (dimensional) shingles — 6/12 pitch — quantities by home size

Architectural (dimensional) shingles at 3 bundles/square, 6/12 pitch.

Footprint	Actual area	Squares	Bundles	Installed cost (mid)
500 sq ft	559 sq ft	6.15	19	$3,075	-
750 sq ft	839 sq ft	9.22	28	$4,612	-
1,000 sq ft	1,118 sq ft	12.30	37	$6,149	-
1,200 sq ft	1,342 sq ft	14.76	45	$7,379	-
1,500 sq ft	1,677 sq ft	18.45	56	$9,224	← this estimate
1,750 sq ft	1,957 sq ft	21.52	65	$10,761	-
2,000 sq ft	2,236 sq ft	24.60	74	$12,298	-
2,500 sq ft	2,795 sq ft	30.75	93	$15,373	-
3,000 sq ft	3,354 sq ft	36.90	111	$18,448	-
3,500 sq ft	3,913 sq ft	43.04	130	$21,522	-

Sources & Standards

International Code Council. "International Residential Code for One- and Two-Family Dwellings." 2024 Edition.Building code requirements for concrete, framing, and structural calculations
American Concrete Institute. "Building Code Requirements for Structural Concrete (ACI 318-19)."Concrete mix ratios, strength requirements, and reinforcement standards