Cost guide · Updated October 2026
2026 Roof Replacement Cost in St. Louis, MO
A new 30-year architectural shingle roof in St. Louis, MO costs $450-$750 per square (100 sq ft), or $5,400-$18,000 for most homes with 12-24 squares. 3-tab shingles run $350-$550 per square. Low-pitch roofs land at the low end and steep roofs at the high end. Clay, metal and slate are custom quotes.
- 12 SQ · 1,200 sq ft$5,400-$9,000
- 18 SQ · 1,800 sq ft$8,100-$13,500
- 24 SQ · 2,400 sq ft$10,800-$18,000
Price by roof size, shingle and pitch
Every row uses our 2026 Missouri pricing: 30-year architectural $450-$750/SQ and 3-tab 25-year $350-$550/SQ. The pitch columns show the architectural estimate for each pitch.
| Roof size | 3-Tab 25-yr | 30-yr Architectural | Arch. Low Pitch | Arch. Medium Pitch | Arch. Steep Pitch |
|---|---|---|---|---|---|
| 10 SQ (1,000 sq ft) | $3,500-$5,500 | $4,500-$7,500 | $4,500 | $6,000 | $7,500 |
| 12 SQ (1,200 sq ft) | $4,200-$6,600 | $5,400-$9,000 | $5,400 | $7,200 | $9,000 |
| 15 SQ (1,500 sq ft) | $5,250-$8,250 | $6,750-$11,250 | $6,750 | $9,000 | $11,250 |
| 18 SQ (1,800 sq ft) | $6,300-$9,900 | $8,100-$13,500 | $8,100 | $10,800 | $13,500 |
| 20 SQ (2,000 sq ft) | $7,000-$11,000 | $9,000-$15,000 | $9,000 | $12,000 | $15,000 |
| 24 SQ (2,400 sq ft) | $8,400-$13,200 | $10,800-$18,000 | $10,800 | $14,400 | $18,000 |
| 28 SQ (2,800 sq ft) | $9,800-$15,400 | $12,600-$21,000 | $12,600 | $16,800 | $21,000 |
| 32 SQ (3,200 sq ft) | $11,200-$17,600 | $14,400-$24,000 | $14,400 | $19,200 | $24,000 |
| 36 SQ (3,600 sq ft) | $12,600-$19,800 | $16,200-$27,000 | $16,200 | $21,600 | $27,000 |
| 40 SQ (4,000 sq ft) | $14,000-$22,000 | $18,000-$30,000 | $18,000 | $24,000 | $30,000 |
Try the estimator
Instant Roof Cost Estimator
Missouri roofing, 2026 pricing. Move the slider and pick your shingle and pitch.
1 square (SQ) = 100 sq ft of roof. Range 10-40 SQ.
Full range $8,100 - $13,500 ($450-$750/SQ). Medium Pitch uses the middle of the range.
Estimate only. Your free photo-documented inspection sets the final price.
How pitch changes the price
- Low Pitch (2/12 - 4/12): low end of the range. Example, 18 SQ architectural: $8,100.
- Medium Pitch (5/12 - 7/12): middle of the range. Example, 18 SQ architectural: $10,800.
- Steep Pitch (8/12 - 12/12+): high end of the range. Example, 18 SQ architectural: $13,500.
What can change your final price
Your free photo-documented inspection sets the final number. The most common reasons it moves within (or past) the range:
- Roof decking that needs replacing once the old shingles are off
- More than one layer of old shingles to tear off
- Chimneys, skylights and walls that need new flashing
- Ventilation that needs to be added or corrected
Clay, metal and slate
These need an in-person look, so they're a custom quote, not an online price. Call Mike to lock your price: 314-202-7663.
Where these prices apply
These are our 2026 prices for roofing in the St. Louis area of Missouri. Roofing coming soon after IL license. In Illinois we offer siding, gutters, and soffit & fascia.
Roof cost FAQ
How much does a new roof cost in St. Louis?
A 30-year architectural shingle roof costs $450-$750 per square, or $5,400-$18,000 for most homes with 12-24 squares. 3-tab runs $350-$550 per square.
What is a roofing square?
One square is 100 square feet of roof surface. A roof with 1,800 sq ft of surface is 18 squares.
How does roof pitch change the price?
Low pitch (2/12-4/12) is priced at the low end of the range, medium pitch (5/12-7/12) in the middle and steep pitch (8/12 and up) at the high end.
Is 3-tab or architectural shingle better value?
3-tab costs less ($350-$550 per square, 25-year). Architectural shingles ($450-$750 per square, 30-year) are thicker, last longer and are what most St. Louis homeowners choose.
Do you price clay, metal or slate online?
No. Clay, metal and slate need an in-person look, so they're a custom quote. Call Mike to lock your price.
Do you offer financing?
Yes. Financing is available for retail roof, siding and gutter projects. Ask during your free evaluation.
Do these prices apply in Illinois?
No. These prices are for roofing in the St. Louis area of Missouri. Roofing coming soon after IL license; in Illinois we offer siding, gutters, soffit and fascia.
Lock your price: free photo-documented inspection
Missouri roofing. During business hours, we call as soon as your request comes in.
More answers: How much does a new roof cost in Missouri? · Will insurance pay for a new roof? · Roof replacement