St. Louis Roof Installation
New Construction and First-Install Roofs Built for the Midwest
A new roof should be the last roof you think about for 25+ years. In St. Louis, that means building the system right from the deck up: proper ice-and-water shield at eaves and valleys, calculated attic ventilation, 6-nail patterns for Midwest wind, and material choices that actually handle hail and freeze-thaw. We install new roofs for new construction, home additions, and first-time replacements with the same attention to detail on every job.
Schedule Your FREE
Roof Inspection & Estimate
Estimates within 24 hours
Where is your property?
We serve Texas, Louisiana & Missouri
What do you need?
Almost done!
How can we reach you?
By submitting, you consent to follow-up messages. Reply STOP to opt out.
What does new roof installation cost in St. Louis?
New roof installation in St. Louis typically runs $11,000-$28,000 for architectural shingles on a 2,000-square-foot home, depending on roof complexity, material choice, and installation details. Class 4 impact-resistant shingles (recommended given St. Louis hail exposure) add 15-20%. Standing seam metal starts around $22,000. For new construction, we coordinate with general contractors on scheduling, deck inspection, and material staging. For home additions, we match the new roof system cleanly to the existing structure.
- New construction and addition installations
- Architectural shingles: $11,000-$20,000 typical 2,000 sq ft home
- Class 4 impact-resistant upgrade: +15-20%, earns insurance discounts
- Standing seam metal: $22,000+ for 40-70 year lifespan
- 50-year manufacturer warranty options
- Builder-friendly scheduling and coordination
Building a Roof That Lasts in St. Louis
Details That Matter From Day One
A new roof installed correctly in St. Louis should give you 20-30 years of reliable service. A new roof installed with shortcuts starts failing at year 8-12. The difference is in the details, most of which happen before shingles are even installed.
Ice-and-Water Shield at Eaves and Valleys
Impact: St. Louis winters create ice dams at eaves that can push melting snow back under shingles and into the decking. Many builders still install only the code-minimum amount of ice-and-water shield. That's fine for passing inspection, inadequate for preventing damage.
Our Solution: We install ice-and-water shield across all eaves (extended to at least 24 inches inside the exterior wall line) and up every valley, regardless of code minimums. This is one of the single most important details for St. Louis roofing longevity.
Attic Ventilation Balance
Impact: Inadequate attic ventilation cooks shingles from below. Poorly designed intake/exhaust balance (or missing soffit intake entirely) can cut shingle lifespan nearly in half in Midwest humidity.
Our Solution: We calculate ventilation requirements (typically 1 sq ft of net free area per 300 sq ft of attic floor, balanced between intake and exhaust). On new construction, we coordinate with the builder on soffit design. On replacements, we upgrade ventilation where needed.
Proper Flashing at Every Transition
Impact: Most roof leaks happen at flashings, not in the middle of shingle fields. Step flashing at walls, counter-flashing at chimneys, pipe boots, skylight curbs, and roof-to-roof transitions are all common failure points in St. Louis freeze-thaw conditions.
Our Solution: We rebuild flashing details using mechanical flashing methods (not caulk-only). Step flashing gets properly layered with shingles, not surface-applied. Chimney counter-flashing gets recessed into mortar joints on masonry.
Wind-Rated Installation Patterns
Impact: Severe thunderstorms in St. Louis regularly produce 60-80 mph gusts. Standard 4-nail shingle installation meets minimum code but is often the first thing to fail in serious wind events.
Our Solution: We use 6-nail installation patterns as our default, with enhanced starter strips along rakes and hand-sealed hip/ridge caps. This is our standard, not an optional upgrade.
St. Louis Roof Installation Costs (2026)
Installation costs for new construction, additions, and first-time roofs vary based on scope, materials, and coordination requirements. Here's the general picture:
Architectural Shingles (Standard)
$11,000 - $20,000
Baseline for most St. Louis residential installations. Reliable, attractive, and covered by strong manufacturer warranties.
Class 4 Impact-Resistant Shingles
$14,000 - $26,000
Recommended for St. Louis given hail frequency. Earns insurance premium discounts of 15-28% typically, making the upgrade cost-effective over time.
Standing Seam Metal
$22,000 - $45,000
40-70 year lifespan. Best-in-class storm performance. Premium upfront, but often the last roof the house will ever need.
Stone-Coated Steel
$18,000 - $35,000
Metal performance with shingle aesthetics. Good option for HOAs that restrict metal appearance.
Premium Materials (Synthetic Slate, Clay Tile)
$28,000 - $60,000+
For high-end homes where aesthetics justify the investment. Synthetic slate is weight-friendly; clay tile requires structural evaluation.
Factors Affecting Price
- 1Roof size and complexity (dormers, valleys, multiple planes)
- 2Pitch (steeper = more labor and safety equipment)
- 3Number of penetrations (chimneys, skylights, vents)
- 4Accessibility (second stories, tight lots, landscaping)
- 5Ventilation upgrades and ice-and-water shield extent
- 6HOA and municipal permit requirements
These ranges assume straightforward new construction or installations on existing structurally sound decks. Decking replacement, complex transitions, or code upgrades affect final pricing. We provide free estimates with complete scope breakdown.
How We Install New Roofs in St. Louis
Our installation process is the same whether the house is new construction or a decades-old home getting its first full replacement. The fundamentals don't change.
Assessment and Scope
For existing structures, full roof and attic inspection with written estimate. For new construction, coordination with the builder on deck timing, material delivery, and weather windows.
Local Note: On existing homes, we specifically assess ventilation adequacy, a common upgrade opportunity during replacement.
Material Selection and Ordering
Walk through options with samples. Finalize shingle type, color, ventilation upgrades, and any premium details. Materials ordered with lead time built in for weather and delivery.
Permits and HOA
Municipal permits handled in-house. HOA submissions handled if applicable. We manage the paperwork and follow-through.
Deck Preparation
For new construction: inspection of plywood or OSB decking, nailing pattern check, and coordination with builder. For existing homes: tear-off of old materials, deck inspection, and replacement of damaged decking before installation begins.
Local Note: We photograph decking conditions before covering. This matters for warranty documentation and future insurance claims.
Ice-and-Water Shield, Underlayment, Drip Edge
Ice-and-water shield at eaves (extended beyond code minimum) and valleys. Synthetic underlayment across the field. Drip edge at rakes and eaves.
Local Note: For St. Louis, we extend ice-and-water shield across all eaves regardless of municipal code minimums.
Shingle Installation
Starter strips with enhanced wind resistance. Field shingles installed with 6-nail patterns. Valleys detailed with W-valley metal or woven method depending on the system.
Flashing and Penetrations
Step flashing at walls, counter-flashing at chimneys, pipe boot installation, skylight flashing, and all other penetrations. Mechanical flashing methods, not caulk-only.
Hip and Ridge Caps
Ridge vent installation (continuous ridge vent is the default), ridge cap shingles, and hand-sealing at critical junctions.
Ventilation Verification
We verify the attic actually breathes post-installation: intake at soffits working, exhaust at ridge working, no blocked vents. This is often skipped by other installers and is one of the most common reasons Midwest roofs fail early.
Cleanup and Warranty Registration
Multiple magnetic sweeps for fallen nails. Debris removal. Warranty registration with the manufacturer before we leave. Completion photos for your records.
Why St. Louis Builders and Homeowners Choose Us
Installation quality shows up over decades, and the first year is the easy part. We install every roof like we'll be the ones answering the phone 15 years from now, because we will be.
Installation Standards That Exceed Code
We install to manufacturer best practices, not municipal minimums. 6-nail patterns, extended ice-and-water shield, calculated ventilation, hand-sealed caps. Code is a floor, not a target.
Builder-Friendly Coordination
For new construction, we coordinate with general contractors on scheduling, weather windows, and material staging. We plan around your build schedule so we don't become the trade that holds it up.
Class 4 Impact Options Discussed Upfront
In St. Louis, we always discuss Class 4 impact-resistant options. For new construction and replacements, starting with impact-resistant shingles often saves money over the long run through insurance discounts and storm resilience.
Documentation for the Long Run
Every installation gets photo documentation, warranty registration, and completion paperwork. When you sell the home or need to reference the install 10 years later, everything is on file.
Our Installation Experience
We've installed hundreds of roofs across Texas and Louisiana, covering new construction, custom homes, production builders, and first-time replacements. The transferable skill is installation discipline. Code minimums get roofs past inspection. Proper installation gets them to 25+ years. We bring the second standard to every St. Louis installation.
For new construction, we work with builders on scheduling, deck inspection, and coordination with other trades. Our crews are employees, not subcontractors, so the same people you coordinate with on one job will be there for the next. For additions and first-time replacements, we match new roof details cleanly to existing structures: step flashing, transitions, and material compatibility.
If you're a builder considering us for a tract of homes or a custom project, we'd welcome the conversation. If you're a homeowner planning your first major roof install, we'll walk you through every decision with clear tradeoffs, no upsell.
Recent Projects
St. Charles County New Construction
New home build with Class 4 impact-resistant shingles as part of builder upgrade package.
Challenge: Weather window coordination with other trades on the build schedule.
Solution: Planned installation during a 3-day dry window with material pre-staged and crew scheduled ahead. Completed in 2 days.
Webster Groves Home Addition
Two-story addition to an older home. New roof needed to match existing architecture and match existing shingles as closely as possible.
Challenge: Matching shingles on a 15-year-old home with a discontinued color.
Solution: Sourced the closest current match, planned installation to minimize color transition visibility, and integrated flashing details cleanly at the new/old junction.
Kirkwood First-Time Replacement
Original roof reaching end of life after 23 years. Homeowner wanted the installation done right this time.
Challenge: Previous installation had inadequate ventilation causing early shingle failure from below.
Solution: Full tear-off, decking inspection, ventilation calculation and upgrade (ridge vent + soffit intake added), ice-and-water shield retrofit, and premium shingle installation. Full documentation for homeowner records.
FAQ
Frequently Asked Questions
What's the difference between roof installation and roof replacement?
Installation typically refers to new construction or a home addition where there's no existing roof to remove. Replacement involves tearing off the existing roof and installing new materials on the existing structure. Both processes share the same core installation steps. The difference is mostly what happens before the shingles go on.
How long does roof installation take for new construction?
A typical 2,000 sq ft new construction roof installs in 1-2 days once the deck is ready and weather cooperates. Larger custom homes or complex rooflines may take 2-4 days. We coordinate with the general contractor on weather windows and trade scheduling.
Do you work with builders on production or custom new construction in St. Louis?
Yes. We work with general contractors on new construction ranging from single custom homes to production builder tracts. Our crews are employees, so the quality and coordination stays consistent across a builder's jobs.
Should I install Class 4 impact-resistant shingles on my new St. Louis home?
In most cases, yes. St. Louis sits in an active hail corridor, and Class 4 shingles earn insurance premium discounts (typically 15-28% with major Missouri carriers) that often offset the 15-20% upgrade cost within 3-5 years. More importantly, your new roof survives the first major hailstorm without needing replacement.
What warranty comes with a new roof installation?
Standard installations include manufacturer material warranties up to 50 years plus workmanship coverage. As a GAF-certified contractor, we can offer premium warranty tiers with extended workmanship coverage and transferable terms that add value at resale.
Do you handle permits and HOA paperwork for new installations?
Yes. We pull all required municipal permits, handle HOA submissions where applicable, and coordinate inspections. For new construction, permit coordination with the general contractor is part of our standard process.
What about ventilation for new construction roofs?
Proper attic ventilation is critical for roof longevity in St. Louis. We calculate ventilation requirements (typically 1 sq ft net free area per 300 sq ft attic floor, balanced between intake and exhaust) and coordinate with the builder on soffit design and ridge ventilation. This is one of the single most important details for roof lifespan.
Contact information
Thank you for considering us for roofing needs. We will get back to you during normal business hours.
