Cedar Shake Roofing in St. Louis, MO
Natural Wood Character · Fire-Treated · Climate-Appropriate Installation
Residential · Cedar Shake
Natural wood character — installed, treated, and maintained for Missouri's climate
Natural cedar shakes and shingles bring an aesthetic warmth to residential roofing that no synthetic product fully replicates — the hand-split texture, the natural weathering to silver-gray, the organic variation in grain and tone. In the St. Louis market, cedar shake is most common on older homes in historic neighborhoods and on custom builds where architectural character is the priority. However, cedar shake in Missouri's climate demands honest guidance that some contractors skip. St. Louis's freeze-thaw cycle — with ground-level temperatures cycling repeatedly through freezing and thawing from November through March — subjects cedar to repeated moisture absorption and release that accelerates checking and splitting compared to drier climates. Untreated natural cedar carries a Class C fire rating at best. With proper fire-retardant treatment — borate-based or UL 790-listed preservative systems — a Class A fire rating is achievable. Revolve installs natural cedar shake and shingle roofing with proper underlayment spacing for ventilation beneath the shake course, recommends and applies fire and decay treatment at installation, and provides maintenance guidance for the St. Louis climate. We also honestly position premium composite alternatives — DaVinci and Brava — for homeowners who want the cedar look without the maintenance demands. The choice is yours; the information is complete.
Why homeowners and businesses trust Revolve
Proper fire treatment — Class A achievable
Untreated cedar is Class C fire-rated. With a UL 790-listed fire-retardant treatment applied at installation, Class A rating is achievable — a meaningful safety and insurance consideration in St. Louis's densely built neighborhoods.
Climate-appropriate installation details
Cedar shake in St. Louis's freeze-thaw climate requires proper underlayment spacing for airflow beneath the shake course, correctly specified interlayer felt, and adequate eave drip-edge detail. These details extend service life and reduce premature failure.
Honest maintenance guidance
Cedar shake requires periodic cleaning, re-treatment, and inspection. We tell you what the maintenance schedule looks like and what failure looks like — so you can decide whether natural cedar or a premium composite alternative is the right choice for your situation.
What we offer
Hand-Split Cedar Shake
Rough-textured, hand-split Western red cedar shakes — the most traditional and most dramatic cedar roofing profile.
Sawn Cedar Shingles
Smooth-sawn cedar shingles for a more refined, uniform appearance. Appropriate for Colonial, Shingle-style, and formal traditional architectures.
Fire-Retardant Treatment
Borate-based or UL 790-listed fire-retardant treatment applied at installation, achieving Class A fire rating. Documentation provided for insurance purposes.
Decay & Mold Treatment
Zinc-borate preservative treatment to resist the moisture-driven decay and mold growth that Missouri's humid summers accelerate on untreated cedar.
Starter & Ridge Course
Correct starter course installation and ridge cap — the two most failure-prone areas on cedar shake installations in the St. Louis market.
Composite Cedar Alternative Consultation
If the maintenance demands of natural cedar are a concern, we walk through DaVinci and Brava composite options that deliver the cedar aesthetic without treatment cycles.
Related Services
Natural Cedar Shake in St. Louis: What the Climate Actually Does to It
Natural cedar shake has a warm, organic aesthetic that no manufactured product fully replicates — the hand-split grain, the natural weathering pattern, the dimensional variation that gives a cedar roof its distinctive visual texture. For homeowners in St. Louis's historic neighborhoods — Webster Groves, Kirkwood, Clayton, Ladue, and the older stock in Chesterfield and Wildwood — cedar shake is often the historically appropriate choice for homes built before the asphalt shingle era, and its character is genuinely irreplaceable on the right architecture.
But natural cedar in St. Louis's climate has specific and serious performance considerations that a responsible contractor addresses upfront. St. Louis averages 40 to 45 freeze-thaw cycles per year — days where temperatures cross the 32-degree threshold repeatedly from late October through early April. Each freeze-thaw cycle drives moisture absorption and release through cedar's cell structure, creating the microscopic tension that produces checking, splitting, and eventually the cup-and-warp that loosens individual shakes and creates water entry. This is not a failure of the material — it is the material's natural response to a genuinely demanding climate. Understanding it helps homeowners plan maintenance and longevity expectations correctly.
Properly installed and maintained natural cedar shake has a realistic service life of 20 to 30 years in the St. Louis climate. With fire treatment at installation and periodic re-treatment every five to seven years, a Class A fire rating is achievable and maintainable. With zinc-borate and moisture preservative treatment, decay resistance is meaningfully extended. These are not optional upgrades — they are the minimum maintenance program for cedar shake in Missouri that we recommend to every cedar customer.
Installation Standards for Cedar in a Freeze-Thaw Climate
Cedar shake installation in a high-freeze-thaw climate requires specific details that distinguish a long-lasting installation from one that fails prematurely. The most important: proper spaced sheathing or skip sheathing behind the shake course — or an appropriate solid-deck installation with breathable interlayer felt — to allow air circulation beneath the shakes, which reduces moisture retention and the cycling that accelerates checking and splitting.
Revolve installs cedar shake on solid sheathing with breathable interlayer felt between courses and appropriate air circulation design. In St. Louis metro jurisdictions where solid sheathing is required by code, the interlayer felt specification and eave ventilation detail are the critical elements that compensate for the reduced air circulation of solid-deck installation. Starter course installation and ridge cap installation are the two areas where shortcut installation creates the earliest failure — insufficient headlap at the ridge and improperly driven fasteners at the starter course are the most common cedar installation defects we encounter on failed roofs.
Fire Treatment: Class C vs. Class A and Why It Matters
Untreated natural cedar shake carries a Class C fire rating under UL 790 — the lowest of the three letter ratings. In St. Louis's built urban environment — where a significant portion of homes were built before 1950 and neighborhood density means houses are 15 to 25 feet apart — fire rating is a real consideration, not a technical footnote. Many St. Louis homeowners carry homeowners insurance riders or have mortgage requirements that specify Class A roofing materials.
With a UL 790-listed fire-retardant treatment applied at installation, natural cedar shake can achieve a Class A fire rating. The most common products are borate-based pressure treatments and liquid-applied surface treatments classified under ASTM E108. Revolve applies fire-retardant treatment as a standard specification on all cedar installations, not as an optional upsell. We provide documentation of the treatment and the achievable fire rating for insurance and lender submission.
When Composite Cedar Makes More Sense: An Honest Comparison
Revolve installs both natural cedar shake and premium composite cedar alternatives — DaVinci Bellaforte Shake and Brava Cedar Shake. We present the full comparison at every cedar consultation, including a maintenance cost projection that is often the deciding factor for homeowners who want the cedar aesthetic but have honest concerns about the maintenance commitment.
The composite advantage is specific: no fire treatment cycle, no moisture treatment, no Class C fire rating risk if treatment lapses, no freeze-thaw checking and splitting, and a 50-year or lifetime warranty versus the 20 to 30-year realistic St. Louis service life of natural cedar. The natural cedar advantage is equally specific: genuine organic aesthetic at close inspection, traditional craftsmanship character on appropriate architecture, and a lower installed cost at entry. For homeowners planning to sell within 10 years or prioritizing initial cost, natural cedar often makes sense. For homeowners planning to stay for decades, the composite lifecycle economics frequently win the comparison.