Stone coated steel installation is fundamentally different from asphalt shingle work. The panels are heavier, the sequencing is more precise, the transition details require greater skill, and the consequences of installation errors — sealed beneath layers of interlocking panels — can be expensive to correct years later. Knowing what a quality installation looks like protects you when you are evaluating contractors and overseeing a project.
This post walks through the complete stone coated steel installation process from the first day on your roof to the final inspection. For product selection context, see our complete guide to stone coated steel roofing and our brand comparison post. For stone coated steel installation services in Arkansas and Michigan, contact our team at (501) 307-1440.
Before Work Begins: Planning and Inspection
Permit and HOA Approval
In most Arkansas and Michigan jurisdictions, a roofing permit is required for a full replacement. The permit process typically requires a contractor license number and proof of insurance — our team handles this on your behalf as part of every project. If you have an HOA, stone coated steel products in tile, shake, or shingle profiles are frequently approvable even in communities that restrict “metal roofing” — we can provide product spec sheets and color samples to support your HOA approval application if needed.
Roof Inspection and Scope Development
Before material ordering, the installation team inspects the existing roof structure. Key items checked include: decking condition (soft spots, delamination, or rot must be replaced before new roofing goes on), rafter and truss integrity, fascia and soffit condition, flashing status, and ventilation adequacy. Stone coated steel is heavier than asphalt shingles — approximately 1.4-2.0 lbs/sq ft vs. 2.0-3.5 for dimensional asphalt — but the structural assessment is still important to confirm no pre-existing deficiencies need addressing.
Day 1: Tear-Off vs. Re-Roof Decision
When Re-Roofing Is Permitted
Many stone coated steel products — including products in the DECRA and Westlake Royal lines — are approved for installation over one existing layer of asphalt shingles when the existing shingles are flat and in serviceable condition. Re-roofing eliminates tear-off labor, speeds up installation (no disposal staging), and keeps old shingles out of the landfill. If your building code permits a second layer and the existing substrate passes inspection, re-roofing may reduce total project cost by $1,000-$3,000 on a typical home.
When Full Tear-Off Is Required
A complete tear-off is required when: two existing roofing layers are already present, the existing shingles are severely curled or buckled (creating an uneven substrate), structural damage requires decking replacement, or the manufacturer’s installation specifications require direct-to-deck attachment. After tear-off, all debris is staged in a dump trailer and removed from site. Exposed decking is inspected and any damaged sheets are replaced before the next phase begins.
Underlayment Installation
A high-performance synthetic underlayment is installed across the full decking surface as the first moisture protection layer. Unlike organic felt paper, synthetic underlayment is tear-resistant, dimensionally stable in wet conditions, and typically rated for 30-90 days of UV exposure (providing protection during installation staging). Some stone coated steel manufacturers specify a proprietary or minimum-spec underlayment — violating this specification can void the product warranty, so we follow manufacturer guidelines on every job.
Ice and water shield — a self-adhering waterproof membrane — is installed at eaves (typically the first 3-6 feet from the eave edge), in valleys, and around all penetrations. In Michigan, where ice damming is a regular concern, we often extend the ice barrier further up the slope to account for expected ice dam depth during harsh winters.
Battens and Starter Courses (Profile-Specific)
When Battens Are Required
Tile profiles — including DECRA Villa Tile, DECRA Tile, TILCOR Bond Tile, and Westlake Royal Barrel Vault Tile and Pacific Tile — require horizontal battens installed over the underlayment. The panels attach to the battens rather than directly to the decking, creating an air gap beneath the panels that improves drainage and ventilation. Batten spacing is precisely specified by the manufacturer (typically 7.5″ to 13″ on center depending on profile) — this is not something to estimate by eye. Incorrect batten spacing causes misalignment that compounds up the roof slope.
Direct-to-Deck Profiles
Shingle profiles — DECRA Shingle XD, TILCOR CF Shingle, Westlake Royal Granite-Ridge, Cottage Shingle — typically install directly to the decking through the underlayment, similar to asphalt shingle installation but with different fastener specifications. Shake profiles vary by product — check manufacturer specifications.
Panel Layout and Installation
Starting Point and Alignment
Installation begins at the eave on one side and works up-slope and across the roof plane simultaneously. Proper alignment at the first course is critical — any misalignment at the bottom compounds over 30+ courses. The crew snaps chalk lines or uses laser levels to establish reference lines before the first panel goes down.
Exposed Fastener vs Concealed Fastener Systems
This is one of the most important technical distinctions in stone coated steel installation. Standard (exposed fastener) systems attach panels with screws or nails driven through the face of the panel at specified locations. The fastener heads are visible but covered by the overlapping panel in the next course — however, the fastener point itself passes through both the steel panel and the underlayment, creating a potential water entry point that relies on the fastener seal for long-term water tightness.
TILCOR’s Concealed Fastener (CF) system — used in the CF Shingle, CF Shake, and Bond Tile products — attaches each panel through a hidden flange at the top edge. The overlapping panel covers this flange completely. No fastener penetrates the exposed panel face. This eliminates the most common long-term leak mechanism in stone coated steel installations, which is why we recommend CF systems for clients prioritizing long-term weather-tightness over installation cost. For more on what this means for long-term performance, see our post on stone coated steel wind and hail ratings.
Valley, Flashing, and Penetration Details
Transition details are where installation quality separates good contractors from great ones. A stone coated steel roof with perfect field panel installation but poor valley flashing will leak within a few years. Here is what each detail requires:
Valleys
Stone coated steel valleys use open-valley or closed-cut methods with purpose-made metal valley flashing. Open valleys — where the flashing is visible as a V-channel between the two roof planes — are preferred for high-flow valleys because they provide maximum water shedding capacity. Closed-cut valleys — where panels overlap the valley line and are cut to a straight chalk line — provide a cleaner visual but are more technique-dependent.
Chimneys and Skylights
These large penetrations require step flashing along the sides and a saddle flashing or cricket behind the chimney to divert water around it. Counter flashing is embedded into the mortar joint of masonry chimneys and laps over the step flashing. All flashing on stone coated steel installations should be 26-gauge steel or heavier — lightweight aluminum flashing does not hold up against the expansion and contraction cycles of a steel roof system.
Pipe Boots and Penetrations
Pipe penetrations (HVAC, plumbing vents, electrical mast) receive purpose-made pipe boot flashings. On stone coated steel, the pipe boot must be installed so the panel can interlock correctly on both sides of the penetration — this requires careful panel cutting and occasionally a split panel approach on concealed fastener systems.
Ridge Caps and Finishing
Ridge caps are manufacturer-supplied profile-matching components — not site-fabricated or improvised. Each manufacturer provides specific ridge cap profiles that match their tile, shake, or shingle field panels. The ridge cap is the last component installed and provides weather protection at the roof peak while completing the visual continuity of the profile.
Hip caps for hip roofs follow the same principle — manufacturer-supplied components in matching profile. Getting this detail wrong with a generic cap profile is visually obvious and warranty-voiding.
Timeline, Crew Size, and Noise
Timeline
A stone coated steel installation takes longer than an asphalt shingle job of equivalent scope. For a typical 2,000-2,500 sq ft home:
- Asphalt shingle replacement: 1-2 days
- Stone coated steel tile profile (batten system): 3-5 days
- Stone coated steel shake or shingle (direct-to-deck): 2-4 days
Complex roofs — many valleys, dormers, penetrations, steep pitch — add time regardless of material. Weather delays for rain are an issue during installation since exposed underlayment should not be left wet for extended periods.
Crew Size
Stone coated steel work typically requires a minimum crew of 3-4 experienced installers. Panel handling (each panel weighs 3-8 lbs depending on size and profile), batten installation, and precision layout work are not tasks suited to a two-person crew. Our Arkansas and Michigan installation teams are manufacturer-trained in the specific products we install.
Noise During Installation
Stone coated steel installation is louder than asphalt shingle work. Panels are cut with metal-cutting tools (not a roofing knife), and the panels themselves make more sound when handled and fastened. Expect elevated noise levels on installation days compared to a shingle job. However, the longer-term noise question — rain and hail sound on the finished roof — is different. Stone coated steel tile profiles with batten systems are actually quieter than many asphalt roofs because the air gap and batten system dissipate impact noise before it reaches the decking. Shingle and shake profiles on direct-to-deck are comparable to asphalt in rain noise.
Post-Installation Inspection
After installation, the crew conducts a final walkthrough checking all transition details, ridge cap terminations, valley flashing, and fastener placement. We also walk the ground perimeter to ensure all granule debris and metal offcuts are cleaned up. A post-installation inspection by the building inspector (where required by permit) typically focuses on flashing details and fastener patterns. Our jobs are documented with photos at critical installation stages for warranty records.
Once your stone coated steel roof is in place, you have decades of low-maintenance performance ahead — see our post on how long stone coated steel lasts and how to safely access the roof for maintenance visits. If you are ready to discuss an installation project, reach out to our team at Lifetime Construction Builders’ stone coated steel roofing page or call (501) 307-1440.