Residential & Industrial Roofing Installation: Shingle, Metal, TPO & EPDM Systems Nationwide
We don't recommend materials before we know what the substrate can actually support.
Every commercial and industrial project begins with a deck assessment.
TurnKey National installs the right roofing system for every building type.
We handle roofing installation across residential, industrial, and commercial properties in all 50 states. Our crews are matched to building type: residential crews for shingle and standing seam metal, industrial crews for low-slope membrane systems and metal decking.
Every commercial and industrial project begins with a pre-installation deck assessment. Membrane selection follows that finding. We don't recommend materials before we know what the substrate can actually support.
Philadelphia-based dispatch. Crews on the ground wherever your property sits.
Roofing failures in older building stock don't wait for a convenient schedule.
Philadelphia's building environment shapes how TurnKey thinks about roofing at scale. A significant share of Mid-Atlantic housing and commercial inventory was built before 1960. That means aged decking, original membrane systems, and modified bitumen layers that have been torched over two or three times. Our crews recognize those conditions before the first layer comes off.
From our Philadelphia dispatch operation, we route specialized roofing crews to active projects across all U.S. states. Industrial and warehouse projects get crews experienced with metal decking and large-format TPO (Thermoplastic Polyolefin, a single-ply white membrane heat-welded at the seams for low-slope applications). Residential projects get crews trained on shingle systems, standing seam metal, and steep-slope installation sequencing.
The crew matches the building. That distinction matters more than most property owners realize until a mismatched crew shows up on site.
What a deck assessment found before we touched a single sheet of TPO
The membrane wasn't the problem. The deck underneath it was.
On one project, a mid-size warehouse in the Mid-Atlantic region, the surface membrane looked intact from a distance. Standing seams appeared sealed. No obvious blistering. The facility manager reported a recurring wet spot near a rooftop HVAC curb that hadn't dried out in two winters.
We pulled back a section of TPO near the curb and found what the symptoms suggested: the metal decking underneath had started to corrugate from moisture cycling. The insulation board was saturated. The deck in that section had lost meaningful structural integrity.
Here's what the diagnostic process clarifies on low-slope commercial roofing: the membrane surface is the last place water registers as a problem. By the time it's visible from inside the building, the damage has already worked its way down through the system layers.
We documented the deck condition, scoped the structural repair as Phase 1, and then specified the replacement TPO system over the corrected substrate. The full project cost more than a surface membrane replacement would have. A surface replacement over a compromised deck fails within 18 to 36 months, and that second replacement costs more than doing it right the first time.
We don't recommend a membrane until we know what it's going on top of. That's the process.TurnKey National Roofing Team
Membrane selection is a structural decision, not a product preference.
We don't sell you a material. We assess your building and recommend what fits.
Property owners and facility managers often come in asking for TPO because it's the most widely specified commercial roofing membrane. Others ask for EPDM (Ethylene Propylene Diene Monomer, a black rubber membrane used on low-slope roofs) because a prior project used it. Neither answer is wrong. But neither is automatically right, either.
Here's how we handle material selection. We assess the existing deck condition and slope, review current drainage and ponding patterns, and factor in the building's HVAC load and regional climate exposure.
TPO
TPO's reflective white surface reduces cooling loads. That matters in southern states and urban heat island environments.
Warm climates, high cooling loadsEPDM
EPDM's flexibility in cold temperatures makes it a better performer in climates with aggressive freeze-thaw cycling, like much of the Northeast and Midwest.
Freeze-thaw regionsModified bitumen
Modified bitumen (an asphalt-based layered system applied by torch or self-adhesion) is frequently the right call for buildings that already have multi-layer systems and don't need a full tear-off.
Existing multi-layer systemsThe recommendation follows the assessment. Not the other way around.
Our roofing installation standards
ISO 9001 certification means our roofing quality procedures are documented, audited, and repeatable. Every roofing project at TurnKey National runs through the same documented quality sequence. The process is the same whether the project is a 1,200-square-foot residential re-roof in one state or a 40,000-square-foot industrial membrane replacement in another.
Pre-installation deck assessment
On every commercial and industrial project: structural condition documented before any material is specified or ordered.
Material verification at delivery
Manufacturer certifications confirmed against project specification before installation begins.
Staged installation sign-offs
Each phase documented by crew lead before proceeding to the next layer.
Seam inspection protocol
For TPO heat-welded seams and EPDM adhesive seams: tested before final surface completion.
Drainage and ponding review
Post-installation review confirms proper slope and drainage function after installation.
Workmanship warranty
Issued at project completion, alongside applicable manufacturer material warranties.
ISO 9001-audited recordkeeping
Every project generates documentation that can be referenced if a warranty claim or insurance question arises later.
Proper seams. Verified materials. Documentation at every phase.
Our roofing execution protocol
Every project follows a fixed sequence. No steps skipped. No phases overlapped.
Phase 1: Pre-Installation Assessment
We begin every roofing project with a physical site inspection, not a visual-only review. On low-slope industrial and commercial projects, this means probing the existing membrane, examining deck structure at accessible points, and reviewing drainage patterns and curb conditions around HVAC equipment and penetrations. On residential projects, we inspect decking from the attic when accessible and assess fascia, soffit, and flashing conditions. Findings are documented and shared with the property owner before material selection or scheduling proceeds.
Commercial & industrial roofing systems
- Application
- Low-slope commercial & industrial
- Seam method
- Heat-welded
- Application
- Low-slope, cold-climate applications
- Seam method
- Adhesive or tape
- Application
- Multi-layer systems, older commercial stock
- Seam method
- Torch-applied or self-adhering
- Application
- Steep-slope commercial & industrial
- Seam method
- Mechanical interlocking
Lifespan bars on a 0 to 50 year scale.
For industrial projects, roofing system warranty (the combined manufacturer material warranty and contractor workmanship warranty issued at completion) typically runs 10 to 30 years depending on membrane type and the installer's certification status with that manufacturer.
Residential roofing systems
Residential installations follow a separate crew and process track. Asphalt shingle systems (architectural and impact-rated) cover the majority of residential re-roof volume. Standing seam metal roofing is increasingly specified in high-wind regions and for property owners seeking a 40-plus-year system lifespan. Material selection on residential projects factors in roof pitch, attic ventilation, existing deck condition, and local building code requirements for that state.
Low-slope vs. steep-slope classification matters here. A roof with under 2:12 pitch requires a membrane system: applying shingles on a low-slope application is a code violation in most jurisdictions and a warranty-voiding installation error. We classify every residential roof before specifying any material.
Phase 2: Installation
Commercial membrane installation follows the manufacturer's published sequence for that system. TPO seams are heat-welded and tested for integrity before any adjacent section proceeds. EPDM seams are adhered and inspected at each lap. Flashing terminations, curb wraps, and penetration boots are treated as separate scope items, not afterthoughts.
Residential installation begins with deck repair or replacement of any compromised sheathing identified in Phase 1. Ice and water shield is applied at eaves and valleys in cold-climate states before underlayment. Shingle fastening follows the manufacturer's specified nailing pattern for that wind zone.
Phase 3: Post-Installation Inspection and Documentation
After installation, our crew lead conducts a final walk of every plane and penetration. On commercial and industrial projects, drainage is tested by water flow observation at downspouts and scuppers. Seam integrity is spot-checked at the most mechanically stressed points: curbs, transitions, and corners. On residential projects, flashings, ridge caps, and valley terminations are reviewed before the crew leaves the site. All post-installation documentation is filed under the project record in our ISO quality management system.
Areas we serve
TurnKey National roofing crews serve residential and industrial properties in all 50 U.S. states.
Our dispatch operation runs from Philadelphia, Pennsylvania. Crew assignments are matched to project type and location. We serve urban markets, suburban portfolio properties, rural industrial sites, and multi-state property portfolios through a single point of contact.
No geographic restriction. No referral-out model.
Frequently asked questions
Anything else goes faster on a call. 610-890-6975
Your building's climate, slope, and existing deck condition determine the membrane. TPO is a white, heat-welded membrane that reflects heat: better for warmer climates and buildings with high cooling loads. EPDM is a black rubber membrane that stays flexible in freezing temperatures: better for cold-climate and freeze-thaw regions. TurnKey completes a pre-installation deck assessment before recommending either system. Material selection follows the findings, not a catalog preference.
Timeline depends on building size, membrane type, and deck condition findings. A residential re-roof typically completes in one to three days. Commercial and industrial membrane projects run longer: deck repairs, material lead times, and phased installation all affect the schedule. TurnKey issues a documented project timeline after the pre-installation assessment, before any work begins. No installation schedule is confirmed until deck findings are reviewed.
Damaged deck is scoped as Phase 1 repair before any new membrane is specified. Our crews document the condition with written findings shared directly with the property owner. The project proceeds in the correct sequence: structural repair first, membrane installation second. Installing new membrane over a compromised deck causes premature failure within 18 to 36 months. That sequence is non-negotiable on every TurnKey roofing project.
Yes. TurnKey crews document pre-replacement conditions through the same ISO 9001-audited recordkeeping used on every project. That documentation supports insurance adjuster reviews and warranty claims. Property owners receive a complete post-installation record at project close. If your roof replacement is insurance-funded, having contractor documentation in the same file as the adjuster's estimate protects you if coverage disputes arise later.
Matching the prior system ignores what caused it to fail. Membrane failures on low-slope roofs almost always start below the surface: saturated insulation, corroded decking, compromised fasteners. Replacing the same material on the same damaged substrate repeats the failure cycle. TurnKey's pre-installation assessment identifies subsurface conditions before any material is ordered. ISO 9001 certification means that assessment step is documented and required: it cannot be skipped to accelerate scheduling.