Hotel & Resort Roofing Myrtle Beach SC
Commercial hospitality roofing for Myrtle Beach hotels, oceanfront resorts, high-rise condos, and multi-building properties across the Grand Strand. Minimal guest disruption, staged-occupancy scheduling, hurricane-rated TPO, EPDM, PVC, and metal systems. FM 1-90/1-120 wind ratings, coastal salt-air specs, and 24/7 emergency response for revenue-critical roofs.
Why TPO Dominates Commercial Flat Roofing on the Grand Strand
TPO (thermoplastic polyolefin) is the single most-specified commercial flat roof material in the United States, and for good reason on the South Carolina coast. A properly installed 60-mil or 80-mil TPO system handles Grand Strand salt air, UV exposure, hurricane wind uplift, and summer heat better than almost any alternative membrane. Weather Shield Roofing has installed and maintained TPO roofs across Myrtle Beach, North Myrtle Beach, Conway, Surfside, Garden City, Murrells Inlet, Pawleys Island, and the rest of the Grand Strand since 2022 — and we've built a commercial division around the specific demands of coastal commercial property owners.
The question most facility managers ask isn't whether to choose TPO — it's which TPO system, which thickness, which attachment method, and which manufacturer. Those decisions are driven by the building type, the wind zone, the HOA or owner reserve study, occupancy during installation, and the warranty the owner wants. This page walks through each of those decisions the way we make them on an actual Grand Strand job quote — not marketing language, the real specification logic.
TPO vs EPDM vs PVC — The Commercial Material Decision
These are the three single-ply membrane systems you'll be choosing between. Here's how they actually perform on Grand Strand commercial buildings.
| Factor | TPO | EPDM | PVC |
|---|---|---|---|
| Lifespan (Coastal SC) | 18-25 yrs (60-mil), 22-30 yrs (80-mil) | 20-30 yrs (if shaded, less UV) | 25-35 yrs (longest proven) |
| Cost Installed (Grand Strand) | $6.50-14.50/sqft | $5.00-12.00/sqft | $9.00-16.00/sqft |
| UV Performance | Excellent (reflective white) | Good (black absorbs, white available) | Excellent (reflective) |
| Seam Method | Hot-air welded (strongest) | Adhesive tape (weakest) | Hot-air welded (strongest) |
| Chemical Resistance | Good (general commercial) | Fair-Good | Excellent (restaurants, labs) |
| Hurricane Wind Uplift | Excellent (FM 1-120 readily spec'd) | Good (fully adhered only) | Excellent (FM 1-150 available) |
| Energy / Cooling Savings | Highest (reflective, 70-90% SRI) | Lowest (black absorbs heat) | High |
| Best For | Grand Strand default — most commercial | Shaded or heavy ponding | Restaurants, labs, premium builds |
Want the full deep-dive? See our complete TPO vs EPDM vs PVC comparison guide.
Why TPO Wins on the Grand Strand
Four coastal-specific advantages that make TPO the default choice for commercial flat roofing across Myrtle Beach and the Grand Strand.
Salt Air & UV Resistance
TPO membranes include UV stabilizers that hold up in the Grand Strand's intense solar environment — coastal SC averages 215 sunny days per year, and TPO's reflective white surface bounces 70-90% of that solar radiation back into the sky. Unlike asphalt-based systems that grow brittle under UV and salt exposure, TPO's polymer chemistry doesn't oxidize. Salt air doesn't degrade the membrane itself — we just upgrade to stainless or heavy galvanized flashings on ocean-front buildings.
Hurricane Wind Uplift
Grand Strand commercial code requires designs for 130-150 mph basic wind speeds per ASCE 7-22. TPO systems meet FM 1-90 readily and scale to FM 1-120 or FM 1-150 for ocean-front and tall buildings. The hot-air welded seams are mechanically stronger than the parent membrane — the weld doesn't fail before the surrounding TPO does. Post-Hurricane Florence inspections of Grand Strand commercial TPO roofs consistently show intact membranes; failures happen at edge metal, not the membrane.
Energy Performance in Humid Heat
Myrtle Beach's July-August afternoons routinely hit 95°F+ with 80% humidity. A black EPDM roof absorbs that heat and radiates it downward through the insulation, jumping cooling loads. A white TPO roof reflects the majority of solar radiation and cuts cooling costs 10-20% vs a black membrane. On a 40,000 sqft Grand Strand hotel, that's often $8,000-20,000 per year in cooling savings — which by itself can pay back the TPO premium over EPDM in 4-7 years.
Seam Welding vs Adhesive Seams
This is the single biggest technical advantage TPO has over EPDM. TPO seams are hot-air welded at 1,050-1,100°F — the robotic welder fuses two sheets into a single monolithic piece. EPDM seams rely on adhesive tape or liquid adhesive, which ages, shrinks, and becomes the system's weakest point after 10-15 years. Every EPDM leak we've repaired on the Grand Strand traces back to a failed seam. TPO eliminates that failure mode at the source.
The Grand Strand TPO Installation Process
Six-step process from existing roof tear-off to warranty registration. This is the actual sequence on a typical 20,000 sqft Grand Strand commercial job.
Tear-Off & Substrate Prep
Existing membrane and wet insulation removed. Deck inspected for rot, delamination, or fastener pull-out. Any damaged metal or wood decking replaced before insulation goes down. On recover jobs (where a full tear-off isn't needed), a moisture survey confirms the existing system is dry enough to build over.
Insulation Layout
Minimum R-25 polyisocyanurate (polyiso) insulation per South Carolina commercial code and IECC 2021. Typical build is 2-3 layers of staggered polyiso, totaling 3.5-5 inches, plus a high-density cover board (DensDeck Prime or Securock) for puncture resistance. Tapered insulation added on any dead-flat decks to eliminate ponding.
Membrane Layout & Attachment
60-mil or 80-mil TPO sheets rolled out perpendicular to the building's long axis. Three attachment methods — mechanically fastened (fastest, most common), fully adhered (quietest, best for hotels during active occupancy), or ballasted (rare on Grand Strand because of hurricane uplift rules). Fastener spacing tightens in perimeter and corner zones per ASCE 7-22 wind-uplift calculations.
Hot-Air Seam Welding
This is where TPO wins vs EPDM. A robotic hot-air welder runs at 1,050-1,100°F along every seam, fusing the two membrane layers into a single monolithic sheet stronger than the parent membrane itself. Hand welders handle corners, drains, pipes, and detail work. Every seam is probe-tested after welding — a technician runs a seam probe along the entire weld to verify no cold welds or voids.
Flashings, Drains & Penetrations
All roof-top units (HVAC, vents, skylights, pipes) get custom-flashed with target patches or prefabricated pipe boots. Interior drains get new TPO-coated metal clamp rings. Edge metal (termination bar or coping) installed per FM 1-90 or 1-120 wind uplift requirements — the edge of the roof is where 90% of hurricane failures start.
Walk Pads & Final Inspection
Walk pad material installed from roof hatch to each rooftop unit to protect the membrane during ongoing HVAC service. Owner walk-through with before/after photos, warranty registration paperwork, and a care-and-feeding document for the facility team. Manufacturer field inspector visits within 30 days for warranty certification on projects over 10,000 sqft.
TPO Manufacturers We Install on the Grand Strand
Six TPO manufacturers dominate the commercial market. Here's how we choose between them on actual Grand Strand jobs.
Carlisle SynTec Sure-Weld
Heaviest factory membrane. Strong fire resistance. Preferred for ocean-front hotels and large commercial.
GAF EverGuard TPO
GAF's commercial flagship. Strong distributor network along SC coast. Weather Shield installs EverGuard regularly.
Johns Manville JM TPO
Excellent coastal performance. Frequent spec on Grand Strand hotels and medical buildings.
Firestone UltraPly TPO
Popular with facility managers who also specify Firestone EPDM elsewhere in their portfolio.
Versico VersiWeld
Sister brand to Carlisle. Value-priced option when HOA or owner wants Carlisle quality at a budget tier.
Mule-Hide TPO
ABC Supply house brand. Solid for smaller commercial, budget-conscious retail.
Grand Strand Commercial Building Types We Serve
Every commercial building type has its own TPO specification. Here are the six categories we work on most.
Hotels & Resorts
Typical locations: Ocean Boulevard, Kingston Plantation, Grande Dunes, Market Common
Standard spec: 80-mil TPO, fully adhered, tapered insulation
Retail Centers & Strip Malls
Typical locations: Highway 17 Bypass, Coastal Grand, Tanger Outlets corridor
Standard spec: 60-mil TPO, mechanically fastened
Distribution & Warehouse
Typical locations: Carolina Forest industrial, Conway corridor, Highway 501 logistics
Standard spec: 60-mil TPO with R-25 polyiso, mechanically fastened
Medical & Professional Offices
Typical locations: Grand Strand Medical, 82nd Parkway, 17th Avenue corridor
Standard spec: 80-mil TPO fully adhered, quiet install schedule
Light Manufacturing
Typical locations: Conway Industrial Park, 544 corridor, Socastee light industrial
Standard spec: 80-mil TPO, chemical-resistant formulation
HOA, Condo & Multi-Family
Typical locations: Market Common residential, Grande Dunes villas, Pawleys Plantation
Standard spec: 60-mil or 80-mil TPO based on HOA reserve study
What Does Commercial TPO Installation Cost?
2026 Grand Strand installed pricing. All numbers include materials, labor, tear-off (unless noted), permits, and manufacturer warranty registration.
Basic 60-mil TPO, Mechanically Fastened
Retail, warehouse, light commercial where wind uplift requirements are standard and project is on a budget.
$6.50 - $9.00 / sqft installed
60-mil TPO with Cover Board & Tapered Insulation
Standard for most Grand Strand commercial. Cover board adds puncture resistance, tapered insulation eliminates ponding.
$8.00 - $10.50 / sqft installed
80-mil TPO, Fully Adhered
Hotels, medical, and any occupied building where quiet install matters. Also spec'd for ocean-front where wind uplift is critical.
$10.00 - $13.50 / sqft installed
80-mil TPO with Full Tear-Off, Enhanced Warranty
Full replacements on aging commercial. Includes tear-off of old system, new R-25+ insulation, tapered design, 30-year NDL warranty.
$11.50 - $14.50 / sqft installed
Recover System (new TPO over existing, no tear-off)
Only viable when existing system is dry, code-allows a second layer, and moisture scan passes. Saves $1.50-3.00/sqft by skipping the tear-off.
$5.50 - $8.00 / sqft installed
Why pricing varies this wide
Grand Strand commercial TPO pricing depends heavily on deck access, building height, rooftop equipment density, edge metal complexity, insulation R-value required by code, and whether the project qualifies for a recover vs full tear-off. Every quote we write includes a line-item breakdown so you can see exactly what drives the number.
Grand Strand Cities We Serve for Commercial TPO
Based in Myrtle Beach, we install commercial TPO roofing for hotels, retail, warehouse, medical, and HOA properties across the entire Grand Strand.
TPO Installation FAQs — Grand Strand Commercial
What's the difference between 60-mil and 80-mil TPO for Grand Strand commercial roofs?
The mil rating measures membrane thickness — 60-mil is 0.060 inches, 80-mil is 0.080 inches. For most Grand Strand retail, warehouse, and standard commercial, 60-mil TPO with a heavy cover board is fully adequate and carries a 20-25 year manufacturer warranty. For ocean-front hotels, medical buildings, and any roof with heavy foot traffic from HVAC service, we spec 80-mil. The 80-mil membrane has 33% more raw material, better puncture resistance, and typically carries longer warranties (up to 30 years NDL with Carlisle or Johns Manville). The installed cost difference is usually $1.50-3.00 per square foot — on a 20,000 sqft hotel roof, that's $30,000-60,000 more, which is typically justified by the extended warranty and reduced maintenance over 30 years.
How long does a commercial TPO installation take on a Grand Strand property?
Timeline depends on building size and occupancy. For a 10,000 sqft retail tear-off and replacement, plan 5-7 working days in clear weather. A 30,000 sqft hotel (80-mil fully adhered with phased occupancy coordination) typically runs 3-4 weeks because we work one section at a time to keep guest-facing areas quiet. A 100,000 sqft warehouse mechanically-fastened install can finish in 2-3 weeks with a full crew. We schedule around Myrtle Beach's peak tourist weeks (June-August) for occupied hospitality, and we can run night shifts or weekend-only installs for restaurants and retail that can't close during daylight hours. Weather delays add 15-25% to any timeline — TPO can't be installed on wet decking or when ambient temps drop below 40°F, which is rare here but happens a few January days per year.
How long does TPO actually last in Myrtle Beach's coastal salt-air environment?
Real-world lifespan in coastal SC is 18-25 years for 60-mil TPO and 22-30 years for 80-mil TPO when installed correctly and maintained on a twice-yearly inspection schedule. The biggest variables are: UV exposure (TPO handles high UV better than EPDM on the Grand Strand — our white membranes reflect 70-90% of solar radiation), salt-air exposure (doesn't degrade the TPO itself, but corrodes exposed metal flashings and edge details, so we use stainless or heavy-gauge galvanized on ocean-front jobs), ponding water (TPO handles some ponding but prolonged standing water voids most manufacturer warranties — tapered insulation solves this), and foot traffic (HVAC servicing is the #1 failure cause — walk pads and annual inspections prevent this). The Grand Strand's hot, humid climate is actually favorable for TPO vs EPDM because the heat-reflective white surface reduces cooling loads by 10-20% in summer.
Do I need to tear off my old commercial roof or can we recover over it?
South Carolina commercial code allows a single recover layer (so a building that's already had one recover is due for a full tear-off). Three conditions must be met: (1) existing system passes a moisture scan — infrared or electrical impedance survey confirms less than 5% moisture content; (2) the existing membrane is flat with no blisters, ridges, or failed seams creating base-layer issues; (3) the structural decking is sound and fasteners will still hold. When all three check out, a recover saves $1.50-3.00 per square foot and 30-50% of the timeline. When they don't, full tear-off is the only responsible path — recovering over wet insulation traps moisture and destroys the new system in 3-5 years. We run a moisture scan on every recover candidate before quoting.
What wind uplift rating do I need for a commercial TPO roof in Myrtle Beach?
Horry County commercial code references IBC 2021 and ASCE 7-22 for wind uplift. Grand Strand buildings fall in a hurricane-prone region, which means designs calculate to 130-150 mph design winds depending on building type and exposure category. For TPO specifically, we design field attachment for the zone pressures calculated on that specific building — perimeter and corner zones always require tighter fastener spacing or enhanced adhesion. Most Grand Strand commercial TPO is designed to meet FM 1-90 (90 lb/sqft uplift) as a minimum; ocean-front buildings and any building taller than 3 stories we design to FM 1-120 or FM 1-150. The weak point in hurricane performance is never the membrane itself — it's the edge metal (coping and gravel stop). We spec FM-approved edge systems with hurricane-rated cleats on every commercial job.
Can TPO be installed year-round in Myrtle Beach?
Yes, 10-11 months out of the year. The limits are: ambient temperature above 40°F (TPO adhesives and hot-air welds don't set properly in cold), dry deck (we won't install over damp insulation — traps moisture and voids warranty), and winds under 25 mph (membrane sheets become dangerous above that). Myrtle Beach averages 340+ installable days per year. The few January-February cold fronts and occasional tropical system bring most of the unworkable weather. We schedule major installs March-November and plan emergency or urgent work around weather windows in December-February.
What's included in the manufacturer warranty on a new TPO roof?
Two warranties apply. First, the membrane-only warranty (typically 15-20 years) covers the TPO sheet itself against manufacturing defects and UV breakdown. Second, and more important, the System Warranty or NDL (No Dollar Limit) warranty covers the entire assembly — membrane, adhesives, fasteners, flashings, and sometimes labor — against leaks. NDL warranties run 20-30 years depending on the manufacturer and contractor certification level. Weather Shield is a certified installer for GAF EverGuard, which qualifies Grand Strand commercial projects for 25-30 year NDL warranties. The catch: NDL warranties require annual or semi-annual inspections by the contractor, documented maintenance, and repair of any reported damage within 30 days. Facility managers who skip maintenance void NDL coverage — we provide an annual inspection program to keep warranties in force.
How does TPO handle hurricane debris and wind-driven rain?
TPO membrane itself is extremely puncture-resistant when installed over a proper cover board — it survives golf ball-sized hail, tree branches, and common hurricane debris. The failure points in a hurricane are almost always: (1) edge metal lifting and taking membrane with it, (2) rooftop HVAC units torn loose, creating openings, and (3) gutters or parapet caps failing and creating water entry points. Our hurricane-grade commercial installations address all three — FM-rated edge metal with hurricane cleats, HVAC curbs bolted to structural blocking, and reinforced parapet flashings. For wind-driven rain, the hot-air welded seams are watertight up to 6 inches of standing water on the roof (the Grand Strand's heaviest storm surge hasn't produced that on a properly-designed commercial roof in 20 years). Post-Hurricane Matthew and Florence inspections of our installed TPO roofs showed zero membrane failures — only typical edge-metal and rooftop-equipment issues that were covered under service calls, not the membrane system.
Ready for a Commercial TPO Installation Quote?
Serving hotels, retail, warehouse, medical, and HOA properties across the Grand Strand. Detailed line-item quotes, manufacturer warranties up to 30 years NDL, and hurricane-rated installations.