Commercial roofing — low-slope done right

A coating is the option most building owners have not been told about, and on the right roof it is the best money on this page: a fluid-applied membrane over a sound existing roof that restores the surface, seals seams and penetrations, and adds years of service life without a tear-off, without a landfill bill, and often as a maintenance expense rather than a capital replacement — a distinction your accountant may care about more than your facilities manager.

Silicone handles ponding water better than anything else and holds up under UV, though it stays slick and attracts dirt. Acrylic is cost-effective and highly reflective, best where drainage is genuinely good. Polyurethane takes foot traffic and impact better than either. Asphalt emulsion remains a fit over aged built-up roofs.

Here is the honest limit: a coating is not a fix for a wet roof. If the insulation below has taken on moisture, a coating seals the water inside and you have bought an expensive delay. That is what a core cut or an infrared scan is for, and it is why we do the assessment before quoting the coating rather than after.

Standing seam metal is the long-life commercial roof: concealed fasteners, panels that move with thermal cycling, and service lives measured in decades rather than years. We install, repair and re-fasten standing seam, exposed-fastener R-panel and corrugated systems, architectural metal, and metal over existing roofs with a retrofit sub-framing system where a tear-off is not practical.

Most metal roof failures we get called to are not the panels — they are the details: backed-out exposed fasteners with failed neoprene washers, failed sealant at end laps, pipe and curb flashings, ridge and eave terminations, and panels that were fastened in a way that fought thermal movement instead of allowing it. Those are repairable, and a metal roof that is merely leaking at the details does not usually need replacing.

We also fabricate and install the commercial sheet metal that goes with it: coping and parapet caps, gravel stops and edge metal, counterflashing, gutters and oversized downspouts, scuppers and collector heads, curbs and equipment supports.

Some roofs are not a membrane decision at all. We work on:

• Churches, steeples and bell towers — steep and often extreme pitch, difficult access, copper and slate details, and congregations that need the building usable on Sunday
• Slate — repair, selective replacement and full re-roofing, including matching salvaged and quarried slate on buildings where the roof is the architecture
• Clay and concrete tile — broken tile replacement, underlayment renewal (the underlayment almost always fails long before the tile does), and full systems
• Copper — standing seam, batten seam, bay roofs, finials, gutters and conductor heads, and historically appropriate detailing
• Historic and landmark buildings, where the work has to satisfy a preservation standard as well as a weather one
• Municipal, school and institutional buildings, with the documentation, bonding and scheduling those projects require
• Steep-slope commercial — apartment communities, condominiums, hotels and mixed-use buildings that are shingle or metal rather than flat
• Skylights, curbs, hatches and smoke vents, which are the most common leak source on an otherwise sound flat roof
• Solar-ready roofing and re-roofing under existing arrays — the roof should always outlive the array mounted to it

If you are not sure whether your building is a specialty job, send photos and we will tell you plainly.

Multi-family and apartment communities, condominium associations, office buildings, retail centers and strip malls, warehouses and distribution, light industrial and manufacturing, medical and dental offices, senior living, churches and places of worship, schools and universities, municipal and government facilities, restaurants and hospitality, self-storage, auto dealerships, and mixed-use.

Each of those brings its own constraint. A hospital cannot take odor or noise during patient hours. A restaurant cannot lose a dinner service. A distribution center cannot expose inventory, ever. A school wants the work in the summer window. A condominium association needs a scope its board can approve and its owners can understand. We plan around the operation rather than asking the operation to plan around us.

Three honest paths, and the money difference between them is large enough that the assessment deserves to be real:

• Repair — the roof is fundamentally sound with isolated failures: open seams, failed pitch pockets, damaged flashing, a punctured area, backed-out fasteners. The right answer far more often than building owners are told.
• Restore — the membrane is weathered and near the end of its surface life but the insulation is dry and the deck is sound. A coating system adds years at a fraction of replacement cost.
• Replace — wet insulation over a meaningful area, a failing or corroded deck, saturated multi-ply assemblies, widespread membrane failure, or a roof that has already been restored once and reached the end.

What makes the decision evidence rather than opinion: core cuts that show the actual assembly and whether the insulation is wet, infrared or moisture scanning that maps saturated areas without cutting the whole roof, drainage and ponding review, deck and structural condition, and the remaining life of the flashings and edge metal. We report what we find with photographs, including when the finding is that you do not need what we sell.

Most commercial roofing money is wasted by surprise, not by price. A roof that fails in the middle of a fiscal year becomes an emergency purchase at emergency pricing, with an interior damage bill attached.

A roof condition assessment fixes that. We inspect and photograph each roof, document the assembly, the condition of membrane, flashings, edge metal, penetrations and drainage, estimate remaining service life, and recommend action with a rough order of cost — so a five-year capital plan is built on evidence instead of on which building leaked most recently.

For owners with multiple buildings, that becomes a portfolio document: every roof ranked, so you know which two to do this year and which four can wait, and so you can defend the budget request with photographs rather than adjectives.

Nearly every catastrophic commercial roof failure we are called to started as something that cost a few hundred dollars to fix and was never found. Open seams, failed pitch pockets, a clogged drain, a loose counterflashing, a torn boot around a conduit, storm debris left on the membrane.

A scheduled maintenance program covers two inspections a year plus post-storm checks: drains and scuppers cleared, debris removed, seams and terminations examined, flashings and pitch pockets checked, minor repairs made on the spot, and a documented report with photographs after each visit for your building records and your warranty file.

It also protects the warranty. Most manufacturer warranties require documented maintenance, and a roof that has never been inspected can have its claim challenged on exactly that basis. The program pays for itself the first time it catches something in March instead of finding it in August.

Commercial storm damage is harder to see and easier to underpay than residential. Hail bruises a membrane without opening it — the damage is a fractured mat that will fail in two years rather than a hole that leaks today — and wind damage often shows up as lifted or unseamed membrane edges, displaced ballast, damaged edge metal and coping, and torn flashings rather than anything visible from the parking lot.

What we do on a commercial claim: document the entire roof with dated photographs and a test-square methodology an adjuster can follow, identify collateral damage on soft metals, HVAC units, vents and screens that corroborates the storm, scope the repair to the actual system and manufacturer specification, address code-required upgrades where ordinance-and-law coverage applies, and meet your adjuster at the building. Commercial policies also differ in ways that matter — percentage deductibles, per-building deductibles, actual cash value versus replacement cost, and cosmetic-damage exclusions on metal.

See roof insurance claims and storm damage.

Water over occupied space, inventory, server rooms or production equipment is a different kind of emergency, and the cost of the roof is rarely the biggest number involved. Our lines are answered 24 hours a day by a person, we dispatch from the nearest local office, and the order of operations is: stop the water, protect what is below it, document the cause before it is covered up, and then schedule the permanent repair.

Documenting before the tarp goes down matters more than most owners realize — once an emergency repair is in place, proving what caused the loss gets considerably harder, and that proof is what an insurance claim turns on.

The construction is the easy part. Working around a live building is the part that separates commercial contractors:

• Phased work so a section of the building stays operational
• Night, weekend and off-hours scheduling for retail, restaurants and medical
• Odor and fume management, and selecting low-odor or cold-adhered systems near occupied and sensitive spaces
• Tenant and resident notification on multi-family and multi-tenant properties
• Protection of inventory, equipment and interiors, and coordination on anything that has to be moved
• Crane and material staging planned around parking, traffic and deliveries
• HVAC and equipment coordination, including curb work and disconnects with your mechanical contractor
• Safety and site control where the public, staff or students are present
• Daily cleanup and magnet sweeps of lots and drive lanes

Two things decide how long a low-slope roof lasts, and neither is the membrane brand.

Drainage. Standing water 48 hours after rain is ponding, and ponding shortens the life of every system, loads the structure, grows vegetation and finds any weakness in a seam. Fixes range from clearing and adding drains and scuppers to tapered insulation that builds positive slope into the assembly.

Insulation. A re-roof is the one opportunity to correct R-value, and energy codes have raised the requirement substantially over the life of most existing buildings. Tapered polyiso can solve slope and insulation in the same layer, and a cover board protects the membrane from hail and foot traffic.

Code and jurisdiction matter too: most jurisdictions limit a building to two roof layers, so a second overlay usually forces a tear-off; wind uplift requirements drive attachment patterns and edge metal detailing; and reflective membranes may be required or incentivized. We pull the permits your jurisdiction requires and build to the assembly the code and the wind-uplift requirement call for.

There are two distinct warranties and owners routinely confuse them. The manufacturer's system warranty covers the materials, and on larger projects can be written as an NDL (no dollar limit) warranty covering both material and labor for a defined term, where the system, the installing contractor and the inspection requirements all qualify. The contractor's workmanship warranty covers the installation.

What owners should know: system warranties generally require documented maintenance and prompt reporting of damage, they exclude damage from other trades — which is why uncoordinated HVAC or satellite work on your roof can quietly void coverage — and they typically require manufacturer approval before anyone penetrates or modifies the roof. Keep the warranty document, the maintenance reports and the photographs together in one file, and require any contractor working on your roof to notify you before they touch it.

We work with property managers, asset managers, condominium boards and multi-property owners across all seven markets under one point of contact, with consistent documentation, condition reports and capital planning across the portfolio rather than a different contractor and a different report format at every building.

See our property management page, or call the market office nearest the property.

A 20-year roof system is a promise about a company's next 20 years. John Beal Roofing has been in business since 1947, family-owned through three generations, with more than 50,000 satisfied customers, in-house crews in seven local markets rather than subcontracted labor, a lifetime workmanship warranty on installations, 24/7 emergency service answered by a person, and a permanent local address at 12181 Prichard Farm Rd, Maryland Heights, MO 63043.

Licensed and insured (License # 104.011957/105.007037), BBB Accredited, and a BBB Torch Award for Ethics recipient — an award for ethics, not for advertising. Certificates of insurance, references and documentation for bid packages are available on request.

We roof commercial and specialty buildings in 143 cities from seven local offices. Each market has its own crews and its own number — call the office nearest the building.

• St. Louis — (314) 429-6000
  Our home market since 1947 and the largest commercial crew base, covering the metro and surrounding counties.
• Kansas City — (816) 872-9500
  Commercial and multi-family work on both sides of the state line, with heavy hail-claim volume.
• Indianapolis — (317) 726-6000
  Warehouse, distribution, retail and multi-family across the metro and surrounding counties.
• Springfield — (417) 429-1927
  Commercial and institutional work in Ozarks-edge hail country, where storm claims drive much of the volume.
• Columbia / Jefferson City — (573) 343-8993
  Mid-Missouri commercial, institutional and state-facility work with local crews and a local number.
• Lake of the Ozarks — (573) 343-8993
  Hospitality, condominium associations, retail and rental property throughout the lake area.
• Metro East & Southern Illinois — (618) 549-0800
  Commercial and industrial work along the Mississippi storm corridor, with frequent hail and wind claims.