Skip to main content
Three generations of roofers · Central Valley, NY  ·  Serving the Hudson Valley
Frank Stevens & Sons Roofing, Inc. · Est. 1973
Call 1-845-928-2161 Request an estimate
Crew installing a single-ply membrane on a commercial flat roof

Home Flat Roofs

The roofs nobody sees.

Flat roofs keep schools, firehouses and factories dry, and almost nobody ever looks at one. We have been installing, replacing, repairing and restoring every type of flat roof system in North America since 1973.

Manufacturer certified

NDL warranties up to 30 years.

As long-standing trained installers, licensed and certified with the roofing system manufacturers below, we are able to offer the very best manufacturer-backed No-Dollar-Limit (NDL) warranties in the industry, ranging up to 30 years.

An NDL warranty means the manufacturer covers the full cost of repair without a cap tied to the original contract value. It is only available through certified contractors, and it is registered in the building owner's name.

GAF Master Elite ContractorCarlisle SynTec SystemsElevate (formerly Firestone)Duro-LastJohns ManvilleTremco Roofing

System family 01

Single-ply roof membrane systems

Sheet membrane roofing, mechanically attached, fully adhered or ballasted depending on the building, the deck and the exposure.

EPDM rubber

Fully adhered, mechanically attached or ballasted. The proven workhorse for Hudson Valley commercial roofs.

PVC

Fully adhered or mechanically attached. Hot-air welded seams, strong chemical and grease resistance — a common choice over kitchens.

TPO

Fully adhered or mechanically attached. Reflective white surface that reduces cooling load on large flat roofs.

System family 02

Asphalt-based roof systems

The multi-ply systems that have protected institutional buildings for a century, still the right answer for a lot of roofs.

Built-up hot tar (BUR)

Hot-applied, gravel-surfaced or smooth-surfaced. Redundant plies, exceptional durability, decades of service life.

Cold-applied built-up

The same multi-ply redundancy without a kettle — often the answer for occupied schools and medical buildings.

SBS modified bitumen

Granular or smooth surfaced. Torch, hot-mop or cold-adhered, with excellent flexibility in a Northeast freeze-thaw cycle.

System family 03

Restoration & waterproofing systems

When the deck and insulation are sound, restoration can add years of service life for a fraction of a tear-off — and without disrupting the building.

Fluid-applied systems

Acrylic and reflective elastomeric coatings that seal the existing membrane and cut heat gain.

Polyurethane coatings

High-build, impact-resistant coatings for roofs that see traffic or ponding conditions.

Metal retro-fit systems

Restoring an aging metal roof in place — sealing the seams and fasteners rather than removing the panels.

Maintenance

The cheapest roof is the one you maintain.

We have held long-standing maintenance contracts with several school districts and counties in this region. Scheduled inspection catches the small failures — a split seam, a failed pitch pocket, a clogged drain — before they become a deck replacement and a claim.

Regular documented maintenance is also a condition of most manufacturer warranties. We handle the inspection, the repair and the record.

Ask about a maintenance program

Leak diagnosis

There is no roofing problem we can't solve.

Our vast experience has made us exceptional at diagnosing and eliminating roof leaks. Water rarely enters where it appears inside, and finding the actual entry point is a skill that only comes from having installed the systems yourself.

If your roof is leaking now, call. We would rather look at it today than after the next storm.

Call 1-845-928-2161

Need a number on a commercial roof?

Chris Stevens heads our commercial division and will do the evaluation himself. Bring us a spec, a set of drawings, or just a leak.