Double R Roofing designs, installs and protects commercial roof systems across Princeton and Mercer County. From low-slope membrane work to metal systems and urgent leak response, the roof stays focused on what your business does next.
A commercial roofing proposal should describe the complete roof assembly and the work needed to support it. Double R Roofing serves Princeton and surrounding communities with commercial roofing options including TPO, PVC, and EPDM. Before selecting a membrane, assess roof drainage, deck condition, existing insulation, penetrations, and building use. The written scope should identify tear-off or recovery work, attachment method, insulation, flashing, edge details, and how rooftop equipment will be handled. Ask how concealed damage will be documented and priced if discovered during work. Installation scheduling, building access, and occupant protection also matter. Compare the proposed system and written warranty terms with the needs of the building, rather than choosing solely by membrane name or quoted price.
| System | Typical application | Discuss during inspection |
|---|---|---|
| Asphalt shingles | Sloped residential roofs | Slope limits, underlayment, flashing and ventilation |
| Metal | Residential and commercial roofs; profile-specific slope limits | Panel profile, attachment, penetrations and movement |
| TPO / PVC | Commercial and low-slope roofs | Drainage, welded seams, attachment and product compatibility |
| EPDM | Commercial and low-slope roofs | Attachment method, seams, substrate and flashing |
Suitability, cost and service life depend on the selected product, installation, exposure and maintenance. Request a project-specific recommendation.
From Double R Roofing · Insurance and manufacturer credentials · Ask about your roof or report a correction.
Roofing guide updated . General guidance; project conditions and written specifications determine the work.
We look at the whole roof: its field, seams, penetrations, drainage, flashing and the business operating below it. Scroll through the sequence and watch the plan move from inspection to protection.
We inspect seams, flashings, penetrations, drainage paths and visible wear so the plan reflects the actual roof — not a guess from the parking lot.
Field mapping · Leak tracing · DocumentationFrom TPO, EPDM and PVC membranes to modified bitumen and metal systems, we build around slope, traffic, exposure, equipment and the demands of your property.
TPO · EPDM · PVC · Bitumen · MetalHeat-welded seams, penetrations, edges and transitions get focused attention. The goal is a continuous, durable roof system that can handle weather without interrupting your operation.
Seams · Flashings · Penetrations · DrainageWe leave the roof clean, the work documented and the next maintenance conversation clear. When the unexpected happens, our emergency team is ready to respond.
Warranty · Documentation · 24/7 responseDifferent buildings create different demands. We help you choose a commercial system that fits the structure, the environment and the way the property operates.
Reflective, energy-conscious membrane with heat-welded seams for low-slope commercial roofs.
System / TPO-01Flexible synthetic rubber membrane with a proven track record through temperature swings and weather.
System / EPDM-02Reinforced multi-ply protection for demanding roofs, high traffic and built-up applications.
System / MOD-BIT-03Strong single-ply membrane with heat-welded seams and chemical resistance for specialized environments.
System / PVC-04Standing seam and exposed-fastener systems built for long service life, clean lines and low maintenance.
System / METAL-05Emergency leak response and commercial repair for businesses across Mercer County and the surrounding area.
Response / 24-7-06Your team should know what is happening, what comes next and who is responsible for the roof after the crew leaves.
We listen to the building needs and inspect the roof field, details and drainage.
You get a practical recommendation, material path and clear estimate.
We coordinate the work around the property and focus on the details that protect it.
The roof is cleaned, documented and backed by a clear path for future care.
Tell us what the building needs. We’ll help you understand the roof, the options and the next step without the pressure.