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TPO and PVC · For general contractors, property managers and owners · the West Valley

TPO and PVC

Thermoplastic single-ply roofing, TPO and PVC, for new commercial buildings and re-roofs: heat-welded seams by certified installers, mechanically attached or fully adhered to the spec, with the manufacturer inspection that earns the 20- or 30-year warranty.

Roofer heat-welding a TPO membrane seam
Ridgeline crew, Peoria
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01 — How we do it

TPO and PVC, the way we actually do it.

TPO is the most common commercial roof in Arizona for a reason: it reflects heat, it is heat-welded instead of glued at the seams, and installed well it lasts twenty-plus years. Installed badly, the seams fail in five. The difference is the welder, the temperature, the speed and the probe, and our crews are certified and checked.

PVC costs more and handles grease, chemicals and ponding better, which is why restaurants, food processing and roofs with poor drainage get PVC from us. We tell you which one the building needs, not which one we have on the truck.

Attachment

Mechanically attached is faster and cheaper; fully adhered handles wind uplift better and has no fastener pattern telegraphing through. The spec, the wind zone and the deck decide. Both are done to the manufacturer's published fastening or adhesive rates, which the inspector checks.

Details are the roof

Field seams rarely leak. Penetrations, curbs, drains, walls and edges do. Every detail is done to the manufacturer's detail drawing, and the foreman probes every seam on the roof before the manufacturer's inspector arrives.

02 — The process

What happens, in order.

So you know what to expect from the first call to the last walk.

Submittals

Membrane, insulation, fasteners or adhesive, details and the warranty submitted to the GC or owner.

Substrate

Deck inspected, insulation and cover board installed to the fastening pattern.

Membrane and details

Sheets laid and welded; every penetration, curb, drain and edge to the manufacturer detail.

Probe, inspect, warrant

Foreman probes every seam; manufacturer inspection; NDL warranty issued.

03 — Specifications

The numbers a buyer asks for.

MembranesTPO 60/80 mil; PVC 60/80 mil; fleece-back
ManufacturersGAF, Carlisle, Firestone, Johns Manville
AttachmentMechanically attached, fully adhered, induction-welded
Warranties15, 20, 25, 30-year NDL
CertificationsGAF Master Select, Carlisle Authorized, Firestone Red Shield
Seam QC100% probed by foreman before inspection
05 — Questions

Questions about tpo and pvc.

TPO or PVC?

TPO for most buildings. PVC where there is grease, chemical exposure or ponding. We will tell you which and why.

How long does a TPO roof last in Arizona?

Twenty to twenty-five years when the seams are welded right and the roof is maintained. The warranty is 20 or 30 years; the roof should outlive it.

Do you install for GCs on new construction?

Yes. About a third of our single-ply work is new construction for general contractors, submitted and inspected like any other trade.

Next step

Need tpo and pvc? Tell us about the job.

A Ridgeline estimator replies the same business day. Program clients reach a foreman on the 24-hour line, any time.

Demonstration site. Ridgeline Roofing is a fictional company. Designed and built by Ironsite Digital to show what a commercial roofing contractor's website should be. Want one like it?