How they are the same
Both are single-ply membranes with heat-welded seams. Both come in white, which reflects the strong Corpus Christi sun and keeps the roof and building cooler. Both can be mechanically attached or adhered, and both need corrosion-resistant metal edges and fasteners near the bay.
Where Duro-Last stands out
Factory-made seams. Duro-Last fabricates deck sheets to fit your building. In its own 50,000 square foot example, rooftop seams drop from about 7,968 linear feet with roll goods to about 1,278 with custom deck sheets.
Pre-made details. Corners, parapet flashings, scuppers and collector boxes can arrive pre-fabricated, so the hardest leak points are made in a factory, not on a hot roof.
PVC chemistry. PVC resists many chemicals, which makes it a strong pick where kitchen exhaust, oils or process fallout land on the roof.
Fire. PVC self-extinguishes after fire exposure.
Where TPO can make sense
On a large, simple, open roof with few penetrations and no grease or chemical exposure, a TPO roof installed from rolls can be the budget-friendly choice. Duro-Last also offers TPO products, so the right answer is about the building, not the brand.
How to decide for a Coastal Bend building
Choose Duro-Last PVC if you run a restaurant or food business, have chemical or oil exposure, have a complex roof with lots of curbs and penetrations, or want the fewest possible field seams in a storm-prone location.
Consider TPO if the roof is simple, the exposure is just sun and weather, and first cost matters most.
Either way, ask for a roof inspection first, and plan for the Texas windstorm inspection and WPI-8 certificate on a coastal re-roof.
How Nelson Roof Contracting runs a Duro-Last job
1. Inspect and measure. We walk the roof, check the deck and insulation, and take the exact measurements Duro-Last needs to fabricate your roof.
2. Duro-Last builds your roof in the factory. From our measurements, Duro-Last fabricates the deck sheets and flashings to fit your building, with up to 85% of the seams welded before delivery.
3. Supervised installation. Our crews install the system with every job supervised, paying special attention to edges, corners and penetrations, where coastal roofs fail.
4. Windstorm inspection. On the Texas coast we plan the roof for the windstorm inspection and WPI-8 certificate from day one.
5. Duro-Last's own inspection. A Duro-Last Quality Assurance technical representative inspects the finished roof before the warranty is issued.
Why Corpus Christi owners call Nelson Roof Contracting
Nelson Roof Contracting is a certified Duro-Last installer that also installs TPO, PVC and EPDM, so we have no reason to push one system. With over 50 years of hands-on roofing experience, we look at your building, what lands on your roof and your budget, and tell you straight which roof fits. If Duro-Last is the right answer, you get a certified installer who knows the Duro-Last process from measurement to final inspection.
Duro-Last is a registered trademark of Duro-Last, Inc. Nelson Roof Contracting is an independent roofing contractor and certified Duro-Last installer.