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Tampa Commercial Roofing Co

Serving Tampa and nearby areas

TPO vs EPDM vs Modified Bitumen in Tampa, FL

Choosing between TPO, EPDM and modified bitumen in Tampa comes down to heat, seams, storms and budget, and a free inspection and written estimate shows which fits your building.

Call now: (656) 233-6113 or book your free inspection online

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A few quick answers. A local roofing specialist calls you back the same business day.

Local to Tampa

We connect property owners in Tampa and nearby areas, including Downtown Tampa, Westshore, East Tampa, Brandon, Riverview and Plant City, with one independent local commercial roofing specialist.

  • Dark roofs get very hot

    The EPA says regular roofs can reach 150 to 185 degrees in peak summer sun, and lists light-colored single-ply membranes and coatings as cool roof options for low-slope roofs.

  • Wind rules apply to every system

    Florida roof systems are tested and approved for wind uplift, and the code splits a roof into zones that must hold different loads, with edges and corners held the tightest.

What it costs

Typical published ranges for Tampa. The contractor's written estimate is the price, and the inspection is free.

WorkTypical range
New roof estimate in TampaScheduled the day you call Free
TPO, new over sound insulation$4.15 to $5.70 per sq ft $415 to $570per square (100 sq ft)
TPO, tear-off with new insulation$9.40 to $14.65 per sq ft $940 to $1,465per square (100 sq ft)
EPDM, new over sound insulation$4.40 to $6.05 per sq ft $440 to $605per square (100 sq ft)
EPDM, tear-off with new insulation$9.65 to $14.95 per sq ft $965 to $1,495per square (100 sq ft)
Modified bitumen$4 to $8 per sq ft $400 to $800per square (100 sq ft)
PVC, new over sound insulation$5.40 to $6.45 per sq ft $540 to $645per square (100 sq ft)

See typical commercial roofing prices in Tampa

Three roofs, one question: what holds up here?

If your roof is due for replacement, the bids will likely name one of three systems: TPO, EPDM or modified bitumen. Each one can work in Tampa. Each one has trade-offs. This page lays them side by side so you can read a bid and know what you are buying.

Here is the short version:

TPO

Is a white single-ply sheet with heat-welded seams. It is the most common pick for Tampa warehouses and offices today.

EPDM

Is a rubber sheet, usually black, with glued or taped seams. It has the longest track record of the three.

Modified bitumen

Is a layered asphalt roof, rolled out and bonded in place. It is tough underfoot and common on older buildings and strip centers.

How they compare

Color and heat

TPO is white and reflects sun. EPDM and modified bitumen are dark unless they get a white top sheet or coating. The EPA lists light-colored membranes and coatings as cool roof options.

Seams

TPO seams are welded with hot air into one piece, and a test weld can be checked on site. EPDM seams rely on glue and tape. Modified bitumen layers are bonded with heat or adhesive.

Life span

Published guides put TPO at about 15 to 30 years, EPDM at about 20 to 30 and modified bitumen at about 15 to 25.

Foot traffic and punctures

Modified bitumen is the toughest under heavy foot traffic. TPO resists punctures well.

Repairs

All three can be patched. TPO patches are welded on. EPDM patches are glued or taped. Modified bitumen patches are torched or bonded on.

Price

In published cost guides, TPO and EPDM over sound insulation are close in price. Modified bitumen runs about $4 to $8 per square foot.

Why heat tips the scale in Tampa

A roof in Tampa bakes for most of the year. The EPA says regular roofs can reach 150 to 185 degrees in peak summer sun. Heat dries out sealants, softens adhesives and stresses seams. It also adds to the load on your rooftop AC units.

That is why white TPO is so common here. The EPA says cool roofs can cut peak cooling demand. Lower roof temperatures also mean less daily strain on seams. A dark EPDM or modified bitumen roof can get some of that benefit from a white coating or a reflective cap sheet, which should be in the bid if you want it.

The trade-off: white roofs need cleaning to stay bright. The EPA notes low-slope cool roofs may need periodic cleaning to keep their reflectance.

Why seams matter more here

Most flat roof leaks start at seams and flashing. In Tampa, seams face heat every day and wind-driven rain every summer. Welded TPO seams are strong when done right, and a crew can test the weld the same day. Taped EPDM seams work well too, but they depend on clean surfaces and good adhesive, and heat can wear on them over time.

No matter which roof you pick, ask how seams will be checked at install and at each maintenance visit.

Storms do not care which roof you pick

Every roof system in Florida is tested and approved for wind uplift. What matters most in a hurricane is how the system is attached: the fastener pattern or adhesive at the edges and corners, and the edge metal. A well-attached EPDM roof will outlast a poorly attached TPO roof in a storm. Ask each bidder for the product approval number and how the corners and edges are fastened.

Over the old roof or down to the deck?

Some bids save money by putting the new roof over the old one. Florida code does not allow that when the old roof is water soaked, or when it already has two or more layers. Then everything comes off down to the deck. An infrared moisture scan before you pick a bid tells you which case you are in.

Typical ranges from published cost guides are in the table on this page. Tear-off with new insulation roughly doubles the per-square price. Your written estimate gives the real number.

Questions to ask before you sign

  1. What is the membrane thickness and the brand?
  2. What is the Florida product approval for this system?
  3. How are the corners and edges fastened?
  4. Is the old roof coming off, and was it scanned for moisture?
  5. What does the warranty cover, and does it require yearly upkeep?
  6. Is a white or reflective top included if the roof is dark?

Call (656) 233-6113 to schedule a free inspection and a written estimate with Tampa Commercial Roofing Co.

Frequently asked questions

Which flat roof lasts longest in Florida?

Published guides put TPO and PVC at about 15 to 30 years, EPDM at about 20 to 30 and modified bitumen at about 15 to 25. In Tampa, the install quality, the fastening at the edges and regular upkeep often matter more than the label.

Is white TPO worth it in Tampa?

For most buildings, yes. The EPA lists light-colored single-ply membranes as a cool roof option, and says cool roofs can cut peak cooling demand. In a city where the roof bakes from spring to fall, that adds up.

Is EPDM a bad choice in Florida?

No. EPDM has a long track record and holds up to sun well. It is black unless coated or made in white, so it runs hotter. Its seams are glued or taped, so seam quality and upkeep matter a lot.

Can a new roof go over my old one?

Sometimes. Florida code does not allow a new roof over a roof that is water soaked, or over a roof that already has two or more layers. In those cases the old roof comes off down to the deck.

Is modified bitumen out of date?

Not at all. It is a tough, layered roof that handles foot traffic well and is still common on Tampa strip centers and older buildings. It is usually dark unless it has a reflective cap sheet or coating.

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Common commercial roofing problems in Tampa

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