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Zubar Roofing & Exterior Systems
Materials

Flat & Low-Slope Roofing — TPO, EPDM, Modified Bitumen

Flat roofs leak when the seams fail. We don't believe in seams that fail.

  • TPO (heat-welded seams)
  • EPDM rubber (60-mil, fully-adhered)
  • Modified bitumen (torch + cold-process)
  • Porches, dormers, additions, full flat roofs
  • Manufacturer warranty up to 20 years
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Low-slope TPO and shingle roof installation on a New Jersey home — aerial view of the dry-in stage by Zubar Roofing.

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Itemized written quote. No high-pressure sales.

Flat roofs aren't truly flat — they're 1/4 inch per foot minimum slope — and they fail almost exclusively at seams and flashings. The whole job is in getting those details right.

TPO vs EPDM — which one for your roof

TPO is white, heat-reflective, lower cooling cost in summer, and seams are heat-welded for the strongest watertight bond available. EPDM is the classic black rubber roof — slightly cheaper, proven longevity, seams are taped. For residential porch and addition roofs in our service area we lean TPO; for larger commercial flat we still install plenty of EPDM.

When You Actually Need This

  • Flat porch roof leaking at the seam or against the house
  • Older built-up tar roof at end of life
  • Addition with a low-slope section
  • Mansard, dormer, or kick-out roof needing replacement
Our Process

How We Handle Flat & Low-Slope Roofing

  1. 1

    Substrate prep

    Existing surface stripped or recovered per manufacturer spec; rotten decking replaced; tapered insulation added where ponding is an issue.

  2. 2

    Membrane install

    TPO fully-adhered or mechanically-fastened with heat-welded seams; EPDM fully-adhered with seam tape and roller pressure; modified torched or cold-applied.

  3. 3

    Flashings + penetrations

    Every wall, parapet, pipe, and drain detailed with manufacturer-spec flashings and termination bars.

Frequently Asked Questions

Yes. Replacing a flat porch or addition roof while the main pitched roof stays in place is one of the most common jobs we do.
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From Our Blog

Helpful Reading on Flat & Low-Slope Roofing

Practical guides from our team to help you make a confident, well-informed decision.

Cost & Pricing

How Much Does a Flat Roof Cost in New Jersey?

TPO, EPDM, and modified bitumen pricing per square — plus repair-vs-replace math and what actually drives a flat-roof quote.

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Let's Work Together On Your Next Roof

Itemized written quote. Honest answers about whether you actually need a new roof. No high-pressure sales.

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