Flat and commercial roofing

Low-slope roofs that actually drain

Single-ply TPO and EPDM systems with tapered insulation, so water leaves the roof instead of sitting in ponds.

Flat and commercial roofing project by Summit Peak Roofing
Flat and commercial roofing, metro Denver

Low-slope roofs that actually drain: the overview

Denver has thousands of mid-century modern homes, pop-tops and garages with low-slope roofs. Most leaks on these roofs come from ponding water and failed seams, not from the membrane itself wearing out.

We install heat-welded TPO or fully adhered EPDM over tapered insulation that creates slope to drains and scuppers. Seams are probed by hand at the end of every day.

For HOAs and small commercial owners, we offer maintenance plans with twice-yearly inspections and drain cleaning.

  • Energy-reflective white TPO options
  • Ponding eliminated with tapered design
  • Seams inspected daily
  • HOA and multi-unit scheduling

What is included with flat and commercial roofing

Every item below is part of the standard scope, listed on your written quote.

  • Tapered insulation

    Built-in slope to move water off the roof.

  • Heat-welded seams

    TPO seams welded and probed by hand daily.

  • New drains and scuppers

    Sized for Denver's summer downpours.

  • Parapet flashing

    Membrane wrapped and terminated with metal counterflashing.

  • Walk pads

    Protection around HVAC units and access hatches.

  • Maintenance plans

    Spring and fall inspections for HOAs and owners.

How the process works

What to expect from first call to finished flat and commercial roofing.

  1. Core sample and inspection

    We check for wet insulation before quoting.

  2. Drainage plan

    Taper layout designed to your drains.

  3. Install

    Most residential flat roofs finish in 1 to 3 days.

  4. Maintenance setup

    Optional plan with reminders.

What moves the price

Your quote is built from these factors. Ask us to walk through any of them.

  • Membrane type

    TPO, EPDM or modified bitumen.

  • Insulation

    Tapered systems and R-value upgrades.

  • Wet insulation

    Saturated boards must be replaced.

  • Rooftop equipment

    HVAC curbs and penetrations add flashing work.

Flat and commercial roofing: common questions

Straight answers on price, payments, storms and what install day looks like. Still wondering about something?

Ask a real roofer

Mon to Fri 7 am to 6 pm, Sat 8 am to 2 pm

White TPO reflects heat and suits sunny Denver summers. EPDM is very durable and forgiving to repair. We will recommend one based on your drainage and budget.

Yes, for small commercial buildings, HOAs and multi-family properties up to about 40,000 square feet.

A well-installed TPO or EPDM roof typically lasts 20 to 30 years with basic maintenance.

Your roof price, minus the pressure

Free 21-point inspection, a fixed written price and cash or monthly options side by side.

  • No-obligation visit
  • From $129/mo (sample)
  • 4.9 average rating (sample)

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