Two roofers brooming a black EPDM sheet into fresh adhesive on a flat commercial roof

EPDM Roofing

Sioux City EPDM Roofing Contractor

Rubber Membrane That Stays Flexible Through Hard Iowa Winters

As a Sioux City EPDM roofing contractor, we install black rubber membrane, fully adhered or mechanically attached, on low-slope commercial roofs with taped seams.

  • Flexible in deep cold
  • Primed, taped seams
  • Adhered or attached
  • Long parapet wraps

Is Your Roof A Match For Sioux City EPDM Roofing

Sioux City EPDM roofing fits cold rooms, older parapet buildings, and roofs that flex in winter. Start from the card closest to your roof.

If Your Roof

Covers Freezer Rooms Or Cold Docks

Rubber stays flexible at the low temperatures above refrigerated space.

Start WithFully adhered EPDM
If Your Roof

Has High Parapet Walls On Every Side

Wide sheets wrap up parapets with fewer splices than narrower rolls.

Start WithEPDM with parapet wraps
If Your Roof

Sits Near Rendering Or Fryer Exhaust

Fats in exhaust soften rubber over time, so that area needs a grease-rated sheet or pads.

Start WithGrease-rated section there
If Your Roof

Is An Old EPDM Roof With Wet Insulation

Seams have opened in many places and core cuts show soaked boards.

Start WithFull replacement

EPDM Roofing Trouble Signs on Sioux City Roofs

Older rubber roofs show their age in a few predictable ways. Each one points to a different fix.

You See

Seams lifting along the laps

Likely Cause

Liquid seam adhesive on older EPDM dries out after decades of freeze and thaw.

What We Do

New EPDM with primed seam tape, or full replacement where many laps have opened.

You See

Membrane pulling at walls and curbs

Likely Cause

Rubber shrinks with age and tugs flashings away from parapets until they tent.

What We Do

Replace the sheet and reflash every wall with fresh terminations.

You See

Punctures and tears in the field

Likely Cause

Hail strikes and dropped tools cut the sheet, most often near units and access hatches.

What We Do

Patch isolated holes, or replace the roof when the cuts are spread across it.

You See

Ballast stones shifted into piles

Likely Cause

Wind and foot traffic move river rock off parts of a ballasted roof and leave bare membrane.

What We Do

Reset ballast, or change to a fully adhered sheet if the deck rating is in doubt.

EPDM Roofing Choices for Sioux City Buildings

Four choices decide how an EPDM roof is built. We settle them after the core cuts.

Fully Adhered vs Ballasted EPDM

Glued sheets resist wind uplift and keep leaks easy to trace. Ballast holds the sheet with stone or pavers and needs a structure rated for that weight.

60 Or 90 Mil Sheets

Thicker rubber stands up longer to foot traffic and hail. We pick the thickness by how busy the roof is and how long you will own the building.

Mechanically Attached Over Steel

Plates and battens fasten the sheet through to steel deck, which helps on large roofs where adhesive cure times would slow the job.

Seam Tape And Preformed Flashing

Factory tape replaces the liquid adhesive older roofs used. Each lap is primed, taped, and rolled, and inside corners get preformed pieces.

What EPDM Roofing Does for Sioux City Cold Storage

Rubber earns its place on cold and older buildings. These are the gains owners see.

Flexible When It Is Coldest

EPDM bends at temperatures that make other sheets stiff, so it handles roof movement over freezer rooms and through Siouxland cold snaps.

Fewer Splices On Tall Walls

Wide sheets run up parapets and around corners in long pieces, which means fewer seams at the spots where wind-driven rain hits hardest.

Leak Tracing That Stays Simple

Adhered sheets keep water from traveling far under the membrane, so a future leak shows up close to its source.

Repairs Without Special Equipment

Patches on EPDM use primer, tape, and a roller, so small punctures from hail or tools get fixed in a short visit.

Rubber Roof Pulling Away From The Walls?

Shrinking EPDM tugs flashings loose before it leaks. Call us to look at it while the fix is still small.

How EPDM Roofing Is Installed in Sioux City

The steps for a fully adhered EPDM roof on a working building.

  1. 1

    Inspect Your Roof

    We probe the old sheet, check seams and walls, and pull core cuts to find wet insulation and the number of layers on the deck.

  2. 2

    EPDM Roof Replacement Starts With Tear-Off

    Old rubber, ballast, and soaked boards come off by section. Rock from a ballasted roof is hauled away or reused only where the new design calls for it.

  3. 3

    Set Insulation And Cover Board

    Polyiso goes down to the specified thickness, tapered toward drains where water sat before, with a cover board that gives the adhesive a firm surface.

  4. 4

    Roll Out And Bond The Sheet

    Bonding adhesive goes on both surfaces and flashes off before the membrane is broomed in. Cold days set how big each section can be, since adhesive needs warmth to cure.

  5. 5

    Tape Seams And Flash The Walls

    Every lap is primed, taped, and rolled. Parapets, curbs, and drains get pressure-sensitive flashing, then we walk the roof with you.

Pair EPDM With Another Roof System

Large buildings sometimes mix systems by roof area.

EPDM Roofing Questions From Sioux City Owners

Answers about rubber roofs for building owners and facility managers.

What is the average lifespan of an EPDM roof in Sioux City?

Plan on roughly 20 to 30 years for a well-kept EPDM roof, with 60 and 90 mil sheets toward the longer end of manufacturer ratings. Thickness, attachment, and seam upkeep decide where a given roof lands. Cold flexibility helps here, but seam tape, flashings, and punctures still need a look each spring and fall.

What are common problems with EPDM roofs in Sioux City?

Seam separation, shrinkage at the edges, and punctures. Older seams glued with liquid adhesive open after many freeze-thaw cycles, shrinking rubber pulls on wall and curb flashings, and hail or dropped tools cut the sheet. Caught early, most of these are repairs; spread across a roof, they point to replacement.

Should a Sioux City building use fully adhered or ballasted EPDM?

Fully adhered, for most buildings here, because it adds no weight to the deck and holds well against wind. Ballasted EPDM is held by river rock or pavers and needs a structure rated for that load. Ballast also slows leak finding, since stones have to be moved to see the sheet.

When does an EPDM roof in Sioux City need replacement?

When repairs stop keeping water out or the insulation underneath is wet across much of the roof. Watch for seams failing in many places, cracked or brittle rubber, and soft spots underfoot. A moisture survey shows how much is saturated; a few isolated problems still call for repair.

Is EPDM a fit for Sioux City packing plants?

For parts of the roof, yes. Over cooler and freezer areas, its cold flexibility helps. Near grease or rendering exhaust, animal fats soften rubber, so those areas get a grease-resistant membrane or protective pads. We map every fan and vent before choosing the sheet for each section.

Is black EPDM a problem for summer heat?

Black rubber does run hotter in July than a white sheet. On cold storage, older buildings, and roofs with good insulation below, that matters less than its cold flexibility. Where cooling loads are high across a big floor, we price a white TPO option next to it so you can compare.

Hire a Sioux City EPDM Roofing Contractor

Tell us about the rubber roof you have now, or the building that needs one. We price EPDM after core cuts and a full roof walk.

Call Us (402) 833-7510