Packed Scuppers
Monsoon rain carries grit and leaves to the scuppers. When they clog, water backs up over seam tape that was never meant to sit under a pond.
EPDM Roofing
Nogales EPDM Roofing Contractor
As an EPDM roofing contractor in Nogales, we install, replace, and repair rubber roofs on shops, storage buildings, and older low-slope retail, with taped seams and flashed penetrations.
- Taped and adhered seams
- Flexible on freezing nights
- Detailed around penetrations
- Black or white sheets
Is EPDM Right For This Roof?
EPDM earns its place on roofs that move with the seasons or carry a crowd of pipes and vents.
Good Fit For EPDM
- Shops and storage with little cooling below
- Roofs crowded with vents, pipes, and small curbs
- Odd shapes, step-downs, and inside corners
- Ballasted roofs where the stone goes back down
- An older EPDM roof over a dry, solid deck
Look At Another System
- Cold storage that pays back with a white welded sheet (TPO roofing)
- Long, simple roofs where welded seams go faster
- Pitched steel buildings built for panels
- Roofs with heavy weekly foot traffic to units
- Kitchens or plants venting oil or grease onto the roof
EPDM Trouble Spots On Nogales Roofs
Rubber roofs fail at their details long before the open sheet wears through.
Shrinking Sheet At The Edge
Older EPDM shrinks and tugs at the perimeter, bridging inside corners and pulling termination bars loose along the edge.
Loose Coping Over The Flashing
Coping caps hold the top of the wall flashing. When their fasteners back out in the wind, rain gets behind the rubber at the top edge.
Leaks Around Penetrations
Anchor plates, vents, and pipes punch through the sheet. Their flashings crack before the field does, and a cracked boot sends water straight to the deck.
EPDM Options On A Nogales Roof
Four choices set how an EPDM roof is built and how it ages here.
| Choice | What It Means | When We Use It |
|---|---|---|
| Black or white sheet | Black absorbs heat; white EPDM reflects it | Black over shops and storage, white over cooled space |
| Fully adhered or ballasted | Glued to the cover board, or held down with stone | Adhered on most roofs; ballast where the structure was built for it |
| Seam tape and cover strips | Primed laps closed with tape, then stripped at cut edges | Every EPDM lap, checked again before monsoon |
| Repair, recover, or replace | Patch the details, go over a dry roof, or strip to the deck | Set by cores, shrinkage, and how many layers exist |
Where An EPDM Roof Pays Off
Rubber roofs earn their keep in a few specific places on a building.
- Rubber stays flexible through hard freezes and hot summer afternoons.
- Pre-molded boots and flashing seal crowded vents and pipes cleanly.
- Taped laps stretch with the sheet as the roof moves through the seasons.
- Large sheets cover odd roof shapes with fewer seams to maintain.
- Repairs tie into older EPDM roofs without stripping the whole surface.
Rubber Roof Pulling Away At The Walls?
Call and describe where the sheet has lifted or the corners have opened. Photos from the ground or the hatch help us bring the right flashing materials on the first trip.
+1 (623) 310-0169How We Install An EPDM Roof
Each step targets the details where rubber roofs tend to leak, starting with a full look at the old roof.
Step 1: Inspect Your Roof
We probe the old laps, check corner flashings and drains, and take moisture readings across the field. Shrinkage at the edges and soft insulation both get mapped.
Step 2: Clear Old Material
Failed membrane and wet boards come off to a dry deck. Ballast stone, where there is any, gets moved and staged where the structure can carry it.
Step 3: Set Cover Board
New insulation and a smooth cover board give the rubber a clean, flat surface. Tapered pieces build slope toward drains that used to pond.
Step 4: Lay, Tape, And Flash
Sheets are rolled out, relaxed, and adhered. Laps get primer and seam tape, and inside corners, curbs, and pipes get flashed with pre-formed pieces.
Step 5: Walk The Finished Laps
Each lap edge is checked by hand and sealed where needed. Drains and scuppers are cleared, and you get a walk-through of the roof before the job closes.
Other Membranes And Metal To Compare
Some buildings near an EPDM roof call for a different system.
TPO Roofing
A white welded sheet for cold storage, retail, and offices, where reflectivity and long straight seams matter most.
TPO roofing in Nogales
Commercial Metal Roofing
Panels for pitched steel buildings, or framing that adds slope over a flat rubber roof that keeps ponding.
Commercial metal roofing in NogalesEPDM Roofing Contractor Nogales Questions
When does EPDM make more sense than TPO in Santa Cruz County?
When the roof sees big temperature swings, crowded penetrations, or odd shapes, EPDM is the stronger pick. Rubber stays flexible through cold nights and hot afternoons. Black EPDM fits storage, shops, and ballasted roofs with modest cooling, and white EPDM is there for owners who want reflectivity. Taped seams need checking before every monsoon.
Can an old EPDM roof be repaired instead of replaced?
Yes, if the deck and insulation below are dry. Open laps get cleaned, primed, and re-taped, and failed corners get new flashing. Shrinkage that pulls the sheet tight at every wall shows the membrane is near the end, and replacement starts to cost less than chasing repairs.
Why does EPDM shrink?
Rubber membranes lose a little size as they age in strong sun. The pull shows up first at parapets and curbs, where the sheet bridges the corner and lifts off the wall. Re-flashing those spots buys time; heavy shrinkage across the roof calls for a new sheet.
Is black EPDM too hot for an Arizona roof?
Over storage or a shop with little cooling, black EPDM works well. Over offices, retail, or coolers, the heat it absorbs adds to the cooling load, so we steer those roofs toward white EPDM or TPO.
How are EPDM seams made?
Each lap is cleaned and primed, then closed with seam tape that bonds the two sheets. Cover strips go over field-cut edges, and pre-formed pieces finish corners and pipes. Seams get a hand check along their full length.
Can EPDM be ballasted on a Nogales roof?
Ballast stone holds a loose-laid EPDM sheet down by weight. It only goes back on roofs whose structure was built for it, and wind exposure at the edges decides how much paver or extra stone the perimeter needs.
What roof prep does EPDM need?
A dry, smooth surface. Wet insulation comes out, low spots get tapered fill, and a cover board goes down so fasteners and board joints stay hidden under the rubber. Drains are reset to the new roof height.
Get A Free Estimate For An EPDM Roof
Send the roof size and what you see at the walls, corners, and drains. We start with an inspection of the laps and flashings.