
Cottage Grove, Minnesota
Thorough EPDM Roofing in Cottage Grove, MN
Pull a test cut from the black rubber on an older shop building or strip retail center in Cottage Grove, and you usually find a membrane that went down a generation ago, still keeping water out across the field but tired at every seam, curb and edge. That gap between a sound field sheet and worn out details is the entire EPDM conversation in this corner of Washington County.
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Rated 5.0 from 217 Google reviews
- Licensed and insuredMinnesota exterior contractor
- 5.0 from 217 reviewsVerified on Google
- Storm and insurance workWe handle the claim with you
- Faith-based, locally ownedRefreshingly honest
Older Rubber on Older Cottage Grove Buildings
Most of the low slope rubber we look at in this city is second generation work on first generation buildings. The service and retail buildings near Old Cottage Grove and along the highway corridor went up decades ago, and many took their first EPDM back when ballasted rubber was the default answer for a flat deck. Those sheets are often still watertight across the field and failing only at the details: laps built with tape two generations behind current adhesives, pitch pockets shrunk away from the pipe, and edge metal that open wind has worked loose. We see a smaller version of the same story on the residential side, on flat porch and garage bump outs behind the Thompson Grove ramblers, where the low pitch and shallow eaves leave no room for error at the wall tie in. So the honest first question is always whether the building needs a recover, a full tear off, or roof coatings over a membrane that still has service left in it. We core the roof, check for wet insulation and tell you which of the three you actually have.

EPDM Roofing in Cottage Grove
What a Properly Detailed EPDM Roof Gives You
Laps Bonded Fully, Not Just Tacked
Plenty of the older laps here were tacked with a tape that never bonded across the full width, and that unbonded strip is where the peel starts. A primed and rolled splice closes the whole lap, so movement has nothing left to pull on.
Edge Metal That Holds in River Wind
With more Mississippi frontage than any other Minnesota city, open bluff wind gets under loose termination bar and rake trim. A correct fastening pattern and a mechanically locked edge keep the membrane from lifting at the perimeter.
Nothing Left Wet Under the New Rubber
Wet insulation left in place under a recover keeps working on the deck and quietly doubles the cost of the next repair. We core test and cut out the saturated bays so new rubber sits on something solid.
Fewer Midwinter Emergency Calls
Most January leak calls on rubber roofs trace back to a flashing detail, not the field sheet. Rebuilding curbs, drains and pipe boots up front is what takes your building off that call list.
What the 2024 Storm Left, Documented
The August 2024 storm that uprooted trees and downed lines across town left punctures and displaced ballast on flat roofs here. We photograph impact points and seam tears in the language adjusters expect.
Years Added Without Opening the Deck
Where the ballast kept the insulation dry, new rubber can go straight over the old membrane. The deck is never left open overnight, and your tenants keep their schedule instead of working around a week of removal.
How We Work on Cottage Grove Flat Roofs
We Price the Roof We Found
Recover and replace look identical from the ground. We take test cuts, read insulation moisture and check deck fasteners, then price the job we actually found instead of the one that was easiest to guess at.
A Family Run Crew Out of Eden Prairie
We are a family run, faith based company working out of Eden Prairie, close enough that a Cottage Grove punch list item does not wait weeks on an out of state truck. Our 5.0 average across 217 Google reviews came from finishing those small items.
Licensed, Insured, Certificates Ready
Property managers need current paperwork before a crew sets foot on the roof. We are licensed and insured, and certificates go to your owner or leasing office before the first load of material goes up the ladder.
Bluff Wind at Midnight, Answered
We are open 24 hours a day, seven days a week. A seam that opens during a wind event off the bluff gets a temporary dry in that same night, with the proper repair scheduled once there is daylight to work in.
Scope Tied to What the Photos Show
Storm and insurance work is routine for us. We walk the damage with the adjuster and keep the scope tied to what we can show in photos, which matters on buildings that took tree strikes during the August 2024 storm.

What people near Cottage Grove say
Orange Exteriors fixed a minor leak that involved replacing flashing and a few shingles blown off our roof. Timely, quality work. Great ideas to keep our roof going long term.
Jim ThomasStorm damage repair From sales to construction crew to upper management, they helped make an insurance battle a breeze. This is the best contractor interaction I have ever had.
Jim NormanRoof replacement Orange Exteriors did an excellent job with my new roofing install. Very professional, on time and hard working crew. Completed the job in one day.
Dick JohnsonRoof installation
EPDM Questions from Cottage Grove
What people in Cottage Grove ask us about this work. If yours is not covered, call and ask.
How old are most EPDM roofs on Cottage Grove commercial buildings?
Most of what we open up here was installed between the mid 1980s and the early 2000s, on buildings that went up well before that. The field sheet frequently still tests fine. The failures show at seams, curbs and edge metal instead. Age by itself does not decide anything, so we core the roof and let moisture readings and deck condition make the call.
Does a Cottage Grove building usually earn a recover?
Recover, more often than not, because the ballasted assemblies common on older buildings here kept much of the insulation dry. Two things force a tear off: saturated insulation across a wide area, and a deck that already carries two membranes, since a third layer is not permitted. We test cut several bays before recommending either path.
Why do EPDM seams fail early on Cottage Grove buildings near the river?
Two forces stack up. Temperature swing here runs from summer heat on a black membrane to deep winter cold, and rubber moves through every cycle, pulling at any lap that was never fully bonded. Then open wind off the Mississippi frontage finds an edge that has loosened and works it wider with each gust. Details fail long before the field does.
Get Your Cottage Grove Flat Roof Looked At
Send us the address and we will walk the roof, pull test cuts, and put a written no obligation estimate in your hands. We answer at (612) 600-8529 around the clock, seven days a week, and we handle storm and insurance work start to finish.
Get Your Free Exterior Estimate
Tell us what is going on with your roof, siding, windows, or gutters. We will take a look and give you a straight answer, including when the answer is that you can wait.
- Phone(612) 600-8529
- Emailadmin@orange-exteriors.com
- Office6600 City West Pkwy Suite 375, Eden Prairie, MN 55344
- HoursOpen 24 hours, Sunday to Saturday
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Rated 5.0 from 217 Google reviews
