Government EPDM Roofing
EPDM membrane roofing on government buildings.
What government EPDM roofing involves
EPDM installed in wide sheets with fewer seams, and older EPDM roofs repaired where the seams and flashings have let go.
EPDM is proven and lasts when it is detailed well. Most failures are at the seams and edges.
What matters on government EPDM roofing
Drainage before material
The first question on any low-slope roof is where the water goes. Ponding is what kills membranes, and a roof that holds water for days after a storm will fail early regardless of which sheet is on it. We look at the slope, the drains and the terminations before we talk about material.
Seams and terminations
Field failures on commercial roofs are rare. Failures at seams, curbs, drains and the parapet edge are common. A hot-air welded seam that has been probed is a continuous sheet. Anything taped or glued and unverified is a scheduled leak.
Older EPDM roofs
A lot of public buildings carry EPDM roofs that are decades old. The rubber is often still sound, and the seam tape and flashings are what has failed.
We look at which it is before recommending anything. Repairing the seams on a sound sheet costs far less than replacing the roof.
How the system goes together
Decking is the part nobody plans for
The sheathing under the roof only gets looked at once every couple of decades, which is when the old roof comes off. Older homes up here might have skip sheathing, plank decking with gaps, or plywood that has been soft over a leak for years. It gets replaced where it is bad, because fasteners do not hold in punky wood and a soft deck telegraphs every wave through a new roof.
It is measured, not guessed
Sheet count gets documented once the roof is open, before anything goes back down.
Intake and exhaust have to match
Attic ventilation is a balance, and most of the failures we find are unbalanced. Ridge vent with the soffit stuffed full of insulation is exhaust with no intake, so the attic pulls its air from the house instead and drags moisture up with it.
How it shows up
Frost on the sheathing in January, a hot attic in July, curling shingles on the upper courses, and an ice dam at the eave that nobody can explain.
Baffles are cheap
Keeping the insulation off the soffit with a proper chute fixes more roofs than most people would believe.
What we check
- Field condition and granule loss
- Valleys, ridges and every transition
- Penetrations and their flashing
- Gutter and fascia condition
How we approach it
Look first
We get on the roof and read what is actually happening before quoting anything.
Say what we find
Photographs and a plain explanation, including when the answer is that you do not need us yet.
Built in sequence
Crews we hire and run, working the right detail in the right order.
Leave it clean
Magnet over the yard, container gone, walked with you.
Inversion keeps a roof damp
Winter here can park a lid of cold air over the valley floor for a week straight. Nothing dries during that stretch. A shaded slope that got wet on Monday is still wet on Friday, the sheathing under it never gives its moisture back to the air, and any lap that was going to wick does its wicking slowly with no interruption.
Gray weeks do quiet damage
Storms get blamed for roofs. Nine flat gray days with the sun never touching the north face do more, and nobody remembers them.
Snow sliding off steep pitch
Steep roofs shed, which is good for the roof and hard on everything below it. A loaded slope lets go at once and takes gutters, vent caps and the occasional shrub with it. On metal it happens faster because there is nothing to hold it. Homes with steep pitch over a walkway or a doorway get looked at differently than the same roof over an open yard.
Snow retention when it matters
Where a slide is a hazard, cleats or a retention rail spread the load and let it melt off instead of releasing in one sheet.
Where roofs go wrong
The shortcut we see most
A membrane laid over wet insulation because tearing off would have cost a day. The roof looks finished, the moisture stays underneath, and the sheet fails early from below.
What good looks like instead
Moisture surveyed, wet sections cut out and replaced, drainage corrected, then the membrane installed and its seams probed.
Signs worth a look
- Ponding water still standing two days after rain
- Seams that have lifted or opened at an edge
- Blisters or ridging across the field
- Interior staining near drains, curbs or the parapet
What to expect
Scheduling around your operation
Most commercial work can be staged so the disruptive part happens when the building is quiet. Tear-off noise, crane or hoist time and material deliveries all get planned against your hours rather than ours.
What the roof survey covers
Before specifying anything we survey the existing assembly: slope and drainage, moisture in the insulation, the condition of seams and terminations, and how the roof is being used. A roof somebody walks on weekly needs a different answer from one nobody touches.
Documentation
Commercial and public work runs on records. We photograph the existing condition, the work in progress and the finished assembly, so there is a file rather than a recollection.
Related work
Government covers more than one job, and they are not interchangeable. These are the others in the same family, each on its own page.
Questions we get asked
Not the question you had? Call the shop and ask a person. We would rather talk it through than have you guess from a website.
(801) 382-8898Which membrane is right for my building?
It depends on the traffic, the exposure and what comes out of the exhaust. TPO and PVC are welded and light, EPDM is proven and has fewer seams in wide sheets, mod-bit and built-up are heavier assemblies. We specify for the building rather than for what is on the truck.
Can you work around our business hours?
Usually. Most commercial work can be staged so the noisy part happens when the building is quiet, and we talk about that before the schedule is set.
How long does a commercial membrane last?
It depends far more on drainage and detailing than on the sheet itself. A membrane with standing water on it and a membrane that drains properly will not last the same length of time.
Do you handle the insurance side?
On hail-damaged roofs, we work with your insurance to get the roof covered. We document the damage thoroughly with photographs, so the claim reflects what is actually on the roof.
Do you work through the winter?
Yes, with judgment. Shingles need to seal, and in genuine cold that takes longer or needs hand sealing. Emergency work happens whenever it has to. Full replacements get scheduled around the weather rather than forced into it.
How do I know when a roof is getting close?
Granules collecting in the gutters, tabs lifting or curling at the edges, shingles that look bare in patches, and daylight or staining in the attic. Any of those is worth a look.
Ask about government EPDM roofing
Call (801) 382-8898 or send a note. We will look at the roof and tell you straight what it needs.