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EPDM roofing in Falls Church, VA: what falls on a rubber roof, and who walks on it
A rubber membrane is soft by design, so the threats to it are physical: a branch, a boot, a dropped tool. Federal storm records for the City of Falls Church describe wind events almost entirely through trees and limbs, and a federal guide specification for EPDM spends real space on walkways and punctures. This page sets the two side by side.
- All 5 wind reports for the City zone name trees, limbs or branches
- None of the 7 storm narratives mentions a roof
- A federal spec asks for 6 inches between walkpads for drainage
What the storm narratives describe
NOAA's Storm Events Database logs each report with a short written narrative. We downloaded the 2016 through 2025 detail files and counted the rows for the zone "Falls Church (C)." The count is seven: five thunderstorm wind reports and two hail reports.
Then we read the narratives. Every one of the five wind reports describes fallen trees, limbs or branches, and two add wires. Neither hail report describes anything beyond the size of the stones. No narrative among the seven says a roof was hit.
For a low-slope rubber roof that is the useful reading. The documented hazard in the City is debris from above, not a measured failure of any membrane.
This is a record of reports, not of damage. A quiet year does not prove calm, and a tree report is not a claim about any one building. For the City rules behind a re-roof, start with the Falls Church hub page.
The seven reports, one by one
- August 7, 2019
- Estimated gust of 50 knots. Large limbs blocked the roadway at Westmoreland Road and Washington Avenue.
- July 1, 2021
- Estimated gust of 61 knots. Nearly a dozen trees and large branches came down, mainly north of Broad Street. A 4-foot diameter oak was uprooted near North Four Mile Run Drive and 26th Street North, and a tree fell onto wires and a car.
- August 10, 2021
- A personal weather station measured 51 knots, which the narrative converts to 59 miles per hour. Trees, branches and wires came down along West Broad Street between the Fairfax County line and West Street.
- September 22, 2021
- Estimated gust of 50 knots. The tops of four healthy oaks, one to two feet across, snapped off near Four Mile Run in Isaac Crossman Park.
- July 29, 2023
- Estimated gust of 56 knots. The narrative says numerous trees and large branches blew down around the City.
- April 15, 2024 (two reports)
- Quarter-size hail, one report City-wide and one in the 400 block of West Broad Street.
Three of the five wind reports fall in a single summer and early fall, 2021. Two narratives place the fallen trees along or north of Broad Street, which says where observers reported them, not where the City has trees. This page uses no City tree canopy figure because none of the City documents read for it states one.
Wind reports and hail reports
Five wind reports
Gusts of 50, 50, 51, 56 and 61 knots. The narratives are about trees and limbs. For a membrane, the physical question is what a falling limb or a broken branch end can do to the surface, which the next section approaches through what a federal specification asks installers to avoid.
Two hail reports
Both from one afternoon, both quarter size, both silent on any building. The database holds the size and place, nothing on the roof under the stones. Inspection after such a day is a matter for the roof, not the record.
If a storm does cause a loss, see our roofing insurance explainer and the roof repair page.
Walking on rubber: what the guide spec says
The Unified Facilities Guide Specification for EPDM roofing (section 07 53 23, August 2025, from USACE, NAVFAC and AFCEC) is written for federal projects, not for Virginia homes, and it is a model to be edited, not a code. It shows what a professional document treats as a risk to the sheet.
- Keep traffic off the bare sheet. It says not to permit storing, walking, wheeling or trucking directly on applied roofing, and asks for temporary walkways of smooth, clean boards, mats or planks.
- Mind footwear and tools. Workers on the membrane should wear clean, soft-soled shoes, and equipment with sharp edges that could puncture the sheet is not to be used.
- Mark permanent routes with walkpads. Pads go at roof access points and traffic areas, per the membrane manufacturer, with at least 6 inches between adjacent pads for drainage.
- Judge the route by frequency. A drafting note says to use pavers or rubber walkboards where an area bears foot traffic for maintenance once per month or more. It gives rubber walkboards a minimum of one quarter inch thick.
- Protect the sheet under anything set on it. Reinforced membrane or walkpad material is adhered under set-on accessories, and accessories are not fastened through the membrane.
"Do not use equipment with sharp edges which could puncture the EPDM sheet."
UFGS 07 53 23, EPDM Roofing, Part 3 execution notesThe text does not say how many trips a membrane tolerates, and neither does any other neutral document reviewed for this page. Ask a roofer what route a service technician, a satellite installer or a homeowner would walk, then see that it is marked.
Debris, drains and inspection
Twice a year, and after a storm
SPRI says low-slope roofs should be inspected at least twice per year and after any major storm.
Edges and penetrations
It asks that perimeters be checked for loose metal or fasteners, with attention to flashings around penetrations.
Debris and drains
It says to remove debris and make sure drains are open, which in a City with the tree reports above is a roof-level task.
SPRI adds that if questions arise, consult the installing contractor or a Registered Roof Consultant. Membrane thickness is another item to name in writing: the EPDM Roofing Association, which represents manufacturers, lists 45, 60, 75 and 90 mil sheets.
For the material itself see our EPDM roofing page, and for other low-slope systems the flat roof page and the materials overview.
Questions for an EPDM quote
- Where do people walk on this roof, and will walkpads mark those routes with space between them for water?
- Do trees overhang the roof, and who clears debris and checks the drains?
- Which sheet thickness does the quote name?
- What is fastened or set on the membrane, and how is the sheet protected under it?
- Does the work touch rafters or a major portion of the decking, which the City says changes the permit answer?
- For a building with several owners, who approves a change of roof?
Roofers of Arlington installs, repairs and replaces roofs, including flat systems. Book a phone consultation to talk through a Falls Church EPDM roof at (571) 397-6072. Have the address, the roof shape and where tree limbs reach ready. More options are on services, and the Arlington County guide covers the county itself.
Documents opened and when
All opened on October 20, 2026. NOAA files were counted locally; the guide specification and SPRI page were read directly.
Questions people ask
Do Falls Church storm reports mention roof damage?
None of the seven NOAA reports for the City zone from 2016 through 2025 mentions a roof. The five wind narratives describe trees, limbs and in two cases wires coming down, and the two hail narratives give only the stone size. The database cannot show whether any membrane was cut.
Why would a tree matter to a rubber roof?
A limb can drop onto a membrane, and a broken branch end is a sharp object. A federal EPDM guide specification lists equipment with sharp edges among the things to keep off the sheet. The storm database does not say a branch ever punctured a Falls Church roof.
How much walking can an EPDM membrane take?
No neutral source reviewed for this page gives a number of trips. The federal guide specification says workers on the membrane should wear clean, soft-soled shoes, and it calls for walkpads at access points and traffic areas.
What is a walkpad?
In the federal guide specification it is a protective layer set on the membrane along routes where people walk, installed to the membrane manufacturer's printed instructions. The same text asks for at least 6 inches between adjacent pads so water can drain.
How often should a rubber roof be inspected?
SPRI, the single-ply roofing industry association, says low-slope roofs should be inspected at least twice per year and after any major storm, looking at perimeters, flashings and drains. Ask your installer or a Registered Roof Consultant what applies to your roof.
Does a flat roof in the City need a permit to repair after a tree falls?
The City permit page says a house roof can be replaced without a permit unless rafters or a major portion of the decking are replaced, and says other building types differ. A tree strike that breaks framing is a different question, so call the City permits line, 703-248-5080, before work.
Does the City say anything about EPDM specifically?
The City pages read for the hub do not name EPDM or any other roof membrane. This page therefore describes the material from neutral technical documents and the storm record, not from a City rule about rubber roofing.
What thickness does EPDM come in?
The EPDM Roofing Association, which speaks for manufacturers, lists sheets of 45, 60, 75 and 90 mils, a mil being a thousandth of an inch. A quote should state which thickness is meant.
Talk through your roof with Roofers of Arlington
Share the address, what you are seeing on the roof and the decision you need to make. We will tell you what to expect before anything is scheduled.