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EPDM roofing in Sterling, VA: what the paperwork says about black, white and gray membranes
Sterling is a census-designated place in Loudoun County. This page does two things. It reports what sixteen county and state pages say about roofs, membranes and color, and it reads the reflectance listings that neutral sources publish for black, white and gray EPDM. Where a document is silent, the silence is the finding.
- 16 county and state pages read, 0 mention EPDM
- 30 EPDM rows in the CRRC directory on October 20, 2026
- Black 0.06 to 0.12 initial reflectance, white 0.77 to 0.79
The paper trail, in order
An owner thinking about an EPDM membrane in Sterling meets documents in a fixed sequence. Here is each stop and what the page read for it says about roofs.
- Association papersLoudoun's Permitting page tells applicants to contact their homeowner or property owner association about extra requirements. The page names no color or membrane rule.
- County permit pagesThe residential and commercial permit lists name additions, decks, alterations and fit-ups. They do not name roofs.
- State permit regulation13VAC5-63-80 is the one document of the sixteen that uses the word roof, and it does so in its permit exceptions, not in a rule about membranes.
- Historic district listThe county names seven historic districts. Sterling is not one of them, so the district review on that page does not reach a Sterling address by name.
- Product listingsReflectance is published by the Cool Roof Rating Council, not by the county. That is the subject of the second half of this page.
What sixteen pages say
Eight Loudoun County pages and eight Virginia pages were read in full for this page: permitting, inspections, contractor hiring, additions and alterations, the Building and Development office, county historic districts, heritage resources, the permit regulation, and the property owners' association and condominium statutes. The wording count is below.
Those six uses sit in the permit exceptions of 13VAC5-63-80: replacing an unlimited amount of roof covering in groups R-3, R-4 and R-5 unless the design wind speed is above 100 miles per hour, replacing 100 square feet or less in any group, and a clause letting a building official require a permit for replacement roofing in a locally designated historic district. The regulation does not choose a membrane or a color. It says who may need a permit.
A page that never mentions EPDM has not approved EPDM, and it has not banned it. Ask Loudoun Building and Development how it treats your building, and keep the reply with your association approval.
Black, white and gray in the listings
Black EPDM as the association describes it
The EPDM Roofing Association says black membrane carries carbon black, which it describes as turning ultraviolet rays into heat. It lists black among the colors the membrane comes in, with ballasted, fully adhered and mechanically attached assemblies.
White EPDM as the association describes it
For white, the same page says titanium dioxide is added in place of carbon black to reflect ultraviolet rays. It says white EPDM is installed mechanically attached or fully adhered, and does not pair white with ballast.
The Cool Roof Rating Council's Rated Products Directory is the neutral place to see numbers. A keyword search for EPDM on October 20, 2026 returned 30 rows. Grouped by the color each row lists, they look like this.
| Listed color | Rows | Initial solar reflectance | Three-year aged | Thermal emittance | Initial SRI |
|---|---|---|---|---|---|
| Black | 10 | 0.06 to 0.12 | 0.07 to 0.09 | 0.82 to 0.87 | -3 to 7 |
| Bright white or off-white | 17 | 0.77 to 0.79 | 0.71 to 0.76 | 0.84 to 0.91 | 95 to 98 |
| Gray | 3 | 0.48 | 0.42 | 0.88 | 55 |
Source: CRRC Rated Products Directory, queried through the directory's own interface on October 20, 2026, keyword EPDM. Ranges computed from the 30 rows; brand and model names are left out. A keyword search is not a full inventory of every EPDM product.
How to read a listing
"does not indicate a ranking or approval"
Cool Roof Rating Council, Rated Products Directory disclaimer, on what a rating meansThree points follow from the neutral pages. The CRRC says a listing does not make a product cool under any code or program, that ratings are for fixed test conditions, and that being listed does not guarantee a product is sold locally. The EPA explains solar reflectance, also called albedo, as the share of sunlight a surface reflects, and thermal emittance as how well it sheds the heat it absorbs. All 30 rows were tested for initial reflectance under ASTM C1549 and every row lists its slope as both low and steep.
The EPA also notes that low-slope cool roofs may need periodic cleaning to keep their reflectance, which fits the gap between initial and aged columns for white. The EPA page lists single-ply membranes with light or cool pigments as one low-slope option and sends readers to the CRRC for rated products. It does not say which color a Sterling roof should be.
The EPDM Roofing Association reports that its funded study found insulation, rather than surface reflectivity, often provided the larger energy benefit in the roof replacements modeled, and that a black-to-white switch without extra insulation was not cost-effective for warehouses and medium offices in some cooler climate zones. The study modeled four building types in nine cities, and the page does not say that Sterling was one of them. The association represents EPDM makers. Weigh it as one input, next to your engineer's calculation.
ENERGY STAR is named by the EPA as a source of basic cool roof information. Its roof product addresses returned page-not-found on October 20, 2026, so this page cites no ENERGY STAR product list.
Color lines for a written scope
The Census Bureau counts 1,450 Sterling housing units in buildings of five or more units, where an association or a landlord rather than a resident may choose the membrane. For any building, these lines belong in the quote.
- The membrane color, named in the scope, and the exact product name so it can be searched in the CRRC directory.
- The listed initial and three-year aged reflectance for that product, copied from the directory with the date it was read.
- The assembly: ballasted, mechanically attached or fully adhered, since the EPDM Roofing Association describes white membrane with mechanically attached or fully adhered assemblies.
- What the insulation under the membrane will be, as the designer states it, because the one study cited above treats insulation as the larger variable.
- Who approved the color: the association, the owner or the landlord, with the document that gives that power.
- Loudoun Building and Development's written answer on whether the work needs a permit for your building group.
Roofers of Arlington installs, repairs and replaces roofs, including flat and metal systems. Book a phone consultation to talk through a Sterling EPDM roof: the questions would be the address, the building type, who owns the roof and which documents you hold. For the membrane itself see the EPDM roofing page, the materials overview and commercial roofing. For the housing mix and storm record see the Sterling guide, and for a different county's rules the Arlington hub. Other pages: roof replacement and services. Back to the Sterling roofing guide.
Where each number and rule came from
- Cool Roof Rating Council, Rated Products Directory
- EPA, Using Cool Roofs to Reduce Heat Islands
- EPDM Roofing Association, Cool Roofs, Standard Attributes and Recent Research on Roof Albedo (manufacturers' association)
- Loudoun County, Permitting and County Historic Districts, with six other Loudoun pages read (copies fetched October 19, 2026)
- 13VAC5-63-80, Virginia Uniform Statewide Building Code
- Code of Virginia 55.1-1815 and six other association and condominium sections
- Census Bureau ACS 2024 five-year, table B25024, Sterling CDP
Questions people ask
Does Loudoun County say anything about EPDM roofs?
Not on the pages read. Eight Loudoun pages on permits, inspections, contractors and historic districts were searched for EPDM, membrane, flat roof and reflectance, and none of those words appears. Ask Building and Development for the answer about your scope in writing.
Is black or white EPDM required in Sterling?
None of the sixteen county and state pages read requires either color. The Virginia permit regulation 13VAC5-63-80 mentions roof covering only in its list of permit exceptions. Whether a building owner, a lender or an association has a color preference is a separate question for their documents.
Where can I look up the reflectance of a specific EPDM membrane?
The Cool Roof Rating Council keeps a public Rated Products Directory with solar reflectance, thermal emittance and a solar reflectance index for listed products. Search the exact product name from your quote, and read its disclaimer, which says a rating is not a ranking or an approval.
Why do the white EPDM listings show a lower aged value than the initial value?
The directory has two columns, initial and three-year aged. For the 17 white and off-white EPDM rows, initial solar reflectance runs from 0.77 to 0.79 and aged from 0.71 to 0.76. The page does not say why; the EPA notes that low-slope cool roofs may need periodic cleaning to keep their reflectance.
Does the EPA list EPDM products?
The EPA cool roofs page names single-ply membranes with light or cool-colored pigments as a low-slope product type, and points readers to the Cool Roof Rating Council for directories of rated products. It does not publish an EPDM product list of its own.
Can I trust an EPDM association's view of white roofs?
Read it as the view of its members. The EPDM Roofing Association says it represents EPDM manufacturers and suppliers, and it has asked governments to pause cool roof mandates. Its insulation study is cited on this page with that attribution, next to the CRRC and EPA material that has no sale interest.
Does a Sterling condominium or townhouse association choose the membrane color?
The Virginia statutes read here define association powers and records but never name roofs or colors. Your recorded declaration and the association's rules are the documents that decide, and members can ask to examine association records under section 55.1-1815.
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.