Roof Replacement in Potomac Green, Ashburn, VA: Rotted Plywood Found on a New Home Inspection

Finished CertainTeed Landmark PRO roof with a skylight on an Ashburn, VA home

In April 2026, Loudoun Roofing replaced the roof on a home in the Potomac Green neighborhood of Ashburn, Loudoun County, Virginia, for returning customers who had just bought the house. Our roof inspection turned up rotted plywood. The crew tore off the old shingles, replaced the damaged decking, installed a new CertainTeed Landmark PRO roof in Weatherwood, put new trim on the dormers and painted it, and installed new 6-inch gutters with aluminum screens.

Project at a glance

  • Location: Potomac Green, Ashburn, Loudoun County, Virginia
  • Project duration: April 22–27, 2026, from the dormer trim to the finished roof
  • Completed: April 2026
  • Service: roof replacement
  • Shingles: CertainTeed Landmark PRO, Weatherwood
  • Problem: rotted plywood decking found during an inspection
  • Also: new dormer trim (freshly painted), new 6-inch gutters with aluminum gutter screens
  • Quote: Done as quoted. Rotted plywood or beams are extra, and only when needed. “Never any hidden fees.”

About Potomac Green

Potomac Green is a 55-and-over community in Ashburn with about 1,360 homes, according to Loudoun County’s residential community data.

About Ashburn

Ashburn is an unincorporated community in eastern Loudoun County, made up mostly of planned neighborhoods built from the 1990s on. Ashburn Park, a 16-acre county park on Partlow Road with a creek, a nature trail, a playground and a pavilion, is one of the green spaces that the area’s tree-lined streets are known for. Many roofs here are reaching the age where a first replacement comes due.

The challenge and how we solved it

The challenge: after buying a house in Ashburn, the homeowners, already Loudoun Roofing customers, called us back for a roof inspection. We found rotted plywood decking under the shingles, with water staining on the wood and on the attic insulation below it. Rotted decking can’t hold nails properly, and it usually means water has been getting in for a while.

The solution: a full replacement. The crew removed the old shingles down to the decking, replaced the damaged sections of plywood, and installed a new roofing system on solid wood. The crew also installed new dormer trim and painted it, and replaced the gutters with new 6-inch gutters fitted with aluminum screens.

Before

Front of a home with dormers and a garage in Ashburn, VA before the roof replacement
Before: the front of the home before the roof replacement
The original gray shingle roof with a skylight on an Ashburn, VA home before replacement
Before: the original roof and skylight
Rotted, water-stained plywood roof decking found during an inspection in Ashburn, VA
Before: rotted decking found during the inspection

What we did

  1. Inspected the roof and documented the rotted plywood
  2. Removed the old shingles down to the decking
  3. Replaced the rotted plywood with new decking
  4. Installed underlayment and the new roofing system
  5. Installed CertainTeed Landmark PRO shingles in Weatherwood
  6. Installed new dormer trim and painted it
  7. Installed new 6-inch gutters with aluminum screens
  8. Cleaned up the site
Ashburn, VA roof with the old shingles partly torn off down to the decking
During: old shingles coming off down to the decking
Wide view of an Ashburn, VA roof torn off to the decking during a roof replacement
During: the roof torn off to the decking

The finished project

Overhead view of the finished CertainTeed Landmark PRO roof on an Ashburn, VA home
After: overhead view of the finished roof
Aerial view of a finished gray shingle roof with three dormers in Ashburn, VA
After: aerial view of the finished roof

Why these materials

CertainTeed Landmark PRO shingles in Weatherwood. CertainTeed lists Landmark PRO with a lifetime limited transferable warranty, a 30-year StreakFighter algae-resistance warranty, a UL Class A fire rating and UL 2218 Class 3 impact resistance. Details are on CertainTeed’s Landmark PRO page. See our page on CertainTeed Landmark shingles for the full lineup we install.

Keeping your roof in good shape

  • Clean your gutters after the fall leaf drop and again in spring. Clogged gutters push water back under the edge of the roof.
  • After strong storms or wind warnings from the National Weather Service Baltimore/Washington office in Sterling, look over your roof from the ground for missing or lifted shingles.
  • Keep tree limbs trimmed back from the roof so branches don’t scrape shingles or drop debris into valleys.
  • Check your attic a couple of times a year for water stains, and keep attic vents clear so moisture can escape.
  • In winter, watch for ice building up along the eaves. Heavy ice dams are worth a call.

Frequently asked questions

Yes. A home inspection does not always include getting on the roof. A roofer can spot soft or rotted decking, failed flashing and worn shingles before they turn into leaks.

It means water has been reaching the wood under the shingles, often from a slow leak, poor ventilation or failed flashing. Rotted decking has to be replaced before a new roof goes on.

No. New shingles need solid decking to hold nails and stay sealed. Covering rotted wood just hides the problem.

Weatherwood is a popular CertainTeed Landmark PRO color with warm brown and gray tones that suit a lot of Ashburn homes.

CertainTeed lists a lifetime limited transferable warranty for Landmark PRO, plus a 30-year StreakFighter algae-resistance warranty.

Most roofs like these take one to two days, depending on weather and what the crew finds under the old shingles.

Planning a roof project in Ashburn?

Loudoun Roofing works across Loudoun County, with 24/7 emergency service. See our roofing in Ashburn page, learn about roof replacement and roof inspections, browse more Loudoun Roofing projects, or request a free estimate. You can also call (571) 508-8642.

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