GAF Master Elite roofers serving Olney Mill, Hallowell, Manor Oaks, Norbeck, Williamsburg Village, and every upper Montgomery County block in between — with ventilation upgrades, canopy-ready shingle specs, and lifetime workmanship on every roof.
Olney roofs sit on a very specific housing stock: 1970s and 80s split-levels and colonials in Olney Mill, Hallowell, and Williamsburg Village (routinely on their 3rd roof with undersized original ventilation), Cape Cods and ramblers along the Norbeck corridor, and larger estates in Manor Oaks, Manor Lake, and Fair Hill Farm with cut-up roofs, dormers, and 3,500+ square feet under upper Montgomery County's dense hardwood canopy. Each demands a different spec — and getting it right means StainGuard Plus algae-resistant shingles for the canopy, ice & water shield past code in every valley, and a real ridge and soffit ventilation upgrade on every 1970s-era re-roof.
Potomac Custom Remodeling is a GAF Master Elite contractor (top 2% of U.S. roofers) and MHIC #140855 licensed roofer. Every Montgomery County DPS permit is pulled under our MHIC number and delivered closed with your warranty packet. Full-system installs are the default, not an upsell.
From 1970s Olney Mill splits to Manor Oaks estates — we've re-roofed every upper-Montgomery-County housing style.
Fewer than 2% of U.S. roofers earn this. Qualifies Olney homeowners for the GAF Golden Pledge — GAF's strongest warranty.
StainGuard Plus algae resistance and Class 4 impact-rated Titan XT — built for Olney's mature hardwood cover.
Montgomery County homeowners rating us on Google. Reputation built one Olney roof at a time.
Full-service roofing from a Montgomery County-experienced contractor — from single-shingle repairs to full estate re-roofs and 1970s ventilation retrofits.
Full tear-off and GAF or Tamko install on Olney Mill splits, Hallowell colonials, and Norbeck-corridor estates across 20832 and 20833.
Leaks, flashing failures, blown-off shingles, chimney and skylight re-flash — same-week response across upper Montgomery County.
Wind, hail, and fallen-limb damage documentation, 24-hour tarps, and insurance-scope roof restoration.
1970s splits, colonials, Cape Cods, and larger Manor Oaks / Fair Hill estates — every Olney roofing style.
Seamless aluminum gutters, oversized downspouts, and leaf protection engineered for Olney's dense hardwood canopy.
TPO, EPDM, and low-slope systems for Route 108, Georgia Avenue, and Olney Town Center commercial properties.
Approved manufacturer partners only — GAF and Tamko — with full-system detailing.
Architectural asphalt, 130 mph LayerLock wind rating, StainGuard Plus algae resistance — critical under Olney's dense hardwood canopy where untreated shingles streak black within a season. Lifetime limited warranty.
Titan XT impact-rated shingles hold up to falling limbs and summer hail off upper Montgomery County's mature tree cover — and can qualify homeowners for insurance premium discounts. Heritage is the workhorse on Olney Mill and Hallowell re-roofs.
For Manor Oaks, Fair Hill, and Norbeck-corridor estates that want the look of slate or heavy shake without the weight or price tag. Warrantied through GAF Master Elite Golden Pledge.
Sealed synthetic underlayment, ice & water shield past code in every valley and eave, aluminum drip edge, chimney and skylight re-flash, and 6-nail high-wind pattern on every install — the detailing 1970s Olney roofs were never built with the first time.
Recent roofing projects across 20832 and 20833.
Freeze/thaw winters, humid summers, occasional hail, and 42+ inches of annual rainfall under a mature hardwood canopy. We spec 130 mph shingles, StainGuard Plus algae resistance, and ice & water shield past code on every install.
Original Olney Mill, Hallowell, and Williamsburg Village ventilation is almost always undersized. Every PCR re-roof includes a ridge and soffit calculation and upgrade to current Montgomery County code — the biggest single driver of longer roof life.
Every Olney re-roof requires a Montgomery County DPS permit. PCR pulls it under MHIC #140855, coordinates inspections, and delivers the closed permit with your warranty packet — you never chase the county.

Tamko Titan XT (Class 4 impact) in Weathered Wood, copper chimney flashing, and seamless aluminum gutter tie-in.

GAF Timberline HDZ with StainGuard Plus in Charcoal, full ridge & soffit ventilation upgrade, ice & water shield past code.

GAF Timberline HDZ, six sheets of decking replaced, chimney re-flash, and hand-nailed ridge cap after tree-limb damage.
"1972 Olney Mill split — third-generation roof, cooking in the attic every summer. PCR upgraded ridge and soffit ventilation, replaced four sheets of decking, and installed GAF Timberline HDZ in Charcoal. Attic temperature dropped 22 degrees in July."
"Manor Oaks estate — 38 squares, cut-up roof, dormers, three skylights. Got five bids and PCR was the only Master Elite in the group. Spec'd Class 4 Titan XT under the canopy, coordinated the Montgomery County permit, and finished in two and a half days."
"Storm dropped a limb through our Hallowell colonial roof. PCR had a tarp on it in six hours, met the adjuster the next morning, and re-roofed the whole house the following week. Cleanup was spotless — kids never found a nail."
Most Olney single-family roof replacements run $11,000-$24,000 for architectural asphalt (GAF Timberline HDZ or Tamko Heritage) on a typical 18-26 square split or colonial in Olney Mill, Hallowell, or Williamsburg Village. Larger Manor Oaks and Fair Hill estates run $22,000-$45,000+, and designer shingle installs (Camelot II, Grand Sequoia) add roughly 25-40% over a standard architectural install. Every quote is fixed, written, and line-itemed on site.
Yes. Potomac Custom Remodeling holds Maryland Home Improvement Commission license #140855, carries $2M general liability, and provides full workers' compensation coverage. We pull every Montgomery County DPS permit under our MHIC number and deliver the closed permit with your warranty packet.
We install GAF and Tamko only. As a GAF Master Elite contractor (top 2% of U.S. roofers), we qualify Olney homeowners for the GAF Golden Pledge — GAF's strongest warranty, with 25 years of PCR workmanship coverage. Tamko installs carry the Heritage Premium warranty. We do not install Owens Corning, CertainTeed, or other brands.
Most Olney single-family roofs are torn off and re-installed in one to two full days. Larger Manor Oaks and Fair Hill estates run 2-3 days. Designer shingle installs add roughly a day. We tarp landscaping, magnetically sweep the site every evening, and haul debris in covered dump trailers.
Yes. Between summer thunderstorms rolling through the upper Montgomery County corridor, occasional hail, and falling limbs off Olney's mature canopy, storm-related roof damage is common. We meet your adjuster on site, document damage with photos and drone footage, and provide the itemized scope your insurer needs. Under Maryland law only licensed public adjusters can negotiate claim amounts, so PCR focuses on accurate scopes, code-compliant repairs, and the strongest possible warranty on the new roof.
We tarp emergency leaks in Olney within 24 hours in almost every case. Call (443) 684-4448 anytime; after-hours calls route to our on-call roofer.
Yes. PCR offers 0% and low-APR financing through our lending partners on approved credit. Most Olney homeowners are approved same-day and see monthly payments well under $200 on a typical re-roof.
Almost always yes. Original 1970s ridge-and-soffit ventilation in Olney Mill, Hallowell, and Williamsburg Village was undersized by modern standards, which cooks shingles from underneath and shortens roof life 5-10 years. Every PCR re-roof includes a ridge and soffit ventilation calculation and upgrade to current code, and it's usually the single biggest driver of longer roof life.
Free on-site estimate. Fixed written quote. GAF Master Elite install with full-system detailing. Most Olney homeowners are on the schedule within 1-2 weeks.