Every full replacement we sell includes the complete roof system, not just the visible shingles. Below is what comes standard on a RoofPros Maryland installation. Deck repair, chimney rebuilds, and skylight replacement are quoted separately if we find damage once the old roof is off.
We strip every layer of old roofing down to the deck boards, load it into the dumpster, and haul it away. No overlaying shingles on top of shingles, which traps heat and voids most manufacturer warranties. Disposal fees are built into your quoted price.
A self-adhering membrane installed at the eaves, valleys, and around every penetration. Maryland's freeze-thaw cycles push water sideways under shingles, and this barrier is what stops ice dams from backing water into your attic. Required by code at the eaves and standard on our installs.
We replace chimney flashing, step flashing, pipe boots, and drip edge rather than reusing old metal. Flashing damage is the number one cause of roof leaks we see, and reusing tired metal is how a new roof starts leaking in year two. All new, all sealed.
Ridge vent and soffit intake sized to your attic's net free vent area. Proper ventilation keeps the deck cool, prevents ice dams, and extends shingle life by years. We calculate the numbers rather than nailing on whatever vent is in the truck.
We run a rolling magnet across the lawn, driveway, and flower beds at least twice before leaving. Tires and bare feet are the two things that find stray roofing nails, and we would rather find them first. Ask any homeowner who has replaced a tire.
Roof Installation in Maryland is the full tear-off and replacement of your roof system, not just the shingles. That means stripping old layers down to the deck, checking for soft spots and roof rot, replacing damaged sheathing, then building back up with ice and water shield, roof underlayment, flashing, drip edge, and a ridge vent before a single shingle goes down. We install GAF, Owens Corning, CertainTeed, and IKO systems, and every job is inspected against Maryland building code compliance before we call it done.
Most Maryland homeowners call us after a roof leak shows up as a ceiling stain, or after a storm tears off shingles and leaves exposed decking. If you are searching for professional roof installation in Maryland, the honest trigger points are age (20-plus years on asphalt), granule loss in the gutters, and repeated flashing damage around chimneys and skylights. We also replace roofs on rental properties, churches, and small commercial buildings where pooling water on flat roofs has already caused interior damage.
You should know exactly what happens from the first phone call to the final walkthrough. Here is the sequence we run on every Maryland roof, whether it is a 1,200-square-foot bungalow or a 6,000-square-foot commercial flat roof.
Schedule
Call or book online — a real human picks up and confirms a 2-hour arrival window.
Diagnose
Licensed tech inspects on-site, then walks you through the cause and your options.
Fix
The job is completed to code and done right the first time — no shortcuts, no surprises.
Guarantee
Every job backed by a written workmanship warranty — and we stand behind it.
Tools & EquipmentRoofing nail gun
Drives shingles at the correct depth and angle so the nail head sits flush without cutting into the mat. We set depth per manufacturer spec on every job.
Moisture meter
Reads deck moisture content so we replace only the sheathing that is actually compromised. It is how we avoid both over-charging and leaving rot under a new roof.
Pry bar and shingle cutter
Strips old shingles cleanly and cuts new courses to length at valleys and hips. Clean tear-off protects the deck from gouges that would otherwise need patching.
Chalk line and tape measure
Lays out straight courses and confirms exposure per shingle spec. A roof that runs out of square at the ridge is a roof that leaks at the ridge.
Caulking gun and roof sealant
Seals pipe boots, step flashing, and terminations with manufacturer-approved sealant. We use the same product the warranty requires, not a generic tube from the hardware store.
Safety harness and ladder
OSHA-compliant fall protection on every steep-slope job. Our crews are tied off from the moment they step onto the roof until they step off.
Six-nail high-wind nailing pattern
In Maryland's hail and wind zones we use six nails per shingle in the field and hand-seal ridge caps, exceeding the minimum four-nail pattern. It costs more in labor and is the reason our roofs stay put through nor'easters that peel cheap installs off in one season.
Ice and water shield at eaves and valleys
A self-adhering membrane applied to the first three feet at the eaves, in every valley, and around all penetrations. Maryland building code compliance requires it at the eaves, and we extend it further because freeze-thaw cycles push water sideways.
Net free vent area calculation
We measure attic volume and calculate the required intake and exhaust vent area before choosing ridge vent and soffit vents. Proper balance prevents ice dams and keeps the deck cool, which extends shingle life by years.
Manufacturer spec-sheet installation
Every system we install follows the manufacturer's written installation instructions, including underlayment type, fastener placement, and flashing details. That is what keeps your GAF, Owens Corning, or CertainTeed warranty enforceable.
01
What we do: We inspect, document the remaining life, and give you a fixed replacement price you can hand to buyers or use in negotiation. A new roof with a transferable manufacturer warranty is one of the few home improvements that pays back at closing.
→ You sell with a documented new roof, a transferable warranty, and no inspection surprises that kill the deal.
02
What we do: We tarp the exposed area immediately, photograph every damaged slope, and provide a written scope that matches the adjuster's line items. We install to manufacturer spec so the claim does not get denied for shoddy workmanship.
→ Your claim is documented properly, the roof is dried in fast, and the replacement goes on without out-of-pocket surprises.
03
What we do: We inspect the membrane, find the low spots, and install tapered insulation to restore slope. Then we lay a new TPO membrane or modified bitumen system with heat-welded seams and proper terminations.
→ Water drains instead of sitting, the membrane warranty holds, and you stop patching the same seam every spring.
04
What we do: We check the deck board by board with a moisture meter, replace rotted sheathing, and install a complete new system with proper ventilation. If there is mold, we tell you what needs remediation before we close up the roof.
→ A dry, vented attic, new decking where it matters, and a roof that will not leak into your renovation budget.
Maryland roofs take a beating from three directions: humid summers that cook shingles from above, nor'easters that drive rain sideways under flashing, and freeze-thaw winters that form ice dams at the eaves. Building stock varies wildly. You have 1920s slate and cedar conversions in Catonsville and Gwynn Oak, mid-century ranches across Millersville and Savage, and new construction in Fulton and Owings Mills with tighter, steeper rooflines. Each one needs a different approach to underlayment, ventilation, and flashing detail. We pull permits through the county or municipal office that has jurisdiction, install to Maryland building code compliance, and coordinate the final inspection. If you are comparing the cost of roof installation in Maryland, remember that a cheap tear-off that skips ice and water shield or reuses old flashing will cost you again within a decade. We would rather quote it right the first time.
Catonsville
Older homes with steep pitches and original slate or cedar conversions that need careful deck inspection before any new system goes on.
Owings Mills
Newer subdivisions with complex rooflines, multiple valleys, and tight lot lines that require careful tarping and dumpster placement.
Prince Frederick
Southern Maryland humidity and tree cover mean more moss, algae streaking, and debris buildup in valleys and gutters.
Ellicott City
Hillside properties with wind exposure and mature trees, so impact damage and wind-lifted shingles are common after summer storms.
Freeze-thaw cycles along the eaves
Water backs up under shingles when snow melts and refreezes. We install ice and water shield at the eaves and correct attic ventilation to stop the cycle at its source.
Summer humidity and algae streaking
Warm, humid air feeds algae growth on north-facing slopes. We recommend algae-resistant shingle lines and proper ventilation to slow the streaking and keep the roof looking newer longer.
Nor'easter wind and hail events
Storms lift shingles and bruise mats, which shortens roof life even when damage is not obvious. We document everything for insurance and install with high-wind nailing patterns.
Most roof failures start small and get expensive fast. Here are the problems Maryland homeowners call us about, and what happens if you wait.
Problem
Water tracks along rafters, soaks insulation, and stains ceilings far from the actual entry point. Left alone, it rots decking and framing and grows mold in the attic.
Our Fix
We trace the leak with a moisture meter and a controlled hose test instead of guessing. Once we find the source, we repair the flashing or underlayment and verify the fix holds before we leave. If the surrounding roof is near end of life, we tell you straight.
Problem
Exposed underlayment degrades in weeks under UV. Each storm takes more shingles, and the repair bill climbs toward full replacement territory.
Our Fix
We tarp the exposed area the same day, document the damage for your insurance claim, and match replacement shingles to your existing profile where possible. If the roof is past 20 years, we price a full replacement so you can compare honestly.
Problem
Meltwater backs up under shingles, refreezes, and pushes water into the wall cavity. You get stained drywall, wet insulation, and eventually rotted sheathing.
Our Fix
We correct the root cause with proper intake and ridge ventilation plus ice and water shield at the eaves. On a full replacement, that combination stops the melt-refreeze cycle. On a repair, we at least protect the vulnerable zone.
Problem
Standing water finds every seam and termination, and ponding accelerates membrane failure. Small blisters become full-blown leaks within a season or two.
Our Fix
We install tapered insulation to restore proper slope, then lay TPO membrane or modified bitumen with heat-welded seams. Terminations get stripped in and sealed to manufacturer spec, which is what keeps the warranty valid.
A full replacement stops the cycle of patching one leak and finding another next spring. Here is what you actually get when the job is done correctly the first time.
Manufacturer-Backed Warranties
We install as a GAF Master Elite and Owens Corning Preferred Contractor, which unlocks warranties that standard installers cannot offer. That means 25- to 50-year material coverage plus our own workmanship warranty on labor. If a shingle lifts or a nail backs out, you call us, not a manufacturer hotline.
Storm-Ready Fastening
Maryland sits in a hail and wind zone, so we hand-seal ridge caps and use six nails per shingle in high-wind areas instead of the minimum four. That detail is why our roofs hold through the nor'easters that peel cheap installs off in one season. It costs a little more in labor and saves you a full replacement.
Ventilation That Stops Ice Dams
A roof installed without proper intake and ridge venting traps heat, melts snow from underneath, and refreezes at the eaves. We calculate net free vent area for your attic and install ridge vent and soffit intake to match. That single step prevents ice dams and cuts summer attic temps by 20 to 30 degrees.
Clean, Same-Week Tear-Off
Most single-family homes are torn off and dried in within one to two days, weather permitting. We run magnetic sweeps across the lawn and driveway twice, haul every shingle to the dumpster, and leave your gutters clear. You get a new roof and a yard your kids can walk on barefoot the same evening.
Typical 2026 pricing in Maryland runs $9,500 to $22,000 for an asphalt shingle replacement on a 1,800- to 2,500-square-foot home, and $18,000 to $45,000 for metal roofing panels or flat TPO membrane systems. The biggest variables are square footage, roof pitch, how many old layers come off, and whether we find rotted decking. We give you a fixed written price after the inspection, so the number does not move unless you approve a deck repair. Financing is available on approved credit.
Typical Investment Range
$9,500 - $45,000 depending on size, material, and scope
A roof installed to manufacturer spec with proper ventilation and ice and water shield lasts 25 to 50 years. The cheap bid that skips those details usually leaks within a decade and costs you the interior repairs on top of a second replacement.
What changes the price
Roof size and pitch
Square footage drives material cost, and steep pitches slow the crew down and require extra fall protection. A 12/12 pitch roof can take 40 percent longer to install than a 5/12, and that labor shows up in the quote.
Number of old layers
One layer of old shingles comes off fast. Two or three layers mean more tear-off labor, more dumpster space, and higher disposal fees. We always tear off rather than overlay, because overlaying traps heat and voids the warranty.
Deck condition
Soft or rotted sheathing gets replaced at a set per-sheet price we quote upfront. We check with a moisture meter rather than guessing, so you pay for the boards that actually need replacing and nothing more.
Material tier
Three-tab shingles are the cheapest. Architectural shingles cost more but last longer and carry better warranties. Metal roofing panels and flat membrane systems sit at the top of the range and last 40 to 70 years.
Flashing and penetrations
Chimneys, skylights, dormers, and multiple pipe boots add flashing labor and materials. A simple gable roof with one penetration is cheaper than a complex roofline with three valleys and two chimneys.
Google ★★★★★4.9
Fixed price held exactly as quoted. They replaced four sheets of rotted decking and showed me the boards before installing. Two-day job in Catonsville, clean yard, no nails. The new ridge vent made a real difference in the attic heat.
Google ★★★★★4.8
Tarped our roof the same night a storm took off half the shingles. Insurance scope matched their written estimate almost line for line. Replacement went on the next week and the crew walked the yard with a magnet twice.
BBB ★★★★★4.9
Managed two rental property roofs back to back in Owings Mills. Permits pulled, photos at every stage, tenants never inconvenienced. Honest about which roof needed replacement and which just needed flashing repair.
Yelp ★★★★★4.7
Flat roof on our garage had ponded for years. They installed tapered insulation and a new TPO membrane instead of just patching again. First heavy rain after the job and it drained perfectly. Should have done this five years ago.
Our crews hold Maryland Home Improvement Commission (MHIC) licenses and OSHA safety certification, and we carry full insurance and bonding on every job. We install as a GAF Master Elite, Owens Corning Preferred Contractor, and CertainTeed SELECT ShingleMaster, which means factory-trained installers and access to the strongest warranties in the industry. We are NRCA members and we build to Maryland building code compliance on every tear-off, including proper nailing patterns, ice barrier at the eaves, and ventilation calculations. That is the difference between a roof that passes inspection and one that leaks in year three.
Our crews cover roof installation services Maryland-wide, from Harford County down through Prince George's and Southern Maryland. We keep materials staged at multiple yards so we can schedule most inspections within 48 hours and start most jobs the same week. Whether you are in a 1920s rowhouse or a new subdivision, the same foreman runs your job from tear-off to final walkthrough.
Harford County homes near Aberdeen Proving Ground deal with wind exposure and older roofs. We handle full tear-offs, deck repair, and high-wind nailing patterns for the area's mix of ranches and colonials.
Belcamp's waterfront proximity means more humidity and algae streaking on north slopes. We install algae-resistant shingles and correct attic ventilation to slow the growth and keep roofs looking newer longer.
Brentwood's older, tightly packed homes need careful tarping and dumpster placement. We tear off down to the deck, replace rotted sheathing, and install complete systems with new flashing and drip edge.
Catonsville has some of the steepest pitches and oldest roof conversions in the region. We inspect decking carefully before installing, then build back with ice and water shield and proper ridge ventilation.
Clinton's mature tree canopy means impact damage and debris buildup in valleys. We document storm damage for insurance, replace damaged shingles, and quote full replacement when the roof is past its service life.
Deale's Chesapeake Bay exposure drives wind-driven rain under flashing. We replace chimney and step flashing on every job and use six-nail patterns in the field to keep shingles locked down through nor'easters.
Ellicott City's hillside properties take wind from multiple directions. We install high-wind-rated systems, correct ventilation, and coordinate county permits and final inspections as part of the job.
Fulton's newer subdivisions have complex rooflines with multiple valleys and dormers. We handle the flashing details those roofs demand and install to manufacturer spec so the warranty stays valid.
Gwynn Oak's older housing stock often has two or three layers of old shingles. We tear off completely, inspect the deck board by board, and rebuild with modern underlayment and ventilation.
Hyattsville's historic homes need careful flashing work around original dormers and chimneys. We match profiles where possible and install complete systems built to Maryland building code compliance.
Lanham's mix of mid-century ranches and newer builds means varied roof ages. We inspect, document remaining life, and give you a fixed written price whether you need a repair or a full replacement.
Millersville homes sit between Baltimore and Annapolis, exposed to both summer humidity and winter freeze-thaw. We install ice and water shield at the eaves and balance attic ventilation to prevent ice dams.
Owings Mills subdivisions have steep, complex rooflines with tight lot lines. We plan dumpster placement carefully, tarp overnight if needed, and keep the same crew on the job from start to finish.
Prince Frederick's Southern Maryland humidity and heavy tree cover mean moss and debris buildup. We clear valleys, install algae-resistant shingles, and correct ventilation to keep the deck dry.
Savage's older homes near the river corridor see more moisture and flashing wear. We replace all flashing on every job and install ice and water shield in valleys and at the eaves to stop water intrusion.
Real answers to the questions we hear most often from local homeowners and property managers.
Full tear-off and rebuild when your existing roof is beyond patching. We strip to the deck, replace rotted sheathing, and install a complete new system with ice and water shield, underlayment, and ridge vent. Most Maryland homes qualify for a 25- to 50-year manufacturer warranty.
View Roof ReplacementTargeted fixes for missing shingles, flashing damage, and small leaks that do not justify a full replacement. We match your existing shingle profile where possible and seal every penetration with roof sealant. Most repairs are done in a single visit and cost a fraction of a replacement.
View Roof RepairWe trace leaks to the source with a moisture meter and hose test rather than guessing from the ceiling stain. Common culprits are chimney flashing, pipe boots, and valley metal. We repair the leak, verify it holds, and tell you honestly if the surrounding roof has life left.
View Roof Leak RepairA full top-to-bottom assessment with photos, attic decking check, and a written report. We flag granule loss, flashing damage, ventilation issues, and soft spots before they become leaks. Ideal before buying a home or after a major storm passes through your neighborhood.
View Roof InspectionStorm damage, tree strikes, and sudden leaks get tarped the same night to stop water intrusion. We photograph the damage for your insurance claim, then schedule the permanent repair or replacement. Available 24/7 across Maryland when weather turns.
View Emergency Roofing ServicesHail damage, wind-lifted shingles, and impact strikes repaired to manufacturer spec. We document everything for your insurance adjuster and install to the same standard as a full replacement. If the damage is widespread, we will tell you when a claim beats paying out of pocket.
View Storm Damage Roof RepairCall (833) 409-1163 any time, day or night. We answer emergency calls 24/7 and schedule standard estimates Monday through Friday, usually within 24 to 48 hours. You can also email info@roofprosmaryland.com with photos of the problem and we will get back to you the same business day.
Phone
(833) 409-1163Address
Maryland
Hours
Mon–Fri: 7AM – 7PM
Sat: 8AM – 4PM
Sun: Emergency Only
24/7 Emergency Available
