How Long Does a Roof Last in Maryland?

In Central Maryland, most asphalt shingle roofs last between 15 and 25 years, depending on the material and exposure. Factors like humidity, wind, snow, and summer heat all play a role.

Here’s a quick guide to expected roof lifespans in Maryland’s climate:

• 3-tab asphalt shingles: 15–20 years
• Architectural shingles: 20–30 years (standard at Allied)
• Metal roofing: 30–50 years

But material isn’t everything — installation quality and ongoing maintenance make a huge difference.

How Maryland’s Climate Impacts Your Roof

Maryland experiences a wide range of weather, which puts extra strain on your roof:

• Summer heat: UV rays and thermal expansion cause shingles to dry, curl, and crack
• Winter snow and ice: Ice dams can cause hidden water infiltration
• High winds: Storms can lift shingles and expose underlayment
• Humidity and rain: Trap moisture and promote mold and rot

This extreme seasonality means Maryland roofs often wear out faster than in more temperate regions.

Warning Signs Your Roof Is Reaching the End

Don’t wait until there’s a leak to act. Watch for these signs:

• Curling, cracked, or bald shingles
• Granule loss in gutters or around downspouts
• Dark streaks or moss on shingles
• Interior ceiling stains or mold
• Visible sagging or dips
• Rising energy bills (poor attic insulation due to roof wear)

If your roof is 15–20+ years old and showing one or more of these symptoms, replacement is likely the smarter (and safer) option.

Why Replace Before It Fails?

Waiting too long leads to:

• Costly water damage inside the home
• Mold remediation bills from attic leaks
• Lower resale value or failed inspections
• Insurance claim denials due to neglect

Replacing early protects your investment and avoids being stuck in an emergency repair situation.

How Allied Remodeling Helps Maryland Homeowners Stay Ahead

We know the climate. We know the codes. And we’ve installed thousands of Maryland roofs the right way — using materials built to handle the Mid-Atlantic extremes.

Our $3,999 roof replacement includes:

• Full tear-off (1 layer)
• Up to 14 squares of architectural shingles
• Synthetic underlayment, ice & water shield, drip edge
• Lifetime labor warranty
• No deposit required

Serving Central Maryland with Roofs That Last

From Howard and Montgomery Counties to Carroll, Anne Arundel, and Baltimore, we help homeowners plan smart roof replacements that won’t break the bank or cause disruption.

Think Your Roof Is Nearing the End?

Let us inspect it — for free.
We’ll give you an honest assessment, clear estimate, and show you if our $3,999 promo applies to your home.