Asphalt vs. Metal vs. Synthetic Cedar vs. Synthetic Slate: Which Roofing Material Is Right for Your Maryland Home?

If you're planning a full roof replacement, you've probably noticed there's more than one way to do it. Asphalt shingles, metal panels, synthetic cedar shake, and synthetic slate all protect your home, but they differ a lot in lifespan, cost, and how much upkeep they need. There's no single “best” material for every homeowner. It depends on your budget, how long you plan to stay in the home, and how much maintenance you want to take on.

Here's a straightforward, side-by-side look at all four, based on real lifespan and cost data, so you can have a more informed conversation with your roofer before you replace.

Asphalt Shingles: The Popular, Budget-Friendly Choice

Asphalt shingles remain the most common roofing material in the country, and for good reason. They typically last 20 to 30 years, cost less upfront than the other three options, and come in the widest range of colors and styles, which is part of why CertainTeed's shingle lineup alone covers dozens of looks. For an average home, a full asphalt replacement typically runs $5,000 to $10,000 installed.

The tradeoff is lifespan. Asphalt shingles wear faster than metal, synthetic cedar shake, or synthetic slate, and they're more prone to weather-related damage like cracking, curling, or granule loss over time. For homeowners who want the lowest upfront cost and don't mind replacing again in two to three decades, asphalt is usually the practical choice.

Metal Roofing: Built for the Long Haul

Metal roofing typically lasts 40 to 70 years, roughly double an asphalt roof's lifespan, and holds up better against wind, hail, and fire. It also reflects heat rather than absorbing it, which can help with cooling costs in Maryland's humid summers. On an average home, installed cost typically runs $10,000 to $25,000, two to three times more than asphalt upfront. For a full breakdown of how the two compare cost-for-cost, see our Metal Roof vs. Shingles comparison guide.

Synthetic Cedar Shake: The Look of Wood, Without the Upkeep

Synthetic cedar shake is a composite (often engineered polymer or recycled material) made to replicate the look and texture of real split cedar, without the rot, insect, and moisture problems that come with actual wood in a humid climate like Maryland's. Lifespan typically runs 40 to 50 years, and installed cost typically runs $9 to $20 per square foot depending on the manufacturer and style.

Because it's not real wood, synthetic cedar shake needs far less upkeep than traditional shake: no annual wood-preservative treatments, and much better resistance to rot, insects, and fire. Homeowners who love the cedar look but don't want the maintenance schedule that comes with the real thing tend to be happiest with this choice.

Synthetic Slate: The Look of Stone, at a Fraction of the Weight

Synthetic slate is a composite material engineered to replicate natural slate's appearance and durability without the extreme weight or cost of quarried stone. Lifespan typically runs 40 to 50 years, with many manufacturers backing it with warranties of 50 years or longer. Installed cost typically runs $9 to $16 per square foot, roughly half the cost of natural slate.

The biggest practical difference from natural slate is weight: synthetic slate runs about 150 to 300 pounds per roofing square, versus 800 to 1,500 pounds for natural slate, a reduction of roughly 70%. That means most homes can have synthetic slate installed without the structural reinforcement natural slate often requires, while still getting the look.

Synthetic slate tends to make the most sense for homeowners who want the slate aesthetic, especially on a historic or premium-style home, without the added cost and structural work that comes with real stone.

Comparing the Four at a Glance

Material	Typical Lifespan	Installed Cost Range	Maintenance Level
Asphalt Shingles	20–30 years	$5,000–$10,000 (avg. home)	Low to moderate
Metal	40–70 years	$10,000–$25,000 (avg. home)	Low
Synthetic Cedar Shake	40–50 years	$9–$20 per sq. ft. installed	Low
Synthetic Slate	40–50+ years	$9–$16 per sq. ft. installed	Low (no structural work typically needed)

What Affects Your Decision Beyond the Material Itself

Maryland's Climate

Maryland sees humid summers, freeze-thaw winters, and periodic storm damage, all of which stress a roof differently depending on the material. Because synthetic cedar and synthetic slate are engineered composites rather than real wood or stone, both hold up consistently across our seasonal swings without the moisture-related concerns real wood shake can have in a humid climate.

Home Style and How Long You Plan to Stay

A material that fits a colonial or historic home aesthetically (like synthetic slate or synthetic cedar) may not make sense for a homeowner planning to sell in five years, while a longer horizon changes the math on a higher-upfront-cost material like metal or synthetic slate paying for itself in avoided replacements.

Why Work With a Contractor Who Installs All Four

Restoration Roofing Co. is a family-owned, full-replacement roofing contractor serving homeowners throughout Howard County and the surrounding Maryland region. We're a CertainTeed SELECT ShingleMaster, ranked the #3 CertainTeed installer in Maryland out of roughly 2,500 companies, and MHIC-licensed (#137778). In 2025, we were also named a CertainTeed Governor's Award winner, a national recognition for excellence in customer service, warranty sales, and partnership with CertainTeed. Asphalt shingle installs through us carry a 25-year labor warranty and a 50-year material warranty backed directly by CertainTeed. We also install metal, synthetic cedar shake, and synthetic slate roofs.

Because we work in all four materials rather than specializing in just one, our estimate walks through the real tradeoffs for your specific home instead of steering you toward whatever we happen to install most.

Frequently Asked Questions

Which roofing material lasts the longest?

Metal is the longest-lasting of the four at 40 to 70 years. Synthetic cedar shake and synthetic slate typically run 40 to 50 years, many with manufacturer warranties of 50 years or more, while asphalt shingles typically last 20 to 30 years.

Is metal roofing worth the higher upfront cost?

For homeowners planning to stay long-term, metal's 40-to-70-year lifespan and low maintenance needs can offset the higher initial investment compared to asphalt. It depends on your time horizon and budget.

Can synthetic cedar shake handle Maryland's humidity?

Yes. Because it's a composite material rather than real wood, synthetic cedar shake resists rot, insects, and moisture damage far better than traditional wood shake, without the annual treatments real cedar needs to hold up in a humid climate.

Do I need extra structural support for a synthetic slate roof?

Usually not. Synthetic slate weighs about 150 to 300 pounds per roofing square, roughly 70% less than natural slate's 800 to 1,500 pounds, so most homes can have it installed without the structural reinforcement natural slate often requires.

How do I decide which material is right for my home?

It comes down to budget, how long you plan to stay in the home, and how much maintenance you want to take on. A no-pressure estimate from a contractor who installs all four materials gives you an honest comparison instead of a pitch for whichever one that contractor specializes in.

Choosing the right roofing material shouldn't be a guessing game. Call us at 410-489-7663 or book your free roof replacement estimate today, and we'll walk you through exactly which material fits your home, budget, and timeline, no pressure, no pitch.