Drive through any Greater Boston neighborhood and you’ll see all three: asphalt shingles on the colonials and capes, slate crowning the Victorians and older churches, and flat membrane roofs on triple-deckers, additions, and porch roofs. Each material exists for a reason, and each has a home style it suits best.
If you’re facing a replacement decision, the question usually isn’t “which material is best?” — it’s “which material is right for this house, this budget, and this length of ownership?” Let’s compare honestly.
The Side-by-Side View
| Asphalt shingles | Natural slate | Flat/low-slope membrane | |
|---|---|---|---|
| Typical New England lifespan | Roughly 20–30 years (architectural) | 75–100+ years | Roughly 15–30 years, by system |
| Upfront cost | Most affordable | Highest by a wide margin | Varies; priced per project |
| Best suited to | Most pitched-roof homes | Historic and high-character homes | Low-slope sections, triple-deckers, additions |
| Weight | Light — nearly any structure | Heavy — structure must support it | Light |
| Curb appeal | Wide range of colors and profiles | Unmatched, period-authentic | Function over form (usually unseen) |
Lifespans above are general expectations for our climate, not guarantees — installation quality and maintenance matter enormously.
The Case for Asphalt: The Sensible Default
There’s a reason architectural asphalt shingles cover the majority of pitched roofs in Massachusetts. They deliver the best protection-per-dollar of any mainstream material, they install efficiently, and modern architectural lines look far better than the flat 3-tab shingles of decades past — some convincingly mimic slate or wood from the street.
For New England specifically, look for shingles rated for high wind (nor’easters test every adhesive strip on the roof) and algae resistance (our humid summers streak lighter roofs). Installation quality matters as much as the shingle itself: eave and valley ice protection, proper nailing, and real ventilation are what separate a 30-year roof from a 17-year disappointment. As an Owens Corning Platinum Preferred contractor — a status that also lets us offer some of the strongest manufacturer warranty options available — and a CertainTeed credentialed installer, we work with the major shingle systems daily.
Choose asphalt if: you want reliable protection at a manageable cost, your roof is pitched, and you’re not bound by historic-district material requirements.
The Case for Slate: The Century Roof
Norwood-based and serving Greater Boston since 1974, we’re known as “the Victorian Specialists” — and you don’t earn that name without loving slate. Natural slate is stone: it doesn’t rot, burn, or fade, and on homes across Brookline, Milton, and Dedham the original slate is often still serviceable after a hundred years. When a slate roof “fails,” the culprit is usually worn flashing or fatigued fasteners — which skilled hands can repair while preserving the roof itself.
The honest tradeoffs: slate costs several times what asphalt does, it demands a structure engineered for its weight, and it requires installers who genuinely know the craft — a shrinking group. But amortized over its lifespan, slate can be surprisingly rational, and for a period home it preserves both character and value in a way no substitute quite matches.
One more honest option: if you love the look but not the price or weight, synthetic slate alternatives exist, and repairing/restoring existing slate is very often smarter than tearing it off for asphalt. Get an evaluation before assuming an old slate roof is done.
Choose slate if: you own a historic or high-character home, plan to keep it long-term (or care about its legacy), and the structure supports it.
The Case for Flat Roofing: The Right Tool for Low Slopes
This one is less a choice than a requirement: shingles need slope to shed water, so low-slope and flat sections — triple-decker roofs, porch roofs, additions, dormer tops — need a membrane system instead. Modern options like EPDM rubber, TPO, and modified bitumen have different strengths, and the right pick depends on the roof’s use, sun exposure, and details like rooftop decks or HVAC equipment.
In our climate, flat roofs earn their keep by handling two local stress tests: ponding from heavy rain and the freeze-thaw cycle working at every seam. Good drainage design and clean seam work are everything. Many Massachusetts homes actually combine systems — shingles or slate on the main roof, membrane over the porch — and the transition flashing between them is a classic leak point that deserves experienced hands.
Choose (or accept) flat roofing if: any part of your roof has little to no pitch. The real decision is which membrane and which installer.
How to Actually Decide
Ask yourself three questions: How long will you own the home? What does the architecture call for? What does the budget realistically allow — keeping in mind that financing is available, and that our Massachusetts roof replacement cost guide walks through what drives pricing? There’s no universally right answer, but for any given house there’s usually a clearly sensible one — and an inspection tells us which.
Talk It Through With Us
O’LYN Roofing installs and repairs all three systems across Greater Boston and MetroWest — family owned since 1974, MA Registration #101297, with lifetime craftsmanship warranties behind our work. Request a free estimate or call (781) 769-8599, and we’ll match the material to your home, not the other way around.