Asphalt Shingle Roofing

We specialize in top-quality shingle roof installations that deliver outstanding value.

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The Right Shingle, Installed with Precision

Asphalt shingles are the most widely installed roofing material in the Philadelphia suburbs — and for good reason. When the right product is properly specified and installed, a shingle roof is a reliable, weather-tight system that protects your home for 25 to 50 years depending on the product tier. The challenge is that not all shingles are equal, and not all installations are either. The gap between a roof that performs for four decades and one that starts failing at fifteen isn’t usually the material — it’s the specification and the installation behind it.

At Gray Oak Roofing & Exteriors, we install architectural, designer, and impact-resistant shingle systems for homeowners across Montgomery, Delaware, and Chester Counties. Every project starts with what your home actually needs — the right product for your roof’s pitch, exposure, and long-term performance requirements, installed as a complete system from the deck up.

What We Offer

Full Roof Replacement

A full replacement means removing the existing shingles and underlayment down to the roof deck, inspecting and repairing the deck before anything goes back on, and installing a complete new roofing system — underlayment, ice and water protection at the eaves and valleys, properly lapped synthetic underlayment over the field, and finish shingles installed to manufacturer specification. This is the only approach that gives you a genuine fresh start and a warranty that means something.

Roof Repair & Storm Damage

Not every roofing problem requires a full replacement. A failed flashing, a damaged section of shingles, a leaking valley, or localized storm and hail damage — these are legitimate repair candidates on a roof that’s otherwise performing well. We diagnose the actual source of the problem rather than treating symptoms, and we give you a clear assessment of whether repair is the right answer or whether the underlying condition of the roof makes replacement the more cost-effective path.

Why Shingle Roofing in This Region

The Philadelphia suburbs are a demanding environment for roofing. Summer heat and UV exposure degrade shingle granules over time. Humid conditions promote algae and moss growth on north-facing slopes and in shaded areas — a cosmetic issue that, left untreated, becomes a moisture retention problem. Winters cycle repeatedly through freezing and thawing, stressing flashing seals and expanding any moisture that’s found its way into the system. And severe storms — the kind that produce hail and high sustained winds — are a regular occurrence across Montgomery, Delaware, and Chester Counties.

Specifying the right shingle for this climate means looking beyond price per square. Heavier architectural shingles with higher wind ratings hold up significantly better through the storm events common in our region. Algae-resistant shingles with copper or zinc granules address the moss and algae growth that affects homes throughout the wooded communities and shaded lots across Havertown, Narberth, Haverford, and the broader service area. Impact-resistant shingles with Class 4 ratings offer meaningful protection against hail damage and, on many policies, a reduction in homeowner’s insurance premiums worth factoring into the total cost of the project.

Getting the most from a shingle roof in this climate also means executing every system detail correctly — proper ice and water shield coverage at eaves, valleys, and penetrations; correctly lapped synthetic underlayment over the field; ridge ventilation that balances attic airflow; and flashing at every wall, chimney, and penetration that’s integrated with the roof system rather than just caulked over. These are the details that separate a roof that performs for 40 years from one that’s back in trouble at 15.

The Gray Oak Standard

A shingle roof is only as good as the care behind it — the deck inspection before the first layer goes down, the flashing work at every transition, the ridge installation that determines how the whole system breathes. These aren’t details we delegate or rush through. They’re the difference between a system that performs for decades and one that fails quietly while you’re not looking.

Every shingle roofing project is managed personally from estimate to completion — one contact, one standard, start to finish. We select materials we stand behind, install them the way they’re meant to be installed, and treat your home with the same standard we’d expect for our own. When the work is done you’ll know exactly what was installed and why — and you’ll have a direct line back to us if you ever need it.

Shingle Types

Architectural / Dimensional Shingles

Architectural shingles — also called dimensional or laminate shingles — are the baseline specification for quality residential roofing and the product we install on the majority of replacement projects. Multi-layer construction creates a shadow line that mimics the depth and texture of wood shake at a fraction of the cost and without the maintenance demands. Properly installed architectural shingles from a quality manufacturer carry warranties of 30 years to lifetime on the product, with wind ratings typically starting at 110 mph. The range within the architectural category is significant — weight, granule quality, and dimensional consistency vary considerably between manufacturers and product lines, and those differences show up in long-term performance.

Designer / Luxury Shingles

Designer shingles are the premium tier of the asphalt shingle category — heavier, thicker, with more pronounced shadow lines and profiles that closely replicate the appearance of wood shake or natural slate at a significantly lower installed cost. On homes where the roof is a prominent architectural feature — steep pitches, large visible roof planes, prominent street presence — a designer shingle makes a meaningful visual difference over a standard architectural product. Weight and dimensional stability also translate to better long-term performance in demanding conditions. Designer shingles are increasingly specified on Main Line renovations where the roof’s contribution to curb appeal and home character is a genuine priority.

Impact-Resistant Shingles

Class 4 impact-resistant shingles are manufactured with a modified asphalt formulation or a rubberized polymer layer that resists cracking and bruising under hail impact. In a region that experiences regular severe storm activity, the long-term performance difference between a standard architectural shingle and a Class 4 product is meaningful — particularly on homes where hail damage has been an issue in the past. Beyond performance, many homeowner’s insurance carriers offer premium discounts for Class 4 roofing products that can offset a significant portion of the cost differential over time. Worth a conversation with your insurance agent before finalizing the product selection.

It's a System, Not a Surface

A shingle roof is only as good as the system beneath it. The finish shingle is the visible layer — but what determines long-term performance is everything underneath it, and how all of it works together.

Roof Deck

The deck is the foundation everything else is attached to. Before any new material goes down, we inspect the existing deck for soft spots, delamination, deteriorated sheathing, and any areas where moisture has compromised structural integrity. Damaged sections are repaired before installation begins.

Ice & Water Shield

A self-adhering waterproof membrane applied at the eaves, in the valleys, and around all penetrations. Coverage requirements vary by municipality — we apply ice and water shield wherever the home’s exposure and local code requirements call for it, and extend coverage beyond minimums wherever conditions warrant. It is the last line of defense against water intrusion from ice dams and wind-driven rain.

Underlayment

Synthetic underlayment over the field provides a secondary moisture barrier between the deck and the finish shingles. Synthetic products are significantly more durable than traditional alternatives — they resist tearing during installation, hold up better under UV exposure during the installation window, and provide better slip resistance for the installation crew working on the roof. We use synthetic underlayment as standard on all installations.

Ventilation

A properly balanced attic ventilation system — intake at the soffits, exhaust at the ridge — is critical to shingle longevity and to preventing the heat buildup and moisture accumulation that accelerate deck deterioration. We assess existing ventilation at every replacement project and address deficiencies before the new roof goes on. Installing new shingles over an inadequately ventilated attic voids most manufacturer warranties and shortens roof life significantly.

Flashing

Flashing is where most roofs fail. Every wall, chimney, skylight, pipe penetration, and valley is a potential water entry point if the flashing isn’t correctly detailed and integrated with the roofing system. We use step flashing, counterflashing, and valley flashing in galvanized steel, aluminum, or lead-coated copper depending on the application — and we integrate every piece with the underlayment system rather than relying on sealant to do structural work.

Get Started - Shingle Roofing

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As a local roofing company, we’re here to help you protect what matters most, your home.

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Wynnewood, PA
Phone: (610) 995-6260
Email: adam@grayoakroofing.com

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Signs Your Shingle Roof Needs Attention

Signs Your Shingle Roof Needs Attention

  • Shingles that are curling at the edges or corners — a sign of age, inadequate ventilation, or moisture in the deck
  • Granule loss visible in gutters or at downspout outlets — granules protect the asphalt layer from UV degradation
  • Visible daylight in the attic — a gap in the roof plane that is also a gap in the weather envelope
  • Active leaks or water staining on ceilings — often originating at flashings rather than in the shingle field
  • Shingles that are cracked, broken, or missing sections
  • Algae or moss growth on the roof surface — particularly on north-facing slopes and shaded areas
  • A roof that is 20 or more years old and has never been fully assessed
  • Storm or hail damage — even damage that isn't immediately visible can compromise shingle integrity and accelerate failure

What to Expect

  • Roof Assessment & Estimate — We inspect your roof from the exterior and assess the attic where accessible. We give you a clear picture of the roof's condition and a written estimate with product options.
  • Product Selection — We walk you through the shingle options that make sense for your home — architectural, designer, or impact-resistant — and the system components beneath them. We explain the differences plainly and let you make an informed decision.
  • Scheduling — We commit to a start date and communicate clearly if anything changes. One point of contact throughout.
  • Tear-Off & Deck Inspection — Existing shingles and underlayment removed, deck inspected and repaired as needed before any new material is installed.
  • System Installation — Ice and water shield, synthetic underlayment, and finish shingles installed in sequence, with all flashing detailed and integrated at every transition.
  • Clean-Up & Final Walkthrough — Site thoroughly cleaned including magnet sweep for fasteners. Final walkthrough with you to confirm the work and address any questions.
  • Follow-Up — Direct line back to the person who managed your project if anything comes up after completion.
What to Expect: Shingle Roofing

Frequently Asked Questions

Some frequently asked questions and useful answers.

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How long does a shingle roof last in the Philadelphia area?

A properly installed architectural shingle roof in our climate typically performs for 25 to 35 years. Designer and heavier shingle products, particularly those with lifetime warranties, can perform well beyond that with reasonable maintenance. The factors that shorten shingle life most significantly are inadequate attic ventilation, improper installation, and deferred maintenance on flashings and penetrations. A roof that was installed correctly and is properly ventilated will consistently outperform one that wasn’t, regardless of the warranty on the shingle itself.

Technically yes — most building codes permit one layer of new shingles over one existing layer. The tradeoffs are meaningful, however. Layering adds weight to the structure, traps heat between the layers which accelerates shingle degradation, and prevents inspection of the deck — meaning any existing deck damage or ventilation deficiencies go unaddressed beneath the new installation. The cost savings at installation are modest relative to the long-term performance difference a full tear-off provides.

Age and overall condition are the primary factors. A roof under 15 years old with isolated damage — a failed flashing, a section of wind-lifted shingles, a damaged valley — is a good repair candidate if the rest of the system is sound. A roof over 20 years old with widespread granule loss, multiple failed areas, or compromised ventilation is typically more cost-effective to address with a full replacement. We’ll give you a clear picture of the roof’s condition at the inspection, including our view on how much useful life remains if repair is a viable option.

Architectural shingles are the right choice for most homes. The upgrade to a designer product makes the most sense when the roof is a prominent visual element — steep pitch, large visible plane, prominent street presence — and when the appearance difference is meaningful to the homeowner and the property. Designer shingles also tend to be heavier and more dimensionally stable, which translates to better long-term performance in demanding conditions. We’ll show you samples of both at the estimate and give you our view on whether the upgrade makes sense for your specific home.

For many homeowners in our area, yes — particularly when the insurance premium discount is factored in. Class 4 impact-resistant shingles typically carry a modest cost premium over standard architectural products. Many carriers in Pennsylvania offer discounts of 10 to 30 percent on the wind and hail portion of the homeowner’s premium for Class 4 roofing. On a home with meaningful insurance costs, that discount can pay back the upgrade cost within a few years. We recommend calling your insurance agent before the project to confirm what discount applies to your policy — it’s a conversation worth having before finalizing the product selection.

Most single-family homes in our service area are a one to two day project for a full tear-off and replacement. Larger homes, complex rooflines with multiple penetrations and transitions, or projects where significant deck repair is needed may extend to three days. We give you a realistic timeline at the estimate and communicate clearly if anything changes once the tear-off reveals deck conditions.

Algae — the dark streaking common on north-facing and shaded roof slopes — is caused by a type of cyanobacteria called Gloeocapsa magma that feeds on the limestone filler in asphalt shingles. Moss growth follows in persistently shaded and damp areas where organic debris accumulates. Both are more prevalent in the wooded and shaded lots common throughout communities like Haverford, Narberth, and Gladwyne. Algae-resistant shingles with copper or zinc granules inhibit growth significantly. Existing algae and moss can be treated with appropriate cleaning solutions — pressure washing is not recommended as it strips granules and shortens shingle life.

Significantly — and it’s one of the most underappreciated factors in shingle longevity. An inadequately ventilated attic allows heat to build up in summer, reaching temperatures that accelerate the degradation of the asphalt binders in the shingles above it. In winter, warm moist air from the living space rises into an unventilated attic, condenses on the cold deck, and creates the moisture conditions that lead to deck rot and premature shingle failure. Most manufacturer warranties explicitly require adequate ventilation — installing new shingles over a poorly ventilated attic without addressing the deficiency shortens roof life regardless of the product specified. We assess ventilation at every replacement project.

Ice dams form when heat loss through the roof deck melts snow on the upper portion of the roof, which then refreezes at the colder eaves and builds into a dam of ice. Water backing up behind the dam forces its way under the shingles and into the structure. Ice dams are caused by heat loss through the roof — a function of attic insulation and ventilation — rather than by the shingles themselves. Ice and water shield membrane at the eaves provides the last line of defense against water intrusion when dams do form, but the correct long-term solution is addressing the attic conditions that allow dams to develop. We assess these conditions as part of every roof replacement and flag deficiencies that should be addressed.

The most important factors are licensing and insurance, references from recent projects in your area, and a contractor who can clearly explain what they’re installing and why. Be cautious of estimates that arrive the day after a storm — storm-chasing contractors who follow severe weather events often cut corners and disappear before problems surface. For homes in Lower Merion and the surrounding communities, a contractor who works regularly on the home styles and materials common in this market is worth seeking out specifically. The colonials, Tudors, and older homes throughout Havertown, Bryn Mawr, Wynnewood, and the broader service area have specific requirements — particularly around flashings and system integration — that a contractor familiar with this market will understand intuitively.