ROOFING TYPE

Metal Roofing

50-70 year expected lifespan, often the last roof you'll ever install

Metal roofing installation in Seattle. Standing seam and corrugated options with 50-70 year lifespan. Energy-efficient, fire-resistant, and virtually maintenance-free.

Cost $9-$14/sq ft Lifespan 50-70 years Maintenance Very Low Best for Durability & energy efficiency
25+ Years in Business
15,000+ Projects Completed
4.7★ Google Rating (171 Reviews)
10-Year Workmanship Warranty

The Premium Roofing Choice for the Pacific Northwest

Metal roofing has grown from a niche option to one of the most popular premium roofing choices in the Seattle area. With a 50-70 year expected lifespan, virtually zero maintenance, and natural resistance to moss and algae, a metal roof is often the last roof you’ll ever need to install.

K Single Corp has installed metal roofs across King, Snohomish, and Pierce County since 2007. We specialize in standing seam systems, the gold standard for residential metal roofing, and also offer corrugated and metal shingle profiles for homeowners who want the durability of metal with a more traditional appearance.

Standing Seam vs. Corrugated vs. Metal Shingles

Standing Seam is the premier metal roofing profile. Panels run vertically from ridge to eave with raised seams that lock together, creating a clean, modern look with no exposed fasteners. Standing seam expands and contracts freely with temperature changes, making it the longest-lasting metal option. This is what most Seattle-area homeowners choose.

Corrugated Metal uses overlapping panels with exposed fasteners. It’s less expensive than standing seam and works well for simpler roof lines. The main tradeoff is that exposed fasteners require periodic inspection and may need re-sealing after 15-20 years.

Metal Shingles mimic the look of traditional shingles, slate, or wood shake while delivering metal’s durability. They’re a good choice for historic homes or HOA-restricted neighborhoods where standing seam’s modern look isn’t allowed.

Why Metal Works Exceptionally Well in Seattle

The Pacific Northwest climate is actually ideal for metal roofing:

  • Rain shedding: Metal’s smooth surface sheds water faster than any other roofing material, reducing moisture exposure and eliminating the standing-water problems that plague flat or low-slope shingle roofs.
  • Moss resistance: Unlike composition shingles and cedar, moss cannot grow on metal surfaces. This eliminates one of the biggest maintenance headaches for PNW homeowners.
  • Wind performance: Properly installed standing seam metal roofs are rated for 140+ mph winds, well above what even our worst winter storms produce.
  • Energy efficiency: Metal reflects solar radiation, keeping attics cooler in summer. In winter, the tight panel seams and solid underlayment reduce heat loss.

Cost and Long-Term Value

A metal roof costs more upfront, typically 2-2.5x the price of composition shingles. But the math changes when you consider lifespan:

Composition ShinglesStanding Seam Metal
Installed cost (2,200 sq ft)~$15,000~$28,000
Expected lifespan30 years60 years
Cost per year~$500/year~$467/year
MaintenancePeriodic moss removalVirtually none
Replacements over 60 years2 roofs1 roof

Over 60 years, a metal roof actually costs less than two rounds of composition shingles, while requiring almost no maintenance in between.

Standing seam metal roof panels by K Single

50+ Year Lifespan, Zero Moss

Standing seam metal is virtually immune to the moss and algae that plagues other roofing materials in the Pacific Northwest. With a 50+ year expected lifespan and near-zero maintenance, many homeowners find metal to be the last roof they'll ever need.

Metal roof panel detail and profile

Modern Aesthetics, Superior Performance

Today's metal roofing comes in a wide range of profiles and colors that complement any architectural style, from modern farmhouse to contemporary to traditional. Metal roofs also reflect heat, improving your home's energy efficiency.

Metal Roofing: Pros & Cons

Advantages

  • 50-70 year lifespan, often the last roof you'll ever need
  • Virtually maintenance-free once installed
  • Excellent energy efficiency, reflects solar heat, reducing cooling costs
  • Class A fire rating (highest possible)
  • Moss and algae cannot grow on metal surfaces
  • Fully recyclable at end of life, environmentally friendly
  • Sheds snow and rain efficiently

Considerations

  • Higher upfront cost than composition shingles
  • Requires specialized installation skills
  • Can be louder during heavy rain without proper underlayment
  • Denting possible from large hail or fallen branches
  • Fewer local contractors have metal roofing experience

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Recent Metal Roofing Projects

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Metal Roofing FAQ

How much does a metal roof cost in the Seattle area?

For a typical 2,000-2,500 sq ft Seattle-area home, a standing seam metal roof runs approximately $22,000-$35,000 installed. Corrugated metal panels are less expensive at $18,000-$28,000. While the upfront cost is higher than shingles, the 50-70 year lifespan means you may never need another roof, making the lifetime cost per year actually lower than composition shingles.

Is a metal roof noisy when it rains in Seattle?

Not with proper installation. Modern metal roofs installed over solid sheathing with premium synthetic underlayment are no louder than shingle roofs during rain. The noise concern is a holdover from agricultural metal buildings with no sheathing or insulation. Your home's existing attic insulation further dampens any sound.

Will a metal roof rust in Seattle's wet climate?

No. Modern residential metal roofing is made from galvanized steel or aluminum with factory-applied coatings (Kynar 500 or equivalent) that resist corrosion for 40+ years. Standing seam panels have no exposed fasteners, eliminating the most common rust entry point. We warrant our metal installations for 10 years on labor, and manufacturer paint warranties typically run 30-40 years.

Can you install a metal roof over my existing shingles?

Technically yes, but we don't recommend it. Overlay traps moisture, hides deck damage, and can void warranties. For the best long-term result, we always recommend a full tear-off before metal installation. This lets us inspect and repair the deck, install proper underlayment, and ensure the metal panels lay flat and true.

Does a metal roof increase home value in Seattle?

Yes. Studies consistently show metal roofs recover 85-95% of their cost at resale, often more in the Pacific Northwest where buyers value low-maintenance, long-lasting materials. A metal roof is also a strong selling point because it signals to buyers that they won't need to budget for a roof replacement.

How long does a metal roof actually last in the Pacific Northwest climate?

In the PNW, a quality standing seam metal roof typically lasts 50-70 years, and many last even longer with minimal care. Our wet climate is actually easier on metal than hot, sunny climates that degrade paint coatings faster. The biggest factor in metal roof longevity here is the quality of the coating system, and Kynar 500 finishes are the industry standard for maximum durability.

What maintenance does a metal roof need in Seattle?

Metal roofs require very little maintenance. We recommend an annual visual inspection, clearing any debris that collects in valleys or behind penetrations, and checking that gutters drain properly. Unlike shingle roofs, metal does not need moss treatment or granule monitoring. Corrugated metal roofs with exposed fasteners should have those fasteners checked and re-sealed every 15-20 years.

What roof pitches work best for metal roofing?

Standing seam metal can be installed on roof pitches as low as 1:12 with proper detailing and sealant at the seams, making it one of the few residential options for low-slope roofs. Steeper pitches of 3:12 and above are ideal because they shed water and snow more quickly. Corrugated metal panels require a minimum of 3:12 pitch due to their exposed fastener design.

What underlayment is used under a metal roof?

We install a high-temperature synthetic underlayment rated specifically for metal roofing, since standard underlayment can degrade from heat buildup under metal panels. Ice-and-water shield membrane is applied at eaves, valleys, and all penetrations for added moisture protection. Proper underlayment is also the key to eliminating rain noise, acting as both a moisture barrier and a sound-dampening layer.

How long does a metal roof installation take?

A standing seam metal roof installation on a typical Seattle-area home takes 4-7 days, which is longer than a shingle installation because panels are custom-measured and precision-fitted. Corrugated metal installations are slightly faster at 3-5 days. We schedule metal installations during dry weather windows whenever possible, since the panels and trim require careful handling in wet conditions.

Can a metal roof be repaired if a panel is damaged?

Yes, though metal roof repairs require a skilled installer. Individual standing seam panels can be unclipped and replaced without disturbing the rest of the roof, and small dents or scratches can be sealed and touch-up painted. Corrugated panels are even simpler to replace since they are fastened rather than interlocked. Repair costs are typically higher per incident than shingle repairs, but damage occurs far less frequently.

How energy efficient is a metal roof compared to shingles?

Metal roofs are significantly more energy efficient than standard shingles because they reflect a large portion of solar radiation rather than absorbing it. A light-colored metal roof can reduce cooling costs by 10-25% in summer, and the tight panel seams also reduce air infiltration in winter. Many metal roofing products qualify for Energy Star ratings, which can make them eligible for utility rebates in the Seattle area.

Do insurance companies offer discounts for metal roofs in Washington state?

Yes, many Washington state insurers offer premium discounts of 10-35% for metal roofs because of their Class A fire rating and superior wind and impact resistance. The exact discount varies by carrier and policy type, so we recommend calling your insurer before installation to confirm your specific savings. Over the life of a metal roof, these insurance savings can add up to thousands of dollars.

How does metal roofing handle heavy PNW rainstorms and windstorms?

Metal roofing is one of the best-performing materials in Pacific Northwest weather. Standing seam panels interlock with no exposed fasteners, creating a continuous barrier that resists wind-driven rain even at 140-plus mph. The smooth, hard surface sheds water faster than any other residential roofing material, which means less time for moisture to work its way under the roof system.

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