Roof Coverings Part II: Steel Roofing

In last week’s post, we explored roofing underlayment and shingles. At Quality Homes & Renovations, we also frequently use steel roofing for its durability and aesthetic appeal. This guide provides an overview of steel roofing types, its advantages and disadvantages, and how it compares to shingles.

Types of Steel Roofing

Exposed Fastener Panels

Exposed fastener panels, commonly known as corrugated steel, agricultural steel, or simply a tin roof, are widely used in Renfrew County for homes, barns, and commercial buildings.

Key features include:

• Design: Corrugated steel panels are 31” to 36” wide and installed by screwing through their face into the roof sheathing. Screws are spaced 24” apart and come with rubber washers to prevent leaks.
• Thickness: Panels range from 24-gauge to 29-gauge steel, with thicker options being more durable and expensive.
• Installation: While straightforward, precise prep and layout are critical, as steel is less forgiving to mistakes compared to shingles.
• Maintenance: Minimal, though screws may loosen and washers can harden over time, requiring inspection and replacement after about the same lifespan as a laminated shingle roof.
• Slopes: Suitable for roof slopes of 3/12 or higher.

Hidden Fastener Panels (Standing Seam)

Hidden fastener panels, often referred to as standing seam roofing, feature concealed fasteners and interlocking panels for a sleek, waterproof finish.

Key features include:

• Aesthetic Appeal: Provides a heritage look, ideal for both classic and modern designs, including low-slope roofs as shallow as 2/12.
• Installation: More complex, requiring custom trims for gables, eaves, and valleys, which adds to labor time.
• Durability: Crafted from heavier gauge steel, these panels are made to order, ensuring a precise fit.

Steel Shingles

Steel shingles offer the durability of steel with the appearance of shake or slate. While less common due to higher costs, they are an excellent choice for homeowners seeking a unique and durable solution.

Advantages of Steel Roofing

1. Longevity: Hidden fastener standing seam roofs can last a lifetime, making them a one-time investment.
2. Aesthetic Appeal: Clean lines and solid colors complement a wide range of architectural styles.
3. Eco-Friendly: Steel roofing is recyclable, reducing environmental impact compared to asphalt shingles that often end up in landfills.
4. Low Maintenance: With minimal upkeep, steel roofing retains its durability and functionality for decades.
5. Weather Resistance: Steel roofs are excellent at withstanding extreme weather, from heavy snow to high winds.

Disadvantages of Steel Roofing

1. Complex Installation: Complicated roof designs with many ridges and valleys require meticulous layout and precise cutting, increasing labor costs.
2. Snow and Ice: Snow can slide off a steel roof, posing risks to people and property. Proper snow guard placement is essential during installation.
3. Noise: Rain and hail are louder on steel roofs, which can be a drawback for some. However, others, like myself, enjoy the sound as a nostalgic feature.
4. Upfront Cost: Steel roofing generally has a higher initial cost compared to shingles, though this gap has narrowed post-pandemic due to rising shingle prices.

Comparing Steel vs. Shingles

Cost: While shingles have traditionally been more affordable, the price difference has decreased significantly. The longevity of steel roofs often justifies the higher upfront investment.

Aesthetic Versatility: Shingles provide a softer, dimensional look that many homeowners prefer for residential properties. Steel, on the other hand, offers a modern or heritage aesthetic that appeals to those seeking bold, clean lines.

Durability: Steel roofs outlast shingles by decades. Exposed fastener panels may need occasional maintenance, but hidden fastener systems can truly last a lifetime.

When to Replace Your Roof

Knowing when to replace your roof is crucial to avoiding costly water damage.

Shingles:

• Granules: Excess granules in gutters or on the ground after rain indicate aging.
• Curling: Curling shingles expose underlayment, increasing the risk of leaks.
• Leaks or Stains: Water damage inside the home is a clear sign that a replacement is overdue.

Steel Roofing:

• Loose Screws: Inspect exposed fastener roofs for screws that have loosened or washers that have hardened.
• Rust or Damage: Steel roofing generally resists rust, but any visible damage should be addressed immediately.

At Quality Homes & Renovations, we’re here to help you choose the right roofing option for your project. Whether you prioritize aesthetics, durability, or cost, we ensure your roof meets your needs and withstands the test of time.