Metal Roofing Used As Siding – Transform Your Home’S Exterior
Yes, you can absolutely use metal roofing panels as a durable and stylish exterior siding solution for your home or workshop. This approach offers excellent longevity, low maintenance, and a distinct aesthetic appeal.
When considering metal roofing as siding, focus on proper panel selection, robust furring strip installation, and meticulous flashing to ensure weather-tightness and a professional finish.
Are you looking for an exterior finish that breaks away from the ordinary, offering both exceptional durability and a distinctive aesthetic? Traditional siding options often come with compromises—be it the upkeep of wood, the potential for damage with vinyl, or the cost of masonry. Many DIY homeowners and garage tinkerers are now discovering the immense potential of using metal roofing as siding to create a striking, long-lasting facade for their homes, workshops, or outbuildings.
I agree, the idea of adapting a material primarily designed for roofs to vertical walls might seem unconventional at first. But trust me, as someone who’s tackled countless home improvement projects, this isn’t just a trend; it’s a smart, practical solution. The same qualities that make metal a superior roofing material—its resilience, weather resistance, and longevity—also make it an outstanding choice for siding.
This comprehensive guide promises to demystify the process of installing metal roofing as siding. We’ll dive deep into everything you need to know, from selecting the right panels and preparing your walls to the step-by-step installation and crucial maintenance tips. By the end, you’ll have the confidence and knowledge to tackle this rewarding project, elevating your home’s curb appeal and protection.
Why Choose Metal Roofing Panels for Your Siding?
Opting for metal panels for your home’s exterior goes beyond just aesthetics. There are numerous practical benefits that make this a compelling choice for any DIYer. Let’s explore why this material is gaining so much traction.
Exceptional Durability and Longevity
One of the primary reasons to consider metal panels is their incredible lifespan. Unlike traditional siding materials that might need replacement every 15-20 years, a properly installed metal siding system can easily last 40-70 years or even longer.
Most metal panels are made from steel coated with zinc (galvanized) or a zinc-aluminum alloy (galvalume), providing superior rust resistance. Higher-end options like aluminum, copper, or zinc offer even greater longevity and unique patinas.
Low Maintenance Requirements
Imagine spending less time painting, repairing, or cleaning your home’s exterior. That’s the reality with metal siding. It doesn’t rot, warp, crack, or peel like wood. It’s also impervious to pests like termites and carpenter ants.
A simple hose-down once a year is often all that’s needed to keep it looking fresh. This frees up your weekends for more enjoyable projects in the workshop!
Superior Weather Resistance
Metal panels are designed to withstand the harshest elements. They’re highly resistant to high winds, heavy rain, snow, and hail. The interlocking or overlapping design of many panels creates a robust, weather-tight barrier against moisture intrusion.
This makes them an excellent choice for homes in areas prone to severe weather.
Fire Resistance
Unlike wood or vinyl, metal siding is non-combustible. This can provide an added layer of safety for your home and may even lead to discounts on homeowner’s insurance in some areas. It’s a significant advantage, especially for those living in wildfire-prone regions.
Energy Efficiency Potential
Metal siding, particularly those with lighter colors or specialized coatings, can reflect solar radiant heat away from your home. This can reduce cooling costs in warmer climates.
When combined with proper insulation and a rainscreen system (which we’ll discuss later), it significantly contributes to your home’s thermal performance.
Modern and Versatile Aesthetics
The look of metal siding can range from sleek and modern to rustic and industrial, depending on the panel profile and color you choose. Corrugated panels evoke a classic barn aesthetic, while standing seam offers clean, contemporary lines.
With a vast array of colors and finishes, you can achieve almost any design vision. This versatility is a huge draw for those looking for a unique curb appeal.
metal roofing used as siding: Types, Panels, and Profiles
When you decide to use metal roofing as siding, understanding the different types of panels and profiles is crucial. Each has its own aesthetic, installation method, and cost implications. Let’s break down the most common options.
Common Metal Materials for Siding
The type of metal dictates much about the panel’s performance and appearance.
- Steel: This is the most common and cost-effective option. It’s typically galvanized (zinc-coated) or galvalume (zinc-aluminum alloy coated) for corrosion resistance. Steel is strong but heavier than aluminum.
- Aluminum: Lighter and naturally rust-resistant, aluminum is a great choice, especially in coastal areas. It’s generally more expensive than steel and can dent more easily.
- Copper and Zinc: These are premium options known for their extremely long lifespan and beautiful natural patinas that develop over time. They are significantly more expensive and often used for architectural accents.
Panel Profiles and Their Aesthetics
The profile refers to the shape of the panel, which defines its look and how it’s installed.
- Corrugated Panels: These are the classic wavy panels, often seen on barns and industrial buildings. They offer a strong industrial or rustic look. Installation is typically with exposed fasteners.
- R-Panel/PBR-Panel: These are robust, ribbed panels with a trapezoidal profile. R-panels have a 1-1/4″ high rib, while PBR-panels (Purlin Bearing Rib) have an extra leg that creates a wider fastening surface, making them stronger and more weather-tight. They also use exposed fasteners.
- Standing Seam Panels: These panels feature vertical ribs that stand above the flat part of the panel, creating clean, modern lines. They are typically installed with hidden fasteners, giving a very sleek look. This is often a more premium option.
- Exposed Fastener vs. Hidden Fastener:
- Exposed Fastener Panels: Screws are driven through the face of the panel and into the substrate. This is generally more economical and easier for DIYers. The screws often have rubber washers to seal the holes.
- Hidden Fastener Panels: Panels interlock or clip onto a substrate, concealing the fasteners. This creates a very clean, smooth appearance and often offers superior weather protection. Installation is more complex and typically requires specialized tools.
Consider the aesthetic you’re aiming for. Corrugated or R-panel for a utilitarian or rustic look, standing seam for modern elegance.
Planning Your Metal Siding Project
Proper planning is the cornerstone of any successful DIY project, and using metal roofing as siding is no exception. Taking the time upfront will save you headaches and costly mistakes down the line.
Design Considerations and Aesthetics
Before ordering, visualize the final look. Do you want horizontal or vertical panels? Vertical lines can make a building appear taller, while horizontal lines can make it seem wider.
Consider the color and finish. Darker colors absorb more heat, lighter colors reflect it. Matte finishes reduce glare, while glossy finishes can be more vibrant. Get samples if possible!
Measuring and Material Calculation
Accurate measurements are critical. Measure the height and width of each wall section you plan to cover. Account for windows, doors, and other openings.
When calculating panel quantities, remember to factor in overlap for corrugated or R-panels, and any waste from cuts. It’s always wise to order about 10-15% extra material to account for miscuts, damage, or future repairs. Don’t forget trim pieces like J-channel, corner trim, and soffit/fascia if needed.
Local Building Codes and Permits
Always check with your local building department before starting. Code requirements can vary significantly by location. You might need a permit, and there might be specific regulations regarding material fire ratings, wind resistance, or even aesthetic guidelines for certain neighborhoods.
Skipping this step can lead to fines or the costly removal of your new siding.
Insulation and House Wrap
Before installing metal panels, ensure your walls are properly insulated and wrapped. A high-quality house wrap (like Tyvek or similar) acts as a secondary moisture barrier and air barrier, protecting your sheathing from water intrusion.
Consider adding rigid foam insulation panels over your sheathing before the furring strips. This creates a continuous insulation layer, reducing thermal bridging and improving energy efficiency.
Furring Strips: Creating the Rainscreen Gap
This is a crucial step for metal siding. Furring strips (typically 1×3 or 1×4 pressure-treated lumber) are installed vertically or horizontally over the house wrap.
- Vertical Panels: Install horizontal furring strips every 16-24 inches on center.
- Horizontal Panels: Install vertical furring strips every 16-24 inches on center.
These strips create a crucial air gap between the metal panels and your house wrap. This “rainscreen” gap allows any moisture that gets behind the metal to drain down and away, and it promotes airflow, preventing moisture buildup and rot. It also provides a solid substrate for fastening your metal panels.
Essential Tools and Materials You’ll Need
Having the right tools makes all the difference for a smooth and safe installation. Here’s a list of what you’ll likely need.
Tools for the Job
- Impact Driver or Drill: For driving screws. A powerful cordless model is invaluable.
- Metal Snips: Straight, left, and right cut snips for intricate cuts and trimming.
- Electric Shears or Nibbler: For faster, cleaner, long straight cuts on panels. A circular saw with a fine-tooth metal-cutting blade can also work, but generate a lot of sparks.
- Tape Measure and Chalk Line: For accurate layout and marking.
- Level (4-foot and Torpedo): Essential for ensuring straight furring strips and panel alignment.
- Tin Snips: For smaller cuts and flashing.
- Caulking Gun: For applying sealant around penetrations.
- Utility Knife: For cutting house wrap.
- Safety Gear: Always wear safety glasses, heavy-duty gloves, and hearing protection. Metal edges are sharp, and cutting metal is loud.
Materials Checklist
- Metal Siding Panels: Your chosen profile, color, and material.
- Furring Strips: Pressure-treated 1×3 or 1×4 lumber.
- House Wrap: High-quality, breathable moisture barrier.
- Fasteners:
- Screws for furring strips (long enough to penetrate sheathing and studs).
- Self-tapping, washer-head screws (color-matched) for exposed fastener panels.
- Clips and screws for hidden fastener standing seam panels.
- Trim Pieces: J-channel, corner trim (inside/outside), rake trim, gable trim.
- Sealant/Caulk: Exterior-grade, UV-resistant sealant.
- Flashing: Coil stock or pre-bent flashing for windows, doors, and other penetrations.
Step-by-Step Installation Guide for Metal Siding
With your planning complete and tools ready, it’s time to get hands-on. This guide focuses on a typical exposed fastener installation, which is often more DIY-friendly.
Step 1: Prepare the Wall
First, remove any existing siding. Repair any damaged sheathing or framing.
Next, apply your house wrap according to the manufacturer’s instructions, overlapping seams and taping them properly. Start at the bottom and work your way up, shingling the layers so water sheds down.
Step 2: Install Furring Strips
This is a critical step for creating your rainscreen.
- For vertical panels, install horizontal furring strips. Start at the bottom, ensuring the first strip is perfectly level. Use a chalk line to mark subsequent lines every 16-24 inches on center.
- For horizontal panels, install vertical furring strips. Mark stud locations and fasten strips directly into the studs.
- Use long screws that penetrate the sheathing and securely anchor into wall studs. Ensure your furring strips are straight and plumb/level.
Step 3: Install Trim and Flashing
Before installing the main panels, put in all necessary trim pieces.
- Install J-channel around windows and doors to receive the panel edges.
- Install inside and outside corner trim pieces.
- Ensure all trim is plumb, level, and securely fastened to the furring strips.
- Install appropriate flashing above windows, doors, and any other penetrations to direct water away. Use a good quality sealant where needed, but avoid trapping water.
Step 4: Start Panel Installation
The starting point is crucial for a straight installation.
- Vertical Panels: Begin at one corner (usually the least visible) or a doorway. Ensure your first panel is perfectly plumb using a level. Fasten it securely to the furring strips using your color-matched self-tapping screws.
- Horizontal Panels: Start at the bottom of the wall, ensuring your first panel is perfectly level. Work your way up the wall, overlapping each subsequent panel over the one below it.
Step 5: Overlap and Fasten Panels
For exposed fastener panels, you’ll overlap the ribs of each subsequent panel over the previous one.
- Drive screws through the overlap, ensuring they go into the furring strips. Follow the manufacturer’s recommendations for screw spacing, typically every 12-18 inches along the ribs.
- Don’t over-tighten screws; this can deform the metal and compromise the washer seal. Tighten until the washer compresses slightly.
- Periodically check for plumb or level as you go. Small errors can compound quickly.
Step 6: Cutting Panels Around Obstructions
You’ll need to cut panels to fit around windows, doors, and other features.
- Measure carefully, marking your cut lines clearly.
- Use metal snips for smaller, intricate cuts. For longer, straighter cuts, an electric shear or nibbler is ideal.
- Always cut from the backside of painted panels to minimize scratching the finish.
- After cutting, use J-channel or other trim to create a neat edge around openings.
Step 7: Finishing Touches
Once all panels are installed, check all fasteners. Apply exterior-grade sealant around any remaining exposed edges, penetrations, or trim pieces to ensure a weather-tight seal.
Clean up any metal shavings immediately, as they can rust and stain the new siding. A leaf blower works well for this.
Maintenance and Care for Metal Siding
While metal siding is low maintenance, a little care goes a long way in ensuring its longevity and appearance.
Regular Cleaning
Generally, a good rinse with a garden hose once a year is sufficient to remove dirt, dust, and pollen. For tougher grime, use a soft brush and a mild detergent solution (like dish soap) mixed with water.
Avoid abrasive cleaners or stiff brushes that could scratch the finish. Always rinse thoroughly afterward.
Inspecting for Damage
Periodically inspect your siding for any signs of damage. Look for:
- Loose or missing fasteners: Re-tighten or replace as needed.
- Dents or scratches: Minor scratches can sometimes be touched up with color-matched paint from the manufacturer. Larger dents may require panel replacement.
- Compromised sealant: Reapply sealant around windows, doors, and trim if it appears cracked or worn.
Addressing Rust (If It Occurs)
High-quality metal panels are designed to resist rust. However, if surface rust appears (often due to metal shavings from cutting not being cleaned up, or a deep scratch), address it promptly.
Clean the affected area, sand lightly to remove rust, prime with a rust-inhibiting primer, and then touch up with color-matched paint.
Common Challenges and Troubleshooting
Even experienced DIYers encounter hurdles. Here’s how to anticipate and overcome some common issues when working with metal roofing used as siding.
Thermal Expansion and Contraction
Metal expands and contracts significantly with temperature changes. This is why it’s crucial not to over-tighten screws, especially on exposed fastener panels. Allow a little room for movement.
For standing seam, hidden fastener systems are designed to accommodate this movement through clips. If panels are too tightly constrained, they can buckle or warp.
Noise Issues
Some people worry about noise from rain or hail on metal siding. The rainscreen gap created by furring strips, combined with proper wall insulation, significantly dampens sound.
For added soundproofing, consider additional insulation behind the panels.
Cutting Challenges
Cutting metal can be tricky. Using the right tools (electric shears or nibbler) will give cleaner cuts and less burring. Always wear appropriate PPE.
If using a circular saw, use a metal-cutting blade and be prepared for sparks. Clean up metal filings immediately to prevent rust stains on your new siding.
Ensuring Water-Tightness
This is paramount. Meticulous installation of house wrap, flashing, and trim is key. Pay extra attention around windows, doors, and any penetrations.
Use high-quality exterior sealant where necessary, but remember that the rainscreen gap is your primary defense against moisture.
Frequently Asked Questions About Metal Roofing as Siding
Here are answers to some common questions DIYers have about using metal panels for their home’s exterior.
Is metal roofing more expensive than traditional siding options?
The initial cost can be comparable to or slightly higher than mid-range vinyl or fiber cement siding, especially for standing seam or premium metal types. However, its exceptional longevity and minimal maintenance often make it a more cost-effective choice over the lifespan of your home.
Can I install metal siding myself, or do I need a professional?
Many DIYers with good carpentry skills and attention to detail can install exposed fastener metal siding. It requires precise measuring, careful cutting, and ensuring everything is plumb and level. Hidden fastener systems, like standing seam, are generally more complex and might be better suited for experienced professionals or a very ambitious DIYer.
What about lightning strikes with metal siding?
Metal siding does not increase the risk of a lightning strike. In fact, if your home is struck, a properly grounded metal exterior can help dissipate the electrical charge more safely into the ground, potentially reducing damage compared to other materials.
Does metal siding get hotter than other siding materials?
While metal can absorb heat, lighter-colored metal siding with reflective coatings can actually reflect more solar radiation than darker traditional sidings. The rainscreen gap created by furring strips also allows for airflow, preventing heat from transferring directly into the wall cavity. Proper insulation behind the siding is still key for overall energy efficiency.
Will metal siding rust or fade over time?
High-quality galvanized or galvalume steel panels, especially those with Kynar 500 or SMP paint systems, are highly resistant to rust, fading, and chalking. Most manufacturers offer extensive warranties on their finishes. Aluminum, copper, and zinc naturally resist rust and develop attractive patinas instead of fading.
Conclusion: Embrace the Strength and Style of Metal Siding
Venturing into a project like using metal roofing as siding might seem daunting, but with careful planning, the right tools, and a methodical approach, it’s a completely achievable and incredibly rewarding endeavor for any dedicated DIYer. You’re not just installing a new exterior; you’re investing in decades of durability, minimal maintenance, and a distinct aesthetic that will set your home apart.
Remember, safety always comes first. Wear your protective gear, take your time with measurements and cuts, and don’t hesitate to double-check your work. The satisfaction of standing back and admiring your handiwork, knowing you’ve created a resilient and beautiful facade, is immense. So, grab your tools, embrace the challenge, and give your home the tough, stylish upgrade it deserves. Stay safe and keep building!
