Quick Answer
Standard metal siding (ribbed or corrugated panels) is used on 90% of pole barns due to durability, cost, and ease of installation. Board and batten offers a traditional aesthetic, while vertical plywood with metal wainscot creates a modern hybrid look. Consider fire rating, maintenance, and climate when selecting siding for your pole barn.
Popular Pole Barn Siding Options
1. Ribbed Metal Siding (Most Common)
Exposed-fastener panels with raised ribs, typically matching the roofing profile.
Characteristics:
- 36-inch wide coverage
- 29-26 gauge steel
- Color-matched screws with neoprene washers
- $2-3 per sq ft for materials
- 40+ year lifespan
Advantages:
- Durable and weather-resistant
- Fire-resistant (Class A rating available)
- Low maintenance
- Fast installation
- Wide color selection
Disadvantages:
- Denting from impact (hail, equipment)
- Industrial aesthetic (not for everyone)
- Noise during rain (indoors)
Best For: Agricultural buildings, workshops, garages, storage buildings
2. Corrugated Metal Siding
Traditional wavy profile, offering a more rustic agricultural appearance.
Characteristics:
- 24-26 inch wide coverage
- Distinctive wave pattern
- Slightly less expensive than ribbed panels
Best For: Agricultural buildings, farm structures, rustic aesthetic projects
3. Board and Batten
Traditional vertical wood siding with narrow boards covering the gaps between wider boards.
Characteristics:
- Typically 1x10 boards with 1x3 battens
- Can use pine, cedar, or painted plywood
- $4-6 per sq ft for materials
- Requires painting/staining every 5-7 years
Advantages:
- Traditional aesthetic
- Can be painted any color
- Easy repair (individual boards)
- Renewable material
Disadvantages:
- Higher maintenance than metal
- Fire risk (Class C rating unless treated)
- Shorter lifespan (20-30 years with maintenance)
- Higher material cost
Best For: Barndominiums, residential pole buildings, projects in historic districts
4. T1-11 Plywood Siding
Grooved plywood paneling with a rustic plywood appearance.
Characteristics:
- 4x8 sheets with vertical grooves
- Requires painting or staining
- $2-3 per sq ft for materials
- Must be installed over house wrap
Advantages:
- Inexpensive
- Easy installation (sheet goods)
- Can be painted any color
- Easy to cut and modify
Disadvantages:
- Requires regular maintenance
- Vulnerable to moisture damage
- Fire rating concerns
- Limited lifespan (15-20 years)
Best For: Budget builds, temporary structures, interior partitions
5. LP SmartSide (Engineered Wood)
Engineered wood siding with zinc borate treatment for rot and insect resistance.
Characteristics:
Advantages:
- Wood appearance with modern durability
- Resistant to rot, termites, and hail
- Class A fire rating available with special installation
- Can be installed directly to studs/girts
Best For: Residential pole buildings, barndominiums, climate-controlled structures
6. Fiber Cement Siding
Cement, sand, and cellulose fiber composite siding.
Characteristics:
- Available in lap siding, panel, and shingle styles
- 30-year warranty typical
- $4-6 per sq ft for materials
- Class A fire rating
Advantages:
- Fire and pest resistant
- Durable and dimensionally stable
- Painted finish lasts 15+ years
- Available in wood-look textures
Disadvantages:
- Heavy (requires careful installation)
- Brittle (can crack if mishandled)
- Higher cost than metal
Best For: Barndominiums in wildfire areas, premium residential projects
Combination Siding Options
Metal with Wood Wainscot
Combine metal siding on upper walls with wood or engineered wood on lower 3-4 feet.
Benefits:
- Breaks up the "metal box" appearance
- Wood wainscot protects from equipment damage
- Creates architectural interest
Vertical Board with Horizontal Accents
Use vertical metal or wood siding with horizontal banding or trim.
Benefits:
- Modern farmhouse aesthetic
- Hides panel seams
- Adds visual depth
Siding Considerations by Climate
| Climate | Recommended Siding |
|---|---|
| Hot/Humid | Metal (light color) or Fiber Cement |
| Cold/Snowy | Metal (with proper insulation) or LP SmartSide |
| High Fire Risk | Metal or Fiber Cement (Class A rated) |
| Coastal/Salt Air | 26 gauge metal or Fiber Cement |
| High Wind | 26 gauge metal or Fiber Cement (properly fastened) |
Installation Considerations
Girt Spacing
Standard girt spacing is 24 inches on-center. Some materials require different spacing:
- Metal panels - 24 inches o.c.
- Plywood/T1-11 - 16 or 24 inches o.c. (check panel rating)
- Board and batten - 16-24 inches o.c. (depends on board width)
- Fiber cement - 16 inches o.c. for lap siding, 24 for panel
House Wrap Requirements
For non-metal siding:
- Required - For plywood, T1-11, LP SmartSide, fiber cement
- Optional - For metal siding (but recommended for moisture control)
- Recommended products - Tyvek, Typar, or generic house wrap
Insulation Integration
How siding integrates with insulation affects comfort:
- Metal over exposed girts - Limited insulation options, visible ribs inside
- Metal over furring strips - Allows cavity insulation but reduces interior width
- Board and batten - Can insulate between boards, battens hide insulation
- Plywood - Easy to add insulation + interior finish
Cost Comparison
| Material | Material Cost | Lifespan | Annual Cost |
|---|---|---|---|
| 29 gauge metal | $2-3/sq ft | 40 years | $0.06/sq ft/year |
| Board and batten | $4-6/sq ft | 25 years | $0.20/sq ft/year |
| T1-11 plywood | $2-3/sq ft | 20 years | $0.13/sq ft/year |
| LP SmartSide | $3-5/sq ft | 50 years | $0.09/sq ft/year |
| Fiber cement | $4-6/sq ft | 30 years | $0.17/sq ft/year |
Fire Ratings
Fire rating is critical in wildfire-prone areas:
| Siding Type | Fire Rating |
|---|---|
| Metal (corrugated/ribbed) | Class A (best) |
| Fiber cement | Class A |
| LP SmartSide | Class A with special installation |
| T1-11 plywood | Class C (poor) unless treated |
| Board and batten (wood) | Class C unless treated |
Important: Insurance rates and building codes may be affected by fire rating. Wildfire-prone areas often require Class A rated siding.
Common Mistakes
Mistake 1: Using Wrong Fasteners
Standard screws and nails corrode quickly. Use hot-dipped galvanized or stainless steel fasteners approved for exterior use.
Mistake 2: Skipping House Wrap
House wrap is cheap insurance against moisture problems. Even with metal siding, house wrap prevents condensation issues.
Mistake 3: Improper Girt Spacing
Varying girt spacing causes wavy siding and weak attachment. Mark girt locations carefully and verify spacing before installing siding.
Mistake 4: Ignoring Expansion
Metal expands and contracts with temperature. Provide expansion joints and don't fastener panels too tightly at the ends.
Mistake 5: Not Planning for Interior Finish
If you plan to finish the interior later, consider using commercial girts or adding furring strips. Exposed girts make interior finishing difficult.
Common Questions
Q: Can I mix siding types on my pole barn?
A: Yes, combining metal upper walls with wood wainscot is a popular choice. Just ensure proper flashing at the transition to prevent water intrusion.
Q: Do I need house wrap under metal siding?
A: Not required by code in most areas, but recommended. House wrap ($0.30/sq ft) prevents condensation issues and improves energy efficiency.
Q: What's the most durable siding for a pole barn?
A: Metal siding (26 gauge or heavier) offers the best combination of durability, longevity, and low maintenance. Fiber cement is also very durable but costs more.
Q: Can I install vinyl siding on a pole barn?
A: Yes, but it's not common. Vinyl siding requires continuous substrate (plywood/OSB) over girts, adding cost. Vinyl is also less durable than metal for agricultural use.
Q: How do I prevent rust on metal siding?
A: Use painted or Galvalume-coated panels (not plain galvanized). Avoid scratches during installation, and touch up any exposed metal with paint. Stainless steel fasteners prevent rust streaks.
Q: Should siding match the roof?
A: Matching roof and siding creates a cohesive look. Contrasting colors (bronze roof with white siding) creates visual interest. Either approach works—personal preference and neighborhood aesthetics should guide your choice.
Sources & References
- Metal Construction Association, "Metal Wall Systems" - metalconstruction.org
- LP Building Solutions, "SmartSide Installation Guide" - lpcorp.com
- James Hardie, "Fiber Cement Siding Installation" - jameshardie.com
- International Code Council, "2021 International Building Code"
- APA - The Engineered Wood Association, "Siding Installation" - apawood.org