Selecting the right plywood for your shed roof is essential for weather protection and structural integrity. Here’s our guide to choosing the best plywood for shed roof sheathing.
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Best Plywood Options for Shed Roofs
CDX Plywood
- Industry standard for roof sheathing
- 1/2″ (12mm) or 5/8″ (16mm) thickness
- Exposure 1 rated
- Good moisture resistance
- Most economical choice
- Most commonly used option
Check out our CDX Plywood
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Exterior Grade Plywood
- Premium choice for longer lifespan
- 1/2″ (12mm) or 5/8″ (16mm) thickness
- Superior water resistance
- Enhanced durability
- Better face quality
- Ideal for exposed applications
Check out our Exterior Plywood
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OSB (Oriented Strand Board)
- Cost-effective alternative
- 7/16″ (11mm) or 1/2″ (12mm) thickness
- Good structural strength
- Meets code requirements
- Budget-friendly option
- Widely accepted for roofing
Thickness Requirements
By Rafter Spacing:
- 16″ on center: 1/2″ (12mm) minimum
- 24″ on center: 5/8″ (16mm) minimum
- High snow areas: 5/8″ (16mm) recommended
Climate Considerations:
- Standard regions: 1/2″ (12mm)
- Heavy snow regions: 5/8″ (16mm)
- High wind areas: 5/8″ (16mm)
Installation Guidelines
- Preparation
- Verify rafter spacing
- Check for straight rafters
- Ensure proper ventilation
- Plan panel layout
- Installation Steps
- Start at bottom edge
- Stagger end joints
- Leave 1/8″ gap between sheets
- Use H-clips between rafters
- Install with long dimension perpendicular to rafters
- Fastening Requirements
- 8d common nails or
- 2-3/8″ roof nails
- 6″ spacing on edges
- 12″ spacing in field
- Nail 3/8″ from panel edges
Weather Protection
Required Materials:
- Roofing felt (15# or 30#)
- Drip edge
- Valley flashing
- Proper roof covering
- Ridge vent system
Installation Order:
- Plywood sheathing
- Drip edge (bottom)
- Roofing felt
- Drip edge (sides)
- Roofing material
Our Recommendations
Economy Package:
- CDX Plywood 1/2″ (12mm)
- 15# roofing felt
- Standard fastening schedule
- Basic ventilation
Standard Package:
- Exterior Grade 1/2″ (12mm)
- 30# roofing felt
- Enhanced fastening schedule
- Improved ventilation system
Premium Package:
- Exterior Grade 5/8″ (16mm)
- Synthetic underlayment
- Maximum fastener schedule
- Premium ventilation system
Additional Considerations
- Ventilation Requirements:
- Ridge vent
- Soffit vents
- Proper air flow
- Moisture control
- Regional Factors:
- Snow loads
- Wind exposure
- Rainfall intensity
- Local building codes
- Maintenance Tips:
- Annual inspection
- Check for leaks
- Monitor ventilation
- Clear debris regularly
Installation Supplies Needed
Fasteners:
- 8d galvanized nails
- Quantity: 1 lb per 100 sq ft
- Ring-shank preferred
- Proper length for thickness
Additional Materials:
- H-clips (for 24″ spans)
- Roofing felt
- Metal drip edge
- Construction adhesive (optional)
Tips for Success
- Storage:
- Keep materials dry
- Store flat
- Cover until needed
- Allow air circulation
- Installation:
- Work in dry weather
- Cover same day
- Check forecast
- Have tarps ready
What Plywood to Use for Shed Floor?
What Plywood to Use for Shed Walls?
Visit our store to view our selection of roof-grade plywood and contact us to discuss your specific project requirements with our experienced staff.
