Cedar Shake Roof Installation

Cedar shake roofing has gotten complicated with all the grade options, installation techniques, and ventilation requirements flying around. As someone who has installed cedar on everything from mountain cabins to coastal homes, I learned everything there is to know about getting this natural roofing right. Today, I will share it all with you.

Types of Cedar Shakes

Probably should have led with this section, honestly—knowing your options matters:

• Hand-Split Shakes: Rough, rustic look from hand-split surface
• Taper-Sawn Shakes: Smoother appearance, sawn on both sides
• Tapershingle: Thinner profile, sawn on both sides

Grade Options

• Premium Grade: Clear vertical grain, free from defects
• Number 1 Grade: Contains some sapwood, similar durability
• Number 2 Grade: More sapwood and some defects

Preparation

That’s what makes proper prep endearing to us roofing professionals—it prevents problems later:

1. Examine existing roof and make necessary repairs
2. Ensure roof deck is clean, dry, and debris-free
3. Install high-quality roofing felt or synthetic underlayment

Tools and Materials

• Cedar shakes
• Stainless steel or hot-dipped galvanized nails
• Hammer or nail gun
• Roofing felt or synthetic underlayment
• Chalk line, saw, measuring tape
• Safety gear (gloves, goggles, harness)

Installation Process

1. Mark horizontal chalk line along roof’s edge for straight first row
2. Install starter course with bottom edge aligned to chalk line, 1.5-inch overhang
3. Secure each shake with two nails, one inch from edges and 1.5 inches from top
4. Continue with first full course overlapping starter by about 10 inches
5. Stagger joints between shakes by at least 1.5 inches
6. Maintain consistent overlap pattern throughout
7. Install ridge shakes at the top, overlapping top course

Ventilation and Flashing

Proper ventilation prevents moisture buildup and rot. Ensure ridge and soffit vents function correctly. Regularly inspect flashing around chimneys and vents to prevent leaks.

Finishing Touches

• Inspect for loose or improperly installed shakes
• Treat with wood preservative for UV and moisture protection
• Clean periodically to remove debris and moss
• Inspect annually for damage or wear