Installing solar panels on a wood shake roof requires more planning than a typical rooftop solar project. Wood shakes can be fragile, combustible, and difficult to flash around mounting hardware. The roof’s age, condition, fire classification, local building rules, and insurance requirements all affect whether an installation is practical. In many cases, replacing the shakes before adding solar is the most durable option; in others, a qualified installer may be able to use specialized mounts. Understanding the trade-offs helps homeowners compare bids and avoid roof damage or costly rework.
Replace the shakes before installing solar
Removing the wood shakes and installing a suitable replacement roof before solar is often the most straightforward long-term approach. Depending on local code, the home’s design, and insurer requirements, replacement materials might include a fire-rated composition roof, metal roofing, tile, or another approved product. The best choice depends on structural capacity, climate, appearance, and budget.
Roof replacement lets the roofing contractor inspect the deck, repair damaged areas, and install a consistent roof surface. The solar contractor can then design mounts and flashings for the new material. Coordinating roof and solar work can reduce the likelihood of having to remove panels for roof replacement later.
Replacing a roof solely for solar can raise upfront costs, so homeowners should compare the total project cost with the expected energy savings and the cost of keeping the existing roof. A separate roof estimate makes the comparison clearer. The solar proposal should state whether roof work is included or excluded.
Use a specialized shake-roof mounting system
Some installers may offer mounting equipment or installation details designed for wood shakes. These systems may use a standoff or other engineered arrangement to transfer loads to the roof structure while accommodating the shake thickness. The precise design varies, and no single method is suitable for every roof.
Ask the installer for the manufacturer’s installation instructions, details of the flashing and waterproofing, and confirmation that the system is approved for the roof type. The mount must be attached to structural framing or another engineered support—not simply to the shakes. The contractor should explain how rafters will be located and how damaged roofing will be replaced.
Specialized hardware does not eliminate the risks of brittle shakes, fire restrictions, or a roof near the end of its service life. It is important to confirm in writing that the installer accepts responsibility for its roof work and to understand the limits of any workmanship and leak warranties.
Consider ground-mounted solar
If roof installation is impractical, ground-mounted solar may be an alternative when the property has suitable land, solar access, and room for the equipment. A ground-mounted system avoids roof penetrations and makes future roof work irrelevant to the array. It may, however, require trenching, additional permitting, structural foundations, and more space.
Shading, setbacks, drainage, utility interconnection rules, and local zoning can affect feasibility. A site assessment can compare a ground-mounted system with roof replacement and rooftop solar.
How to Evaluate a Solar Proposal
A homeowner should not rely on a salesperson’s verbal assurance that a shake roof is “no problem.” A strong proposal describes the roof-specific design, permits, installation responsibilities, and what happens if shakes break or a leak occurs.
- Roof inspection: Request a written assessment of roof condition, estimated remaining service life, and any recommended repairs.
- Mounting details: Ask for the mounting product, attachment points, flashing method, and confirmation that the installation instructions cover the roof type.
- Structural review: Confirm that the roof framing and deck can support the system’s dead load and design wind and snow loads. A qualified professional should evaluate unusual or uncertain conditions.
- Fire and code review: Ask who will verify local fire, electrical, structural, and roofing requirements and obtain the required permits and inspections.
- Roof-damage plan: Get written terms for replacing broken shakes, matching materials, and repairing damage discovered during installation.
- Warranty terms: Check the solar workmanship warranty, roof-penetration coverage, product warranties, and any exclusions affecting existing roofing.
- Removal and reinstallation: Ask what it would cost to remove and reinstall the array if the roof needs work later.
Homeowners can compare the installer’s proposal with the equipment manufacturer’s instructions and the local permit requirements. The U.S. Department of Energy’s Homeowner’s Guide to Going Solar explains key steps in evaluating rooftop solar, including roof suitability, contractor selection, and permitting.
Permits, Inspections, and Professional Roles
Solar work commonly involves building and electrical permits, with requirements set by state and local jurisdictions. A project may also require structural review or fire-department input. The AHJ determines which codes and amendments apply, so requirements in one city or county may differ from those in another.
Typically, the solar contractor prepares the system design and permit application, while licensed roofing or construction professionals handle roof replacement or specialized roof repairs. Depending on local rules, a structural engineer may need to evaluate the roof. The homeowner should confirm who is responsible for each part of the project instead of assuming that one company’s proposal covers everything.
Permits and inspections help verify that installed work meets applicable requirements, but they do not guarantee that a roof is in good condition or that an insurer will accept the system. Keep copies of approved plans, inspection records, equipment specifications, and warranty documents with the home’s maintenance records.
Costs and Financial Trade-Offs
The cost of solar on a wood shake roof varies with system size, roof access, the condition and pitch of the roof, equipment, electrical upgrades, and local labor rates. Replacing the roof adds a potentially substantial expense. A specialized shake-roof installation may avoid full replacement, but it can involve higher labor costs and greater uncertainty about breakage, repairs, and long-term maintenance.
Comparisons should use the total project cost rather than the solar equipment price alone. Request separate estimates for solar, roof work, and any electrical or structural upgrades. If a future roof replacement is likely, include the anticipated cost of taking the panels down and reinstalling them. This makes it easier to compare immediate roof replacement with a possible later removal-and-reinstallation expense.
Energy savings depend on electricity rates, system output, shading, utility compensation rules, and the household’s energy use. A contractor’s production estimate is a forecast, not a guarantee. Homeowners should review its assumptions and check current utility and incentive rules directly, since programs and tax provisions can change.
Questions to Ask Before Signing
- Has the roof been inspected by someone experienced with wood shakes?
- Does the installer have documented experience with this exact roof type and mounting system?
- Will the project require replacing shakes, repairing decking, or replacing the roof?
- How will mounts attach to the structure, and how will each penetration be flashed?
- Which permits and inspections are required, and who will obtain them?
- Has the local building department or fire authority confirmed applicable roof and solar requirements?
- Does the homeowner’s insurance company accept the existing roof and proposed solar installation?
- What warranties cover roof leaks, installation workmanship, and damage to existing shakes?
- What is the estimated cost to remove and reinstall the array for future roof work?
Making the Decision
Solar panels on a wood shake roof may be feasible, but the roof’s condition and local safety requirements can make the project more complicated than a standard rooftop installation. A roof inspection, clear mounting and flashing details, code review, and insurer confirmation should come before a contract. When the shakes are old, fragile, or difficult to insure, replacing the roof first—or evaluating ground-mounted solar—may offer a more dependable path.
The most useful comparison is not simply “solar now” versus “no solar.” It is the full cost and risk of installing on the existing roof versus coordinating roof replacement and solar, including future maintenance. A proposal that addresses the roof in detail gives homeowners a stronger basis for deciding.