Tools and Materials
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- Prepare the wall surface and repair any damage before installing wood siding.
- Install a weather-resistant barrier and flashing before siding to help protect against moisture intrusion.
- Measure carefully and cut siding accurately to ensure a professional-looking installation.
- Keep the first course level and follow manufacturer guidelines for overlap, spacing and fastening.
- Seal gaps around windows, doors and other penetrations to help prevent water infiltration.
- Finish the siding with paint or stain and perform regular maintenance to protect the wood and extend its lifespan.
Which Type of Siding is Right for You?
Use the chart below to weigh the benefits and considerations of various siding types, including vinyl, fiber cement, composite, engineered and traditional wood siding.
Wood Siding Installation Instructions
The following is an overview of a typical wood siding installation project. Keep in mind that your steps may vary greatly depending on the materials you use. Always check local building codes and see if you need a permit before beginning any major home upgrade.
Maintain the clearances specified by the siding manufacturer between the siding and the surface underneath. These clearances help reduce moisture exposure and can improve the long-term performance of the siding.
Step 1: Prepare the Surface
- Before installation, store siding flat, protect it from moisture and allow it to acclimate to the outdoor temperature according to the manufacturer's recommendations.
- Wear protective gloves and safety goggles and use a sturdy ladder or scaffolding placed on level ground.
- Inspect the wall for damage and make any necessary repairs.
- Remove loose materials and ensure the wall surface is clean, dry and structurally sound.
Step 2: Install a Weather-Resistant Barrier
- Install a weather-resistant barrier (WRB), such as house wrap, over the wall sheathing before installing flashing or siding.
- Overlap seams according to the manufacturer's instructions.
Step 3: Measure and Cut the Siding
- Measure the height and width of the wall area where the siding will be installed.
- Mark cut lines with a chalk line and cut siding to length using a circular saw or miter saw.
Step 4: Install Flashing
- Install flashing around windows, doors and other openings in a shingle-fashion sequence to help direct water away from the wall assembly.
- Install bottom flashing first, followed by side flashing and then top flashing.
- Integrate flashing with the weather-resistant barrier and seal joints where recommended.
Step 5: Install the First Course
- For horizontal wood siding, begin at the bottom of the wall and work upward.
- Ensure the first board is level before fastening it.
- For vertical wood siding, start at a corner or designated starting point and work across the wall while keeping boards plumb and properly aligned.
Step 6: Continue Installing the Siding
- Install siding according to the manufacturer's instructions.
- Horizontal siding typically overlaps to help shed water and protect the wall assembly.
- Fasten siding to wall framing using corrosion-resistant fasteners.
- Fastener spacing should follow the siding manufacturer's requirements and local building codes.
Step 7: Seal Gaps and Penetrations
- Apply exterior-grade sealant around windows, doors and other penetration areas according to the manufacturer’s instructions.
- Tool the sealant for a neat finish.
Step 8: Finish the Siding
- Apply paint or stain as needed to protect the wood and maintain its appearance.
- Prime or seal exposed cut ends if recommended by the manufacturer.
- Allow coatings to dry and cure according to the manufacturer's instructions, as drying times vary by product and weather conditions.
Choosing Nails for Wood Siding
Always refer to the siding manufacturer's installation instructions for specific fastener size, type and spacing requirements. But here’s some general guidance for planning purposes.
- To choose the right nails for a wood siding project, consider the siding type, thickness and local climate conditions. Most wood siding installations require corrosion-resistant fasteners, such as galvanized or stainless-steel nails, to help prevent rust and staining.
- Select a nail length that allows the fastener to penetrate the wall framing according to the siding manufacturer's recommendations and local building codes.
Compatibility With Trim and J-Channel
Wood siding can be installed alongside a variety of trim products, including wood, engineered wood, composite and PVC trim. When planning your project, make sure the siding thickness is compatible with the selected trim profile so transitions around windows, doors and corners are clean and visually consistent. Properly installed trim also helps cover expansion gaps, protect exposed edges and improve the overall finished appearance of the exterior.
J-channel is commonly associated with vinyl siding installations but may also be used in certain applications where siding terminates around windows, doors or other openings. If using J-channel with wood siding, verify compatibility with both the siding and trim manufacturer's recommendations. In many wood siding installations, traditional trim boards and properly integrated flashing are preferred over J-channel to provide a more finished appearance and effective moisture management. Always follow the manufacturer's installation instructions and local building code requirements when selecting trim and accessory components.
Tips for Installing New Siding Over Existing Siding
- Inspect the existing siding for damage and make necessary repairs.
- Ensure the existing siding is clean and dry before installation.
- Verify that installing over existing siding complies with manufacturer instructions and local building codes.
- Use appropriately sized fasteners capable of penetrating the framing as required.
- Consider installing furring strips to create a drainage and ventilation space and provide a flatter installation surface.
Ready to Start Your Siding DIY?
Ready to upgrade your home's exterior with wood or another variety of siding? Lowe’s has the materials, tools and accessories you need to tackle your DIY project with confidence. Shop online for a wide selection of siding options or visit your local Lowe’s and speak with a Red Vest associate for expert advice on choosing the right siding products for your home.
