How to Install Hardwood Flooring

Solid hardwood flooring adds real estate value, lasts 50-100 years, and can be refinished multiple times. It's more demanding than LVP - moisture sensitivity, specific subfloor requirements, and the need for a flooring nailer - but the result is unmatched. This guide covers solid hardwood nail-down installation over wood subfloor.

Step 1: Calculate Materials

Use the Hardwood Floor Calculator to get square footage plus waste. Add 10% waste for straight lay, 15% for diagonal. Hardwood comes in bundles - check the coverage per bundle on the label. Buy 5-10% extra beyond the waste factor for matching future repairs.

Step 2: Acclimate the Wood

Hardwood must acclimate to the installation environment - stack the bundles in the room with spacers between rows for airflow. Minimum 3 days, preferably 5-7 days. The wood moisture content should be within 2-4% of the subfloor moisture content. A moisture meter is the only reliable way to check this.

Step 3: Prepare the Subfloor

The subfloor must be 3/4 inch plywood and flat within 3/16 inch over 10 feet. Check for squeaks and secure loose boards with screws. Test moisture - subfloor moisture content should be under 12%. Lay 15-lb rosin paper over the subfloor to reduce squeaking.

Step 4: Plan the Layout

Run planks parallel to the longest wall and perpendicular to floor joists. Establish a straight starting line 1/2 inch from the starting wall using a chalk line. The first 1-2 rows are face-nailed since the flooring nailer can't reach that close to the wall.

Step 5: Install the First Rows

Face-nail the first row through the top near the wall (the baseboard will cover the nail holes). Pre-drill to prevent splitting. Apply construction adhesive in addition to nailing for the first three rows for extra stability. Begin blind-nailing through the tongue as soon as the flooring nailer can reach.

Step 6: Nail-Down Installation

Use a pneumatic flooring nailer (rent for $40-$60/day) to drive cleats through the tongue of each board at 45 degrees. Space fasteners every 6-8 inches along the board and within 2-3 inches of each end. Stagger end joints by at least 6 inches between adjacent rows.

Step 7: Cut and Fit Around Obstacles

For straight cuts, use a miter saw or circular saw with a sharp blade. For curves around pipes, use a jigsaw. Undercut door casings so the flooring slides underneath. Leave 1/2 inch expansion gap at all walls and fixed objects - hardwood moves significantly more than LVP with humidity changes.

Step 8: Face-Nail the Last Rows and Finish

The last 1-2 rows must be face-nailed again. Use a pull bar to pull the last rows tight. Fill all face-nail holes with color-matched wood filler. Install transition strips at doorways and thresholds. Install or reinstall baseboards to cover the expansion gap.

Pro Tips

• Never install hardwood in bathrooms or below grade.
• Buy a moisture meter - it's a $20-$40 tool that prevents thousands in failed flooring.
• Run a humidifier or dehumidifier to keep indoor humidity at 35-55% year-round.
• Sand and refinish is possible 4-6 times over the life of 3/4 inch solid hardwood.
• Install perpendicular to floor joists for maximum structural support.