Reclaimed wood flooring is one of the most beautiful and sustainable choices you can make for a home or commercial space. But installing it properly requires some additional steps compared to working with new lumber. Here's our comprehensive guide based on decades of combined experience.
Step 1: Inspection and Preparation
Before you start installing, every board needs to be individually inspected. Look for:
- Hidden nails or screws — use a metal detector or strong magnet across every surface
- Insect damage — small bore holes may indicate past infestation; ensure the wood has been properly treated
- Moisture content — use a pin-type moisture meter to check each board; aim for 6-9% for interior flooring
- Cupping, bowing, or twist — minor imperfections can be milled out, but severely warped boards should be set aside for shorter runs or cut pieces
Step 2: Acclimation
This step is critical and often overlooked. Reclaimed wood needs to acclimate to the environment where it will be installed. Stack the boards in the room with spacers between layers to allow air circulation. Let them sit for a minimum of two weeks — ideally three to four — before installation.
Monitor the room's temperature and humidity during this period. You want conditions that mirror normal occupancy: 65-75°F with 35-55% relative humidity.
Step 3: Subfloor Preparation
The subfloor must be clean, level, and dry. For reclaimed flooring, we recommend:
- Plywood subfloor (3/4" minimum) over joists for nail-down installation
- A moisture barrier if installing over concrete or in a basement-level space
- Leveling compound for any low spots — reclaimed boards are less forgiving of uneven subfloors because their thickness can vary slightly
Step 4: Layout Planning
Reclaimed flooring boards often vary in width, color, and character. Before nailing anything down, do a dry layout across the room. Mix boards from different bundles to achieve an even distribution of color variation and grain patterns. This is where the artistry comes in — a well-planned layout looks intentionally varied rather than randomly patchy.
Step 5: Installation
We recommend blind-nailing with a pneumatic flooring nailer for tongue-and-groove reclaimed flooring. For face-nailed plank flooring (common with wider reclaimed boards), pre-drill to prevent splitting — reclaimed hardwoods are dense and can be brittle.
Leave a 1/2" expansion gap along all walls. Use a chalk line to keep your first row perfectly straight, as the rest of the floor will follow that reference line.
Step 6: Sanding and Finishing
Most reclaimed flooring will need at least a light sanding to level the surface. Use a drum sander with 60-grit for the first pass, then 80-grit, then 100-grit. Be careful not to over-sand — the goal is a smooth surface, not the removal of all the character that makes reclaimed wood special.
For finish, we recommend a penetrating oil finish (like Rubio Monocoat or Osmo) for reclaimed floors. These finishes enhance the natural color and grain without creating a plastic-looking surface film, and they're easier to spot-repair over time.
If you have questions about your reclaimed flooring installation, give us a call. We're happy to advise — we want your floor to look as good as the wood deserves.
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