Home renovations often raise practical questions, and one of the most common is whether engineered hardwood can be installed over an existing parquet floor. The short answer is generally yes, but success depends on a careful evaluation of the parquet’s condition, material composition, and the subfloor system beneath it. This guide will walk you through the critical factors to determine if this installation method makes sense for your specific project, balancing feasibility with long-term durability.
Understanding Parquet Subfloors
Parquet floors are typically installed over a subfloor, which can be either concrete or wood joists. If your parquet is glued directly to a concrete slab, the slab itself acts as the subfloor. If it sits on wood, the parquet strips are usually nailed or glued to battens or a secondary underlayment. Before laying engineered hardwood over parquet, you must verify that this base is structurally sound, level, and dry. Any movement or moisture in the existing surface will eventually transfer to the new flooring, causing cracks or buckling.
Assessing Condition and Height
The physical condition of the parquet is the primary deciding factor. If the panels are loose, cracked, or hollow when tapped, they need to be repaired or removed before proceeding. Additionally, consider the height increase: adding a layer of engineered hardwood over parquet will raise the floor level in the room. This requires checking transitions to doorways, heating, and adjacent rooms to avoid creating uncomfortable tripping hazards or jammed doors.
- Securely attached panels with no flexing.
- No significant cracks, warping, or water damage.
- Surface is clean, dry, and free from old adhesive residue.
- Height difference is minimal and transitions are planned.
The Role of Underlayment
Underlayment is a non-negotiable component when installing engineered hardwood over parquet. Its functions include providing a moisture barrier, smoothing minor imperfections, reducing impact noise, and allowing for slight movement of the old floor. Choosing the right type—whether foam, cork, or rubber composite—depends on your floor thickness and acoustic requirements. Skipping this layer risks voiding the warranty of your engineered hardwood and leads to premature wear.
Acoustic and Comfort Considerations
One often overlooked reason to install underlayment is sound management. Parquet floors can be noisy, and without proper damping, footsteps and impacts will carry through to the rooms below. A quality underlayment significantly reduces this noise, making the combined floor more comfortable and compliant with modern building standards for multi-level homes.
Installation Methodology
The recommended installation method for engineered hardwood over parquet is floating installation. This means the planks connect via tongue-and-groove but are not nailed or glued to the subfloor, allowing for slight movement. You must, however, secure the planks to each other with careful tapping and use transition strips at doorways. Always follow the manufacturer’s guidelines regarding expansion gaps, as the flooring needs room to shift with temperature and humidity changes.
| Transition Type | Best Used When |
|---|---|
| Reducer Strip | Joining hardwood to lower tile or stone. |
| T-Molding | Two equal-height floors meet in doorways. |
| Schluter-Edging | Creating a seamless, waterproof perimeter. |
Moisture and Compatibility
Moisture is the enemy of both parquet and engineered hardwood. If the existing parquet was installed with a vapor barrier, you are in a better position; if not, you risk trapping humidity between the layers. A moisture meter is essential before you start. Furthermore, ensure the engineered hardwood is compatible with the old surface; some rigid underlayments can create a "hinge effect" if the parquet has even slight give, leading to joint failure over time.
When Removal Is the Better Option
While laying engineered hardwood over parquet saves time and money, removal is sometimes the superior long-term investment. If the parquet is old, brittle, or installed with non-removable adhesives, tearing it out ensures a clean, known substrate. This allows for proper underlayment, better floor leveling, and peace of mind regarding hidden damage. For homeowners seeking a premium, worry-free result, starting with a bare slab or plywood deck is often worth the extra labor.
