Yes, in most cases, engineered timber flooring benefits from underlay – though requirements depend on the installation method and subfloor type.

When Underlay is Necessary

• Floating installations: Essential, as it cushions the floor, reduces noise transfer, evens out minor subfloor imperfections, and provides a moisture barrier (if needed).

• Concrete subfloors: Helps isolate the flooring from moisture and temperature fluctuations; choose a moisture-resistant underlay like rubber or foam with a vapor barrier.

• Areas with noise concerns: Acoustic underlay minimizes impact and airborne sound, ideal for multi-level homes or bedrooms.

When It May Not Be Required

• Glue-down installations: If the subfloor is perfectly smooth, clean, and dry, some engineered planks can be glued directly – though a thin underlayment may still be used for moisture protection or sound reduction.

• Nail-down installations: Over wood subfloors, underlay is often optional but can still add cushioning and noise reduction.

Key Underlay Types

• Foam: Affordable, good for minor imperfections and sound reduction.

• Rubber: Durable, moisture-resistant, and excellent for sound control.

• Cork: Eco-friendly, provides warmth and sound insulation.