Do Wood Wall Panels Need to Acclimatise? Yes — Here's Why It Matters

What Is Acclimatisation?

Acclimatisation — also called conditioning or acclimation — is the process of leaving your wall panels in the room where they'll be installed for a period before fitting them. During this time, the panels adjust to the temperature and relative humidity of that specific room, expanding or contracting until they reach equilibrium with their environment.

Skip this step and you risk panels that bow, warp, or develop gaps after installation — not because the product is faulty, but because the panels are still moving in response to environmental conditions they haven't yet stabilised to.

Why Wood-Based Panels Move

Wood and engineered wood products (MDF, plywood, OSB) are hygroscopic — they absorb and release moisture from the surrounding air. As moisture content changes, the material expands (when moisture increases) or contracts (when it decreases).

A panel manufactured in a climate-controlled factory and shipped in a sealed package arrives at your home in a different state to the conditions it will experience on your wall. Even a 2–3% change in moisture content can cause a 96-inch panel to expand or contract by several millimetres — enough to create visible bowing or open gaps between panels.

How Long Do Panels Need to Acclimatise?

• Minimum: 24 hours — sufficient for rooms with stable temperature and humidity similar to the delivery vehicle/warehouse conditions
• Standard: 48 hours — recommended for most domestic rooms
• Extended: 72+ hours — recommended for rooms with higher humidity variation (bathrooms, kitchens, basements) or if panels have been stored in significantly different conditions (cold garage, heated warehouse)

How to Acclimatise Panels Correctly

• Store flat — never lean panels against a wall during acclimatisation. Leaning causes gravity-induced bowing that can be difficult to correct during installation, especially in panels that have begun to take a set.
• Keep in the installation room — acclimatising in a different room (hallway, garage) doesn't help. The panels need to be in the specific environment they'll be installed in.
• Remove packaging — leave panels loosely covered or uncovered so air can circulate around them. Keeping panels sealed in packaging prevents the moisture exchange that acclimatisation relies on.
• Maintain normal room conditions — don't heat or dehumidify the room more aggressively than usual during acclimatisation, and don't install in a room that's been freshly plastered or painted (high moisture content in fresh plaster needs to dry fully first).

Signs You Didn't Acclimatise Long Enough

If panels weren't fully acclimatised before installation, you may notice:

• Gaps opening between panels in the weeks after installation
• Panels bowing slightly away from the wall in the centre
• Raised edges where panels meet (the "cupping" effect)

In most cases, panels that were only slightly under-acclimatised will stabilise over time as the adhesive constrains further movement. Severely bowed panels may need to be removed, allowed to fully acclimatise, and reinstalled.

Does This Apply to All Panel Types?

Wood veneer over MDF: yes, acclimatisation required.
WPC (Wood Plastic Composite): minimal movement, but 24 hours is still recommended.
PVC panels: no acclimatisation required — PVC doesn't absorb moisture.
Solid timber planks: most critical — allow 5–7 days for solid wood.

The SoundPanel™ acoustic slat panels use a real wood veneer over MDF core — 48 hours acclimatisation is the standard recommendation before installation. For the full installation process this fits into, see our step-by-step slat panel installation guide.

Order Your Panels

Browse the complete wood wall panel collection at The Panel Hub — order early enough to allow the recommended 24–48 hour acclimatisation period before installation day. The SoundPanel™ acoustic slat range includes acclimatisation guidance in the product specification. For design inspiration, our interior slat wall ideas guide covers 50+ room applications. The acoustic panel buyer's guide covers material construction — useful context for understanding why wood-based panels need time to adjust to room conditions.