Wood Wool Acoustic Panels: Specifications & 2026 Price Guide India

Composition & Manufacturing: Magnesite vs Portland Cement Binder

Wood wool acoustic boards are composed of three basic ingredients: sustainable softwood excelsior fibers (typically 1mm to 2mm fiber width), mineral binding agents, and water.

Magnesite-Bonded Wood Wool: Premium acoustic panels utilize caustic magnesite cement. Magnesite binders preserve the natural cellular porosity of wood fibers without calcifying them, producing a softer, lighter panel with higher acoustic absorption (NRC 0.85 to 0.95) and a refined architectural surface texture.

Portland Cement-Bonded Wood Wool: These panels use standard cement, yielding a heavier, more rigid board. While slightly less absorbent in the higher frequencies, they offer extreme impact resistance, making them ideal for gymnasium walls and industrial machine enclosures.

Acoustic Absorption Spectrum (NRC 0.80 to 0.95)

The open, fibrous, three-dimensional labyrinth of wood wool boards creates high airflow resistivity. Sound waves entering the panel lose energy through viscous boundary-layer friction as air molecules vibrate within the interconnected pores.

A 20mm or 25mm thick wood wool panel mounted directly against a hard concrete wall delivers an NRC rating of approximately 0.60 to 0.65, absorbing primarily mid and high frequencies.

However, when installed over a 50mm air gap or lightweight GI stud framing backed with 50mm (48 kg/m³) Rockwool insulation, the assembly transforms into a high-performance broadband acoustic absorber with an NRC of 0.85 to 0.95, effectively absorbing challenging low-frequency reverberation down to 125 Hz.

Durability, Humidity Resistance & Termite Protection in India

Standard mineral fiber ceiling tiles and lightweight foam panels suffer from sagging, water staining, and termite attacks in humid Indian climates. Wood wool panels solve these issues permanently.

Mineralized Protection: During manufacturing, wood fibers are completely saturated with mineral salts prior to binding. This mineralization process renders the organic wood fibers totally immune to termite attacks, carpenter ants, and fungal rot.

Moisture & Impact Resilience: Wood wool boards have natural hygroscopic moisture-buffering capacity, absorbing ambient moisture during humid monsoon periods and releasing it during dry months without structural warping or delamination. Their high tensile impact strength makes them virtually indestructible against ball strikes in indoor sports complexes.

Architectural Aesthetics & Custom Color Spraying

Gone are the days when wood wool boards looked like crude industrial packing material. Today, architects across Mumbai, Bangalore, and Delhi specify wood wool for its warm, tactile, biophilic aesthetic.

Panels are factory-bevelled (square edge, chamfered edge, or tegular edge) in standard modular sizes: 600mm x 600mm, 1200mm x 600mm, or geometric hexagonal and triangular tiles.

They can be spray-painted in custom RAL and Asian Paints shades using micro-porous acoustic coatings that preserve fiber porosity without clogging acoustic pores.

Comprehensive 2026 Price Breakdown in India

Wood wool acoustic boards offer one of the highest performance-to-cost ratios in commercial acoustic design.

Standard 15mm/20mm Natural Pine Wood Wool Board (1200 x 600mm, unpainted): ₹75 to ₹115 per sq. ft. ex-factory.

Premium 25mm Magnesite-Bonded Acoustic Board (Factory RAL painted, bevelled edges): ₹120 to ₹180 per sq. ft.

Turnkey Installed System (including GI framework, 50mm 48 kg Rockwool cavity backing, black tissue, fasteners, and installation labor): ₹220 to ₹350 per sq. ft.

Frequently Asked Questions