In places with high acoustic requirements such as theaters, recording studios, and meeting rooms, calcium silicate acoustic panels have become an indispensable decorative material. They not only retain the excellent properties of calcium silicate boards—such as fire resistance, corrosion resistance, insect resistance, high strength, and high toughness—but also effectively absorb noise and reduce reverberation through perforated design, creating an ideal acoustic environment for the space.

As a professional manufacturer of calcium silicate acoustic panels, Tengfei Editor is here to walk you through the complete construction process for these beautiful and functional wall panels.

What Are Calcium Silicate Acoustic Panels?

Calcium silicate acoustic panels are perforated sound-absorbing panels made from precision-punched calcium silicate base boards. These perforations work in conjunction with backings (such as rock wool) to form a resonant structure that effectively absorbs mid-to-high frequency noise.

Their key advantages include:

• Class A Fire Resistance: Non-combustible material, no toxic fumes released during fires
• Moisture and Corrosion Resistant: Remains stable in humid environments, no swelling or deformation
• Noise Reduction: Capable of meeting mid-to-high frequency and broadband sound absorption requirements
• High Strength and Toughness: Stronger than ordinary gypsum boards, not easily damaged

I. Material Preparation

1. Calcium Silicate Acoustic Panels: Thickness and dimensions selected according to design requirements
2. Matching Light Steel Keel: Compliant with national standard GB11981-2008
3. Keel Accessories: Support clips, connectors, fixings, etc.
4. Fastening Materials: Nail guns, expansion bolts, galvanized self-tapping screws
5. Filling Material: Rock wool felt (selected according to design requirements)

II. Construction Tools

Welding machine, electric drill, electric self-tapping screwdriver, nail gun, plumb line, straight edge, scraper, etc.

III. Construction Conditions

• Construct a sample wall first, proceed with mass installation only after acceptance inspection
• Moisture-proof layer has passed acceptance inspection
• Room marked with elevation reference line (+1250px)
• Ambient temperature not lower than 5°C

IV. Detailed Construction Steps

Step 1: Mark Wall Layout

Snap layout lines on the floor for the wall position, and extend these lines to the ceiling and side walls. Ensure the layout marking is accurate and clear.

Step 2: Install Top and Bottom Tracks

Secure the floor and ceiling runner tracks to the floor slab and ceiling structure using a nail gun. Nail spacing should be 0.6 meters (adjustable based on design requirements).

Step 3: Mark Stud Positions

Mark the positions for vertical studs on the installed floor and ceiling tracks:

• Wall height less than 3 meters: Stud spacing 600mm
• Wall height exceeding 3 meters: Reduce spacing to 400mm
  This ensures the stability of the calcium silicate acoustic panel wall.

Step 4: Install Vertical Studs

Arrange the vertical studs according to design requirements and install necessary horizontal reinforcements. Secure the top and bottom ends of the studs with rivets. Ensure the punching direction on the studs is consistent and the layout is neat.

Step 5: Rough-in Utilities

Reserve openings within the stud framework for electrical and plumbing lines. Implement local reinforcement measures around these openings. This step must be completed before panel installation.

Step 6: Install Sound-Absorbing Material

Cut the rock wool felt to fit the spaces between studs and secure it within the stud cavities using construction adhesive. Ensure the filling is uniform and dense, without sagging or voids. Installing rock wool is a critical step for maximizing sound absorption.

Step 7: Install Calcium Silicate Acoustic Panels

1. Panel Fixation: Secure the panels using 4mm × 25mm self-tapping screws.
2. Screw Spacing: ≤ 200mm along panel edges, ≤ 300mm in the panel field.
3. Screw Requirements: ≥ 15mm from panel edges, ≥ 50mm from panel corners. Screw heads should be slightly countersunk (approx. 1mm below panel surface).
4. Joint Preparation: Leave a 5-7mm gap between panels for joint treatment.

When fixing, start from the center of the panel and work outwards to ensure it is flat and securely attached.

Step 8: Joint Treatment

1. Apply joint compound into the gaps in 2-3 layers.
2. Embed joint tape over the compound.
3. Apply a finishing layer of skim coat and sand smooth.

Step 9: Surface Finishing

Apply the final decorative finish according to design specifications. Ensure not to block the acoustic perforations, preserving the sound absorption performance.

V. Construction Precautions

1. Handle with Care: Prevent damage to panel edges and corners during transport and installation.
2. Protect from Moisture: Avoid installing in excessively humid conditions that could cause panel deformation.
3. Ensure Ventilation: Allow panels to acclimate and ventilate for at least 24 hours after installation before full use.
4. Control Flatness: Check with a 2-meter straight edge; permissible deviation ≤ 2mm.

VI. Common Applications

Calcium silicate acoustic panels are widely used in:

• Theaters, Concert Halls
• Recording Studios, Broadcast Rooms
• Meeting Rooms, Multi-purpose Halls
• Equipment Rooms, Machine Rooms
• Schools, Hospitals
• Shopping Malls, Subway Stations, and other public buildings