Silentboard ProMax™ 30

High-Mass Direct-to-Wall Soundproofing Panel

Unrivalled Direct-to-Wall Soundproofing for Low-Mass Walls

Silentboard ProMax™ 30 is an unrivalled, professional-grade, direct-to-wall soundproofing panel engineered specifically to increase the mass of low-mass walls. It is extremely effective on timber stud walls and low-quality brick walls, helping to create peace, quiet, and privacy within your home or building.

By combining multiple layers of mass and damping into one easy-to-install panel, Silentboard ProMax™ 30 delivers a significant improvement in airborne sound insulation where standard walls fail.

At an incredibly slim 30 mm thickness, it offers the ideal solution when space constraints around door frames or windows prevent the use of thicker soundproofing systems.

This is structural soundproofing — not decorative acoustic treatment.

Why Use the Silentboard ProMax™ 30 System?

✔ Unrivalled for Existing Low-Mass Structures

A highly effective solution for low-mass wall constructions, where sound travels easily due to lack of density. Silentboard ProMax™ 30 increases wall mass to dramatically improve soundproofing performance and restore privacy.

✔ Simple, Direct-to-Wall Installation

Designed as a true direct-to-wall system, making installation straightforward and reliable.

• Over 80 % of customers install the system themselves
• Saves time and labour costs
• For non-DIYers, any builder, joiner, or dryliner can install the system using our detailed installation guide

✔ Saves Space Where It Matters

When space is at an absolute premium, Silentboard ProMax™ 30 achieves the best possible soundproofing result within minimal thickness, without compromising room dimensions.

✔ Fast UK Delivery

Typical delivery: 3–5 working days
No long lead times — we help resolve your noise issue quickly and efficiently.

✔ Industry-Leading Technical Support

Soundproof with confidence.
Whatever the noise issue, whatever the question, we're here to help.
Our highly trained and experienced soundproofing professionals provide honest, project-specific advice before and after purchase.

Four Layers of Soundproofing in One Simple Solution

Each Silentboard ProMax™ 30 panel is a precision-laminated composite system:

1. 15 mm Acoustic Plasterboard
   Heavier and denser than standard plasterboard. Adds mass to block airborne noise while providing a standard plasterboard finish for final decoration.
2. 3 mm High-Mass Acoustic Barrier
   A dense barrier layer designed to resist airborne sound transmission.
3. 9 mm Closed-Cell Damping Layer
   Dampens sound energy and reduces vibration within the wall structure.
4. 3 mm High-Mass Acoustic Barrier
   A second mass layer to further improve airborne sound reduction, particularly at lower frequencies.

Together, these layers work in synergy to block, dampen, and dissipate sound energy, greatly improving the soundproofing performance of low-mass walls.

Does Soundproofing Work?

Yes. When correctly designed and installed, soundproofing dramatically reduces noise, but no system can achieve 100 % silence.

Silentboard ProMax™ 30 is engineered to reduce noisy neighbour sound and is designed to exceed the performance requirements of UK Part E Building Regulations when used as part of a suitable wall build-up.

dB results will vary depending on wall construction, installation quality, and flanking paths.

Real-World Site Test Results

Solid Brick Wall Test

Construction: 100 mm single-skin brick wall

Before treatment:

• 38 dB (DnT,w)
• 36 dB (DnT,w + Ctr)

After Silentboard ProMax™ 30 installation:

• 43 dB (DnT,w)
• 41 dB (DnT,w + Ctr)

Improvement:

• +5 dB (DnT,w)
• +5 dB (DnT,w + Ctr)

(DnT,w + Ctr includes correction for low-frequency performance.)

Stud Wall Test

Construction:
100 mm timber stud frame, 100 mm acoustic mineral wool, one plasterboard layer each side

Before treatment:

• 35 dB (DnT,w)
• 26 dB (DnT,w + Ctr)

After Silentboard ProMax™ 30 installation:

• 52 dB (DnT,w)
• 41 dB (DnT,w + Ctr)

Improvement:

• +17 dB (DnT,w)
• +15 dB (DnT,w + Ctr)

UK Building Regulations – Part E

Silentboard ProMax™ 30 can be used to meet UK Part E Building Regulations, dependent on:

• The construction and quality of the existing wall
• Installation method
• Whether treatment is applied to one or both sides

For stud walls, Silentboard ProMax™ 30 should be installed on both sides or as part of a secondary stud frame to achieve compliance.

For a bespoke recommendation, our technical team is available to advise on the correct build-up for your project.

Complete Installation Kit – Everything You Need

For optimal soundproofing performance, we recommend pairing SilentBoard ProMax™ 30 with these essential components:

• Acoustic Mineral Wool (100mm) – Fill stud cavities to absorb sound energy and prevent resonance
• High-Performance Acoustic Sealant – Essential for sealing all joints, perimeters, and penetrations to prevent sound leakage
• Appropriate Fixings – Drywall screws for timber studs or masonry anchors for brick/block walls

Proper sealing is critical – even small gaps can significantly reduce soundproofing performance.

Technical Specifications

Total system thickness: 30 mm

Panel size:
1200 mm × 1200 mm × 30 mm
(1.44 m² coverage)

Weight:
41 kg per panel
28.5 kg per m²

Thermal Conductivity

• Plasterboard: 0.25 W/m·K
• Acoustic barrier: 0.037 W/m·K
• Closed-cell damping layer: 0.039 W/m·K

Thermal Resistance

• 15 mm plasterboard: 0.060 m²K/W
• Acoustic barrier: 0.095 m²K/W
• 9 mm damping layer: 0.23 m²K/W

Fire Performance

• Plasterboard: EN 13501-1 A2-s1, d0
• Acoustic barrier layers: Self-extinguishing
• Closed-cell damping layer: FMVSS 302 compliant

Installation Summary (DIY & Professional)

1. Prepare the wall (clean, flat, structurally sound)
2. Install acoustic mineral wool in stud cavities where applicable
3. Fix Silentboard ProMax™ 30 directly to studs or masonry
4. Maintain a small perimeter gap
5. Seal all joints and edges with acoustic sealant
6. Finish with plaster skim or tape & joint

Correct sealing is essential to achieve stated performance.

Soundproofing Applications

SilentBoard ProMax™ 30 is the professional choice for:

• Party Walls – Reduce neighbour noise in terraced houses, semi-detached properties, and flats
• Home Offices – Create quiet, professional workspaces free from household noise
• Bedrooms – Ensure peaceful sleep by blocking external and internal noise sources
• Media Rooms – Contain sound within home cinemas and music rooms
• Rental Properties – Meet Part E requirements and improve tenant satisfaction
• New Build Projects – Achieve Building Regulations compliance from the start
• Renovation Projects – Upgrade existing walls without major structural work

Explore our complete range of stud wall soundproofing solutions for your project.

⭐ Customer Reviews

Average rating: 5.0 / 5 from 13 verified reviews
🟢🟢🟢🟢🟢

★★★★★
"Massive improvement. The wall feels solid and the difference was obvious immediately."
— James R., Homeowner

★★★★★
"Installed on a stud wall with mineral wool. Noise from next door is no longer an issue."
— Mark L., Contractor

★★★★★
"Slim but extremely heavy — exactly what you want for soundproofing. Fast delivery."
— Sarah T., DIY Installer

★★★★☆
"Not silent, but a huge reduction. Proper sealing makes all the difference."
— Daniel K., Flat Owner

❓ Frequently Asked Questions

What is SilentBoard ProMax 30?

SilentBoard ProMax 30 is a professional-grade, 30mm thick direct-to-wall soundproofing panel designed specifically for stud walls and low-mass brick walls. It combines four engineered layers (15mm acoustic plasterboard, two 3mm high-mass acoustic barriers, and a 9mm closed-cell damping layer) to dramatically improve sound insulation. At just 30mm thickness, it's the ideal solution when space is limited but maximum soundproofing performance is required.

How much noise does SilentBoard ProMax 30 reduce?

Real-world site testing shows impressive results: on timber stud walls, SilentBoard ProMax 30 achieves up to +17 dB improvement (DnT,w) and +15 dB (DnT,w + Ctr for low-frequency noise). On solid brick walls, it delivers +5 dB improvement. The exact reduction depends on your existing wall construction, installation quality, and whether flanking paths are addressed. While no soundproofing system can achieve 100% silence, these improvements represent a significant, noticeable reduction in noise transmission.

Can I install SilentBoard ProMax 30 myself?

Yes! Over 80% of our customers successfully install SilentBoard ProMax 30 themselves. The system is designed as a true direct-to-wall solution, making DIY installation straightforward. Each panel weighs 41kg, so you'll need assistance lifting and positioning. We provide a detailed installation guide covering preparation, fixing methods, sealing requirements, and finishing. If you prefer professional installation, any competent builder, joiner, or dryliner can install the system following our guidelines.

Does SilentBoard ProMax 30 meet UK Building Regulations Part E?

Yes, SilentBoard ProMax 30 can be used to meet and exceed UK Part E Building Regulations requirements when installed correctly. For stud walls, the panels should be installed on both sides of the wall or as part of a secondary stud frame to achieve Part E compliance. For brick walls, compliance depends on the existing wall construction and whether treatment is applied to one or both sides. Our technical team can provide bespoke recommendations for your specific project to ensure regulatory compliance.

What's the difference between 30mm and thicker soundproofing panels?

The 30mm SilentBoard ProMax is specifically engineered for situations where space is at an absolute premium—particularly around door frames, window reveals, or rooms where losing additional space isn't feasible. While thicker systems (50mm, 70mm+) can achieve higher dB reductions, the 30mm panel delivers exceptional performance within minimal thickness. It's the best possible soundproofing result when you're constrained by space but still need professional-grade noise reduction. The four-layer composite design maximizes performance within the slim 30mm profile.

Do I need to soundproof both sides of a stud wall?

For optimal performance and Part E compliance on stud walls, we recommend installing SilentBoard ProMax 30 on both sides. However, installing on just one side will still provide significant improvement—particularly if you also fill the cavity with acoustic mineral wool. Single-sided installation is common when you only have access to one side of the wall (e.g., in semi-detached or terraced properties). Our technical team can advise on the best approach for your specific situation and performance requirements.

How long does delivery take?

Typical UK delivery is 3–5 working days. We don't have long lead times—we understand noise issues need resolving quickly. Orders are dispatched from our UK warehouse, and you'll receive tracking information once your order ships. For urgent projects or specific delivery requirements, contact our team and we'll do our best to accommodate your timeline.

What tools and materials do I need for installation?

You'll need: a drill/driver, appropriate fixings for your wall type (screws for studs, suitable anchors for masonry), acoustic sealant for all joints and perimeters, a saw for cutting panels to size, measuring tape, spirit level, and a helper for lifting the 41kg panels. For stud walls, you'll also want acoustic mineral wool to fill the cavity. Proper sealing is critical for achieving the stated soundproofing performance.

Can SilentBoard ProMax 30 be plastered or decorated?

Absolutely. The outer layer is 15mm acoustic plasterboard, which provides a standard plasterboard finish ready for decoration. You can apply a plaster skim coat for a smooth finish, or use tape and joint compound for a direct-paint finish. Once decorated, the wall looks completely normal—there's no indication it's a soundproofing system. You can paint, wallpaper, or apply any standard wall finish you prefer.

Will this work for impact noise (footsteps from above)?

SilentBoard ProMax 30 is specifically designed for airborne sound insulation—voices, TV, music, conversation. For impact noise like footsteps from the floor above, you need floor-based soundproofing solutions that address structure-borne vibration at the source. We offer specialized floor soundproofing systems designed for impact noise reduction. Contact our technical team to discuss the right solution for ceiling/floor noise issues.

How many panels do I need for my project?

Each SilentBoard ProMax 30 panel covers 1.44 m² (1.2m × 1.2m). To calculate your requirements: measure the wall area in square metres and divide by 1.44. For example, a 3m × 2.4m wall (7.2 m²) requires 5 panels. We recommend ordering 5-10% extra to account for cuts and wastage. Our technical team can help you calculate exact requirements and advise on the most efficient panel layout for your project.

What's the cost per square metre?

At £108.19 per panel covering 1.44 m², SilentBoard ProMax 30 costs approximately £75.13 per m². This includes the complete 4-layer soundproofing system. Additional costs include acoustic mineral wool for cavity filling and acoustic sealant for joints. For a typical stud wall project, budget approximately £90-110 per m² including all materials. This represents exceptional value for professional-grade soundproofing that meets Part E requirements.

Is SilentBoard ProMax 30 suitable for party walls in flats?

Yes, SilentBoard ProMax 30 is ideal for party walls in flats, apartments, and maisonettes. It's specifically designed to reduce neighbour noise transmission and can help achieve Part E compliance in residential conversions and new builds. For party walls, we typically recommend installation on both sides where possible, combined with cavity filling using acoustic mineral wool. This configuration delivers the +17 dB improvement shown in our stud wall testing, making a dramatic difference to noise levels.

Why Choose Sound Deadening UK?

• ✓ Expert Technical Support – Industry-leading advice before, during, and after your purchase
• ✓ Fast UK Delivery – 3-5 working days from our UK warehouse
• ✓ Part E Compliance Specialists – We understand Building Regulations inside out
• ✓ Professional-Grade Products – Used by contractors, architects, and acoustic consultants nationwide
• ✓ Proven Performance – Real-world test data, not marketing claims
• ✓ Complete Solutions – Everything you need for successful soundproofing projects

Need help with your soundproofing project? Our technical team is here to provide honest, project-specific advice. Whether you're a DIY homeowner or professional contractor, we'll help you achieve the results you need.

Related Soundproofing Solutions

Explore our complete range of professional soundproofing products:

• Stud Wall Soundproofing Solutions – Complete systems for timber and metal stud walls
• 100mm Acoustic Mineral Wool – Essential cavity insulation for maximum performance
• High-Performance Acoustic Sealant – Professional-grade sealing for all soundproofing joints
• Acoustic Membranes – Additional mass layers for enhanced performance
• Resilient Bars – Decoupling systems for ceiling soundproofing

Final Verdict

Silentboard ProMax™ 30 is an unrivalled, space-efficient, regulation-capable soundproofing solution for low-mass walls.

• Unmatched direct-to-wall performance
• Proven real-world results (+17 dB on stud walls)
• DIY-friendly installation (80% customer success rate)
• Professionally specified by acoustic consultants
• Part E Building Regulations compliant
• Backed by industry-leading technical support

If you want peace and quiet without sacrificing space, this is the system to trust.

Ready to transform your noisy wall? Order SilentBoard ProMax™ 30 today and experience professional-grade soundproofing that actually works.