Professional 4mm Self-Adhesive Acoustic Barrier – 7 kg/m² High-Mass Soundproofing Membrane (6.1 m² Roll)

SilentCloud™ ProMass 70

Professional Self-Adhesive Acoustic Barrier Membrane (4mm)

SilentCloud™ ProMass 70 is a professional-grade 4mm self-adhesive acoustic membrane engineered to add critical mass, damp structural vibration, and substantially reduce airborne noise transmission across walls, ceilings, and floors.

Developed for professional installers and demanding DIY soundproofing projects, ProMass 70 delivers true high-mass performance (7 kg/m²) in a slim, easy-to-handle format. The high-tack peel-and-stick backing allows for fast, clean installation without compromising acoustic performance—making it one of the most practical high-density membranes available for real-world soundproofing systems.

“Feels properly heavy and professional the moment you handle it. Installation was far quicker than expected.”
★★★★★ Verified Buyer

Key Benefits

• High-mass acoustic performance – approx. 7 kg/m² density to effectively block airborne sound

• Slim 4 mm profile – powerful noise reduction without significant loss of room space

• Self-adhesive backing – fast, clean installation with strong, reliable adhesion

• Vibration-damping layer – reduces resonance in lightweight constructions

• Professional-grade material – suitable for residential and commercial applications

• Multi-use versatility – ideal for walls, ceilings, floors, studios, home cinemas, and offices

“Used this in a home cinema build and the difference was immediately noticeable. Excellent product.”
★★★★★ Verified Installer

Technical Specifications

• Product Name: SilentCloud™ ProMass 70

• Type: Self-Adhesive Acoustic Barrier Membrane

• Thickness: 4 mm

• Mass: 7 kg/m²

• Roll Size: 5.0 m × 1.22 m

• Coverage per Roll: 6.10 m²

• Backing: High-tack pressure-sensitive adhesive with release liner

• Application: Internal soundproofing systems

• Finish: Neutral membrane surface

Typical Applications

Walls (Stud & Party Walls)

Adds mass to plasterboard constructions to reduce voices, television noise, and general airborne sound. Particularly effective in flats, terraced housing, and home offices.

Ceilings

Used as part of ceiling soundproofing systems to reduce noise transfer between floors. Best combined with resilient bars or isolation clips for optimal results.

Floors

Ideal within floating floor or overlay systems to improve airborne sound reduction in lightweight floor constructions.

“Installed under a floating floor system. Footfall and general noise transfer reduced noticeably.”
★★★★☆ Verified Buyer

Installation Overview

Tools required: Utility knife, tape measure, roller or firm hand pressure, acoustic sealant.

1. Ensure the surface is clean, dry, and dust-free

2. Measure and cut the membrane to size

3. Gradually peel back the release liner

4. Press firmly onto the surface, applying even pressure

5. Seal all joints and perimeters with acoustic sealant

6. Finish with plasterboard, flooring, or system layers

Important: Maximum soundproofing performance depends on correct system design. All joints and edges must be fully sealed. No single product provides complete soundproofing in isolation.

Coverage & Quantity Guide

• Coverage per roll: 6.1 m²

• Recommended allowance: +10 % for cuts and detailing

Calculation:
Total area (m²) ÷ 6.1 = number of rolls required (round up)

Recommended System Components

For best results, pair ProMass 70 with:

• Acoustic Mineral Wool (AMW)

• Resilient Bars or Isolation Clips

• Acoustic Plasterboard

• Acoustic Sealant

Effective soundproofing is achieved through the correct balance of mass, isolation, absorption, and airtight sealing.

Frequently Asked Questions

Is this equivalent to Tecsound SY70?
SilentCloud™ ProMass 70 delivers comparable high-mass acoustic performance without branded dependency or inflated marketing costs.

Can it be installed on ceilings?
Yes. When applied to suitable substrates with proper surface preparation and firm pressure.

Does it reduce impact noise?
It is primarily designed for airborne noise. Impact noise control requires isolation systems such as resilient bars or floating floor constructions.

Is it waterproof?
ProMass 70 is designed for internal dry applications only.