Soundproof Wall Cost: How Much Does a Soundproof Wall System Cost?

A soundproof wall is one of the most requested acoustic upgrades — between apartments, hotel rooms, offices and meeting rooms, studios, clinics and plant rooms. And the first question is almost always: how much does a soundproof wall system cost?

The honest answer is that there is no single price. The cost depends on the performance required, the type of wall system, the existing construction, the wall's area and height, its openings and penetrations, the junctions with floors and ceilings, and how the work fits into the building.

AcouStick helps project teams scope soundproof walls correctly before pricing them, with assessment, transmission-loss calculation and KSA-manufactured wall systems, barriers, damping products, resilient components and acoustic doors.

This guide explains what makes up a soundproof wall system, what drives its cost, how performance targets affect price, and how to get and compare accurate quotations.

What Is a Soundproof Wall System?

A soundproof wall system is a complete assembly designed to reduce airborne sound passing between two spaces. It is not a single product, and it is not an acoustic panel fixed to an existing wall. A National Research Council Canada research note on reverberant noise makes the distinction: sound passing to adjacent rooms depends on the insulating properties of the walls, while absorbing materials control sound within a room.

A soundproof wall system may include:

• Base structure — masonry or a stud frame.

• Board layers — one or more layers of dense board.

• Decoupling components — resilient channels, isolation clips, independent frames or resilient wall ties.

• Cavity insulation — mineral wool or similar.

• Barrier and damping layers — mass loaded vinyl or viscoelastic damping.

• Perimeter and penetration sealing — acoustic sealant and detailing.

• Openings — acoustic doors and glazing.

How Soundproof Walls Are Rated

Airborne sound insulation is rated as STC from ASTM E90 laboratory tests using ASTM E413, or Rw under ISO 717-1. Riverbank Acoustical Laboratories describes:

• STC 25–30 — speech easily understood through the partition.

• STC 50–55 — typical minimum code performance for shared walls; speech privacy at normal voice levels.

• STC 60–65 — loud sounds barely audible; suitable for executive offices.

• STC 65 and above — most sounds virtually inaudible; used in recording studios.

Site performance can differ from laboratory ratings — NRC Canada research warns that flanking can seriously impair a wall's insulation — and some codes set field values separately. England's Approved Document E, for example, sets a field target of at least 45 dB DnT,w + Ctr for walls between purpose-built dwellings.

What Determines Soundproof Wall Cost?

1. The Performance Target

The mass law, as defined in the Acoustical Society of America's standards terminology, states that doubling a panel's mass per unit area increases transmission loss by 6 dB. Each further 6 dB from mass alone needs twice the material, so higher targets rely on decoupled, multi-layer construction — and cost more per square metre.

2. The Existing Wall

NRC Canada research reports that a sealed single-leaf concrete block wall provides about STC 45 to 55, and that sealing porous block can add 5 to 10 STC points or more. An existing heavy wall may need only an upgrade; a lightweight partition may need rebuilding.

3. The Wall System Type

• Upgrade lining on an existing wall — added board layers, often on resilient channels or clips.

• New single-stud partition — frame, boards and insulation.

• Decoupled or double-stud partition — two separated frames for higher performance.

• Floating wall — independently supported, isolated leaf for studios and critical rooms.

• Masonry with independent lining — heavy base wall plus a separated lining.

NRC Canada research shows that adding gypsum board on furring or studs set away from a block wall can greatly improve insulation — but warns of a mass-air-mass resonance around 100 Hz that cavity design must address.

4. Wall Area and Height

Larger and taller walls need more material and access equipment. Walls that must run full height to the structural slab, rather than stopping at a suspended ceiling, add area and detailing.

5. Doors, Windows and Openings

A soundproof wall is only as good as its weakest element. Acoustic door sets and acoustic glazing are priced per item and can be significant.

6. Penetrations and Services

Electrical outlets, pipes, ducts and cables must be sealed or rerouted. Walls & Ceilings magazine stresses that installers must seal all penetrations and air leaks for rated walls to perform.

7. Flanking Junctions

NRC Canada warns that flanking along floors, ceilings and abutting walls can seriously impair a wall's insulation. ISO 12354-1 also describes indirect airborne paths through ventilation systems. Head, base and side junction details — and ceiling-void barriers — may be required.

8. Low Frequencies

Music, home cinema and plant noise need more mass, deeper cavities and better isolation. ISO 717-1 includes the Ctr adaptation term, based on a spectrum with relatively more low-frequency energy, for such cases.

9. Damping and Barrier Layers

Viscoelastic damping (Davy, Phillips and Pearse, Applied Acoustics, 2015) and mass loaded vinyl add performance within limited thickness, at additional material cost.

10. Finishes

Painted board, architectural panels or hygienic finishes; fire classification under ASTM E84 where relevant.

11. Site Conditions

Occupied buildings, phased work, restricted access and coordination with other trades.

12. Testing

Where performance must be proven, post-installation measurements add cost but confirm the result.

Why Published Prices Rarely Apply

Published consumer cost guides, mostly from the U.S. market, itemise walls, ceilings, floors, doors and windows separately (Angi, 2026; HomeGuide, 2025). Their figures reflect U.S. labour, materials and residential construction and do not translate to Saudi projects. They are useful mainly as a reminder that the wall, its door and its other openings are separate cost items.

A reliable soundproof wall price comes from a defined system, a performance target and the project's actual conditions.:

Example: Same Wall, Three Different Scopes

• Scope A — speech privacy between offices — upgraded lining on resilient channels, insulation, sealed penetrations and an acoustic door.

• Scope B — apartment party wall — decoupled lining, full-height detailing to the slab, flanking control at floor and ceiling junctions.

• Scope C — studio wall — independent floating wall with multiple dense layers, damping, a sound lock with two acoustic doors and attenuated ventilation.

The wall area might be identical in all three; the systems, and therefore the costs, are not.

How to Get an Accurate Soundproof Wall Quote

1. Describe the noise — speech, music, TV, plant or traffic, and when it occurs.

2. Set the target — STC, Rw or a site-measured level.

3. Share the existing construction — wall type, thickness, height and condition.

4. Provide drawings and photos — including floor and ceiling junctions.

5. List openings and services — doors, windows, outlets, pipes and ducts.

6. State finish and fire requirements

7. Note site constraints — access, occupancy and programme.

How to Compare Quotations

• Same system — layers, thicknesses, frames, isolation components, insulation and sealing.

• Same performance — target rating and supporting test data or calculations.

• Same scope — doors, glazing, penetrations, junctions, ceiling voids and services.

• Same exclusions — removal, reinstatement, access, testing and finishing.

Soundproof Walls in Saudi Arabia

Projects in the Kingdom range from villas and apartments to hotels, offices, clinics, studios and industrial plant rooms. Blockwork and lightweight partitions are both common, and large HVAC systems, glazing and hard finishes often accompany them. Coordinating wall systems with structure, ceilings and MEP early in design is usually more efficient than retrofitting after occupation.

Common Cost Mistakes

Mistake 1: Pricing the Wall Without the Door

The door is often the weakest point.

Mistake 2: Stopping the Wall at the Ceiling

Sound can pass over the top through the ceiling void.

Mistake 3: Using Acoustic Panels as a "Soundproof Wall"

Panels absorb; they do not block.

Mistake 4: No Performance Target

Without a target, quotes cannot be compared.

Mistake 5: Ignoring Penetrations

Unsealed outlets and pipes undermine performance.

Mistake 6: Choosing the Lowest Price

The lowest quote may cover the least complete system.

Soundproof Wall Checklist

• What noise is being blocked?

• What STC or Rw target is required?

• What is the existing wall construction?

• Which system type suits the target?

• Are doors, glazing and penetrations included?

• Are head, base and side junctions detailed?

• Are low frequencies considered?

• Is testing required?

How AcouStick Helps

AcouStick's engineering workflow — assessment and survey, acoustic modelling and design including transmission-loss calculation, specifications, shop drawings and submittals, and site support with installation guidance and commissioning — defines the wall system before the price. Its KSA-manufactured range includes:

• Wall systems — floating walls and resilient wall ties

• Mass and damping — mass loaded vinyl, damping products and barriers

• Openings — acoustic doors and windows

• Services — attenuators and acoustic lagging

• Room finish — acoustic panels for internal treatment where needed

Frequently Asked Questions

1. How much does a soundproof wall cost?

It depends on the target, system type, existing wall, area, openings, penetrations, junctions, finishes and site conditions. A reliable price needs a defined scope.

2. What is the cheapest way to soundproof a wall?

The cheapest effective approach depends on the weak point — sealing gaps and upgrading a door can matter as much as adding layers.

3. Does a higher STC cost more?

Generally yes, because higher targets need more mass, decoupling and detailing.

4. Can I soundproof an existing wall?

Often, with an upgrade lining on resilient components, sealing and flanking control.

5. Do acoustic panels make a wall soundproof?

No. Panels absorb sound inside a room; soundproofing needs sound insulation.

6. Why does my wall need full-height detailing?

Because sound can travel over a wall through ceiling voids and around it through junctions.

Final Takeaway

Soundproof wall cost is driven by the performance target and the complete system — wall, door, glazing, penetrations, junctions and services — not by the area alone. Defining the noise, the target and the full scope is the only reliable way to price and compare soundproof wall systems.

Planning a soundproof wall in Saudi Arabia? Share your drawings and noise concerns with AcouStick for an engineering review and scoped estimate.

For a soundproof wall estimate based on your actual project, send AcouStick your drawings, photos and noise concerns, and we will help define the right system.

Email: info@acoustick.co | Call: +966 51 130 809 | Web: www.acoustick.co

REFERENCES

• Warnock, A.C.C. "Reverberant Noise Control in Rooms Using Sound Absorbing Materials." Building Research Note, National Research Council Canada, June 1980: nrc-publications.canada.ca

• Riverbank Acoustical Laboratories. "Understanding Sound Transmission Class (STC) Ratings and Testing" — ASTM E90 / ASTM E413 procedure and STC ranges: riverbankacoustics.com

• International Organization for Standardization. ISO 717-1:2013, "Acoustics — Rating of sound insulation in buildings and of building elements — Part 1: Airborne sound insulation" (preview edition, iTeh Standards).

• HM Government. Approved Document E, "Resistance to the passage of sound," 2003 edition incorporating 2004, 2010, 2013 and 2015 amendments (England) — Section 0 performance tables: assets.publishing.service.gov.uk

• Acoustical Society of America Standards. Terminology entry "mass-law sound transmission loss": asastandards.org/terms/mass-law-sound-transmission-loss

• Warnock, A.C.C. "Controlling Sound Transmission through Concrete Block Walls." Construction Technology Update No. 13, National Research Council Canada, 1998: publications-cnrc.canada.ca

• Mooney, J.W. "The Hole-in-the-Wall Gang Rides Again." Walls & Ceilings, 24 July 2007 — sealing penetrations and perimeter gaps in rated walls: wconline.com

• International Organization for Standardization. ISO 12354-1:2017, "Building acoustics — Estimation of acoustic performance of buildings from the performance of elements — Part 1: Airborne sound insulation between rooms" (preview edition, iTeh Standards).

• Davy, J.L., Phillips, T.J., & Pearse, J.R. "The damping of gypsum plaster board wooden stud cavity walls." Applied Acoustics, Vol. 88, 2015, pp. 52–56 (ScienceDirect).

• ASTM International. ASTM E84, "Standard Test Method for Surface Burning Characteristics of Building Materials" — Class A/B/C thresholds as summarised by Intertek: intertek.com/building/standards/astm-e84

• Angi. "How Much Does It Cost to Soundproof a Room? (2026)" — U.S. national cost data: angi.com/articles/how-much-does-soundproofing-cost.htm

• HomeGuide. "How Much Does It Cost to Soundproof a Room?" Updated 5 November 2025 — U.S. cost data: homeguide.com/costs/cost-to-soundproof-a-room