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🏗️ Wall Systems
STC Improvement · Multi-Family & Commercial

Sound Board — Acoustic Gypsum Panels

Sound board is a gypsum panel system engineered to reduce sound transmission through wall and floor assemblies. Products like QuietRock, SilentFX, and similar acoustic gypsum panels replace or supplement standard drywall to achieve STC ratings that exceed standard construction without requiring thick or complex assemblies.

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Boston MA & New England
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Smooth installs sound board systems for multifamily residential, home theaters, recording studios, medical offices, and commercial environments throughout the Boston area. We combine sound board with appropriate insulation (mineral wool) and decoupling systems (resilient channel) for maximum acoustic performance.

Key Benefits

STC 50–65+ achievable

Sound board combined with resilient channel and mineral wool insulation can achieve STC ratings approaching hotel-quality sound isolation

Drop-in replacement for standard drywall

Installs with standard tools — no specialized framing required for many applications

Multiple product options

QuietRock, SilentFX, SoundBreak — we specify the right product for your STC target and budget

Combined system approach

Best results achieved with sound board + resilient channel + mineral wool — we design and install the complete system

Our Process

STC Target Determination

Required STC rating confirmed from code, lease requirements, or owner preference.

System Design

Sound board, resilient channel, insulation, and framing system designed to achieve target.

Installation

Resilient channel attached to framing. Sound board installed with appropriate fastening.

Penetration Sealing

All electrical, plumbing, and HVAC penetrations acoustically sealed.

FAQ

Massachusetts requires a minimum STC 50 for wall and floor assemblies between dwelling units in multifamily residential buildings (780 CMR). Many owners target STC 55–60 for quality construction.
Sound Transmission Class (STC) is the standard measure of how much a wall or floor assembly reduces sound transmission. Higher numbers mean better sound isolation. Normal speech is essentially inaudible at STC 50+.

Free Estimate

Response within 2 hours. Mass Save® eligibility reviewed on every quote.

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Mass Save® Rebates

Most MA homeowners qualify for 75–100% rebates on qualifying insulation and air sealing projects. We handle all paperwork.

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Free estimate. Mass Save® eligibility reviewed. Response within 2 hours, Mon–Fri.

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