Acoustic Assemblies
Soundproofing That Actually Quiets the Room
Valcast Construction USA Inc. builds soundproofing assemblies for homes, offices and multi-family buildings throughout Noblesville and the north side of Indianapolis. Call or text (463) 777-2799 or request an estimate and we will listen to the actual noise problem before we quote a fix for it.
- Specialized trades under one contract
- Residential & commercial
- Rated assemblies done right
- Free written estimates
How Sound Actually Gets Through a Wall
There are four levers in any acoustic assembly, and a real fix usually pulls on more than one. Mass slows sound down. Decoupling breaks the physical path so vibration in one leaf of the wall does not drive the other. Damping converts vibration into a small amount of heat inside the panel. Absorption soaks up energy in the cavity so it does not resonate.
Foam squares glued to a wall do none of that. They change how a room sounds inside, which is a different problem than keeping noise from crossing into the next room. If a neighbor's television is coming through, you need mass and decoupling, not egg-crate panels.
The rating you will see on a listed assembly is STC, sound transmission class. A standard 2x4 wall with insulation and single drywall lands in the mid 30s. Adding a second layer of board with a damping compound, or hanging the board on isolation clips and hat channel, moves that assembly into the 50s. Low-frequency noise like bass and footfall is the hardest to stop and needs decoupling more than anything else.
Assemblies We Build
We build the detail the way the manufacturer publishes it, because acoustic performance is unforgiving. One rigid screw through a resilient channel into the stud behind it short-circuits the whole wall.
-
Resilient channel — Steel channel screwed across framing so the drywall floats off the studs. Cheap and effective when installed with the right screw length and no bridging at the perimeter.
-
Sound isolation clips and hat channel — Rubber-isolated clips carrying 7/8 inch hat channel. The best performing decoupled ceiling we install, and the usual answer for footfall noise from the floor above.
-
Mineral wool cavity fill — ROCKWOOL batts friction-fit full depth to kill cavity resonance, which also adds fire performance in rated walls.
-
Double drywall with damping — Two layers of 5/8 inch board with a viscoelastic compound between them, seams offset so nothing lines up.
-
Acoustic sealant — A continuous bead at the floor track, ceiling, outlets and penetrations. Air gaps leak sound, and a 1 percent open area can undo half the assembly.
Where It Pays Off
Party walls in townhomes and duplexes are the most common request we get, and they are almost always solvable during a remodel because the framing is already open. Builders working on multi-unit residential construction bring us in early so the demising walls are detailed correctly before inspection instead of after a complaint.
Home theaters and media rooms in a basement finishing project get the full treatment: decoupled ceiling, insulated joist bays, solid-core door and sealed penetrations. Medical offices and law offices need speech privacy, which means the wall has to run tight to the deck rather than stopping at the ceiling grid, and duct runs need to be lined or offset so they do not carry conversation between exam rooms.
Because we also handle insulation installation, drywall installation and metal stud framing, one crew owns the whole assembly. Nobody hangs board over a clip system incorrectly and nobody has to guess what the acoustic detail was supposed to be.
The Valcast Difference
Why Contractors and Homeowners Call Us Back
Specialized Trades, One Contract
Experienced crews specializing in insulation, framing, drywall, taping, and painting are coordinated and managed by Valcast under one contract and one point of contact. This keeps scheduling, communication, and quality control consistent throughout our scope.
Commercial Standards on Every Job
The same tolerances, fastening schedules and finish levels we hold on commercial build-outs get used on basements and custom homes too.
Built to Pass Inspection
Rated assemblies are built to the listed design and firestopped properly, and we keep the documentation inspectors ask for.
Clean, Contained Work Areas
Dust control, floor protection and daily cleanup are part of the job, not an add-on you have to ask for.
Schedules We Actually Hold
Crews are sized to the job so taping starts when the board is done and your other trades are not left waiting.
Straight Answers on Pricing
Written scopes spell out board type, finish level and what is excluded, so the number you approve is the number you pay.
Good Questions
Frequently Asked Questions
Quiet Rooms, Built Right
We install soundproofing for homeowners, builders and property managers in Noblesville, Carmel, Westfield, Fishers and Zionsville, from a single shared bedroom wall to a full floor of offices.
Valcast Construction USA Inc. will walk the space, identify the flanking paths and price the assembly in writing. Call or text (463) 777-2799 or request an estimate.
