Soundproofing insulation that actually quiets the room.
Soundproofing isn't just one product — it is an assembly. Mineral wool in the cavity, decoupled drywall, sealed gaps, and the right mass on each layer. We design and install acoustic walls, ceilings, and floors for home offices, music rooms, ADUs, and shared bedrooms.
What's included in this service?
- Mineral wool acoustic batts in stud and joist cavities
- Dense-pack cellulose for retrofit walls
- Resilient channel and double drywall design (when contractor is hanging board)
- Sealing of penetrations with acoustic caulk
- Door gaskets and threshold seals
- STC target review for the assembly
When do you need this service?
- Home office on a busy street
- Music or recording room in the house
- Shared bedroom walls in an ADU build
- Bedroom under a noisy bonus room
- Theater or media room build
What do homeowners ask about Soundproofing?
What STC rating should I aim for?
Code minimum for shared walls is STC 50. STC 55 starts to feel quiet between rooms; STC 60 is what you want for a recording space. We design to a target STC, not just to a product. Mineral wool gets you maybe 4 to 6 points; the rest is mass, decoupling, and sealing.
Will mineral wool alone soundproof my office?
It helps but it isn't the whole answer. Most noise comes through gaps, doors, and flanking paths. Plan on sealing penetrations, gasketing the door, and possibly adding a second layer of drywall with green glue. We design the whole assembly.
Can you retrofit a finished wall?
We can dense-pack cellulose into a closed wall for some sound improvement, but the bigger gains come from re-rocking with a damping compound layer. We will tell you what level of work matches your goal.
Where do we offer Soundproofing in San Diego County?
We provide soundproofing in every city and community in San Diego County. Pick your city for local climate notes and service specifics.
See soundproofing in all 48 cities
Homeowners who hired us for this
We had R-13 batts from 1979 that had settled to nothing. Crew air-sealed top plates first, then blew cellulose to R-49. Upstairs bedrooms feel different now — the AC actually keeps up on hot afternoons.
Got three quotes. Thermal Pro was the only one who recommended air-sealing before insulation and pushed for the radiant barrier given the East County heat. Bill dropped 18 percent in the first August. Worth every dollar.
Our vaulted ceiling was the hottest room in the house. Closed-cell foam at the roof deck completely changed the room. Crew masked everything carefully, came back to check the cure, walked us through the reoccupancy timeline. Professional all the way.
Need soundproofing in San Diego County?
Call for a free quote. Most work scheduled within the week.