Home > San Francisco > Home theatre soundproofing and acoustics
For projects in San Francisco
Home theatre soundproofing and acoustics in San Francisco
Serious equipment in a room with no isolation plan. The complaint is almost never the speakers. It is bass leaving the room and an untreated box making the system sound worse than it is. American homes are timber frame with gypsum board on both faces, so a party wall or a basement ceiling has almost no mass. Adding a second leaf with a limp membrane between does more than any amount of surface treatment.
- Containment
- Bass through the wall, floor and door. Mass and decoupling, with the door usually the weakest point.
- Low frequency inside
- Corner absorption with depth, before any surface treatment.
- Reflections
- Side wall and ceiling first reflection points at the seating position.
- Quote
- From a plan and a section, within 48 hours
01 / The product
What this material is and where it earns its place in San Francisco
Serious equipment in a room with no isolation plan. The complaint is almost never the speakers. It is bass leaving the room and an untreated box making the system sound worse than it is.
American homes are timber frame with gypsum board on both faces, so a party wall or a basement ceiling has almost no mass. Adding a second leaf with a limp membrane between does more than any amount of surface treatment.
Work reaching us from San Francisco is mostly victorian conversions, tech offices, apartments, studios, restaurants, clinics.
- Timber Victorians Light framed, over a century old, and divided into flats. Low frequency passes easily and footfall travels straight down.
- Depth costs real money At local rates a wall growing into the room is a significant number. A dense thin membrane usually beats a thicker framed build-up on total cost.
- Designed to move Seismic detailing requires junctions that stay flexible, so the acoustic layer must not stiffen across them.
- Containment Bass through the wall, floor and door. Mass and decoupling, with the door usually the weakest point.
Full specification
Thickness, density, NRC by frequency, fire class, standard sizes and build-up detail for home theatre soundproofing are on the main product page. This page covers what that means for a project in San Francisco.
02 / The build-up
How the layers stack, from the structure inwards
-
Layer 1
Soundproofing materials
The blocking side of the range taken together: mass loaded vinyl, resilient layers, cavity absorption and the build-ups they belong in. In San Francisco, packaged rooftop units and ducted forced air are standard, so noise arrives through the duct rather than through the wall. Lining the first three metres of duct and treating the return path is usually the whole job.
Resilient bar. Where a full independent leaf will not fit. Effective, and very easy to short circuit with one wrong screw.
-
Layer 2
Soundproof curtains
A layered curtain with a mass loaded vinyl core, used where an opening has to stay an opening. In San Francisco, churches, school gyms and multipurpose halls double as performance spaces, which means a room designed for neither speech nor music has to carry both.
Track with a seal. Ceiling track plus a floor seal or drape, so the perimeter is closed when it is drawn.
-
Layer 3
Acoustic carpet and rugs
A tile carpet with a dense polyester face on a felt backing. In San Francisco, public school buildings run long corridors with hard floors and lay-in tile ceilings that were chosen for cost, not for speech. Classroom reverberation and corridor spill are the two complaints, and both respond to ceiling area rather than wall panels.
Zoned. Carpet in the circulation and meeting zones, hard floor elsewhere, so the treatment sits where the noise is made.
Architects working in San Francisco usually need the build-up before the product. We will draw the section and mark what does the work. See how we support architects.
03 / In this market
What we see driving San Francisco briefs
- Timber Victorians
Light framed, over a century old, and divided into flats. Low frequency passes easily and footfall travels straight down.
- Depth costs real money
At local rates a wall growing into the room is a significant number. A dense thin membrane usually beats a thicker framed build-up on total cost.
- Designed to move
Seismic detailing requires junctions that stay flexible, so the acoustic layer must not stiffen across them.
- Oakland is close
A short road leg after the port keeps landed cost and timing predictable.
- The housing stock
American homes are timber frame with gypsum board on both faces, so a party wall or a basement ceiling has almost no mass. Adding a second leaf with a limp membrane between does more than any amount of surface treatment.
04 / Room by room
Where the money goes on a San Francisco project
-
Containment
Bass through the wall, floor and door. Mass and decoupling, with the door usually the weakest point. Light framed, over a century old, and divided into flats. Low frequency passes easily and footfall travels straight down.
- SoundBlanket mass loaded vinyl, 2100 kg per cubic metre
- Soundproofing materials, 1800 x 900 x 20 mm, 100 kg per cubic metre, NRC 0.85
- Soundproof curtains, 5.5 kg per sq m
-
Low frequency inside
Corner absorption with depth, before any surface treatment. At local rates a wall growing into the room is a significant number. A dense thin membrane usually beats a thicker framed build-up on total cost.
- SoundBlanket mass loaded vinyl, STC 30, 5.25 kg per sq m
- Soundproofing materials, Mass, then decoupling, then cavity absorption, then sealing
- Soundproof curtains, Up to 30 dB
-
Reflections
Side wall and ceiling first reflection points at the seating position. Seismic detailing requires junctions that stay flexible, so the acoustic layer must not stiffen across them.
- SoundBlanket mass loaded vinyl, STC 34, 8.4 kg per sq m
- Soundproofing materials, ASTM E90 for the barrier, ASTM C423 for the absorber
- Soundproof curtains, 30
Interior designers tend to arrive with the look already decided. We will tell you which finish gets there without losing the acoustics. See how we work with interior designers.
04 / Climate and durability
Durability in San Francisco, before acoustics is discussed
San Francisco is mild summers and cold, wet winters, and that narrows the material list before acoustics is discussed.
Cold external walls and long heating seasons make condensation behind a lining the thing to design out. PET felt is unaffected by damp air.
The failure we design against here is condensation and cold bridging behind new linings.
Consultants get the raw data, not a sales sheet. That is the whole of our side of the job, and it is set out under working with acoustic consultants.
06 / Before you buy
What we watch go wrong on jobs like this
-
Foam on the walls as a soundproofing measure
Small on the drawing, expensive on site, and almost always found after handover.
-
A standard door on a room built to hold bass
A gap undoes the partition it sits in. Sealing is the cheapest line on the quote and the first one to get cut.
-
Treating before the room is sealed
A 6 mm undercut under a door leaves a hole the size of a brick. The wall around it is then decorative.
-
Treating it as a generic San Francisco job
Light framed, over a century old, and divided into flats. Low frequency passes easily and footfall travels straight down.
05 / Supply
Getting it to San Francisco, with real dates
| Ships from | Palwal, Haryana, India |
|---|---|
| Arrives at | Oakland, then a short road run across the bay |
| Dispatch | 4 to 7 working days |
| Freight | Sea via Oakland |
| Support | Drawings, build-ups, BOQ and material that arrives complete |
Standard items dispatch in 4 to 7 working days. The sea leg from India is long, so plan the full door to door window into the programme. We give real dates, not optimistic ones.
Sea freight into Oakland, then a short road run to site. Air freight for samples and urgent quantities.
Questions from San Francisco projects
What makes home theatre soundproofing and acoustics different in San Francisco?
American homes are timber frame with gypsum board on both faces, so a party wall or a basement ceiling has almost no mass. Adding a second leaf with a limp membrane between does more than any amount of surface treatment. Light framed, over a century old, and divided into flats. Low frequency passes easily and footfall travels straight down.
Where should the budget go first on a San Francisco project?
Containment. Bass through the wall, floor and door. Mass and decoupling, with the door usually the weakest point. Low frequency inside. Corner absorption with depth, before any surface treatment.
Do you have an office or installation team in San Francisco?
No. We manufacture in India and supply into San Francisco. We give you drawings, build-ups, a BOQ and material that arrives complete, and we will tell you plainly when a job needs a local contractor we cannot be.
How does material get to a San Francisco site?
ships from: Palwal, Haryana, India, arrives at: Oakland, then a short road run across the bay, dispatch: 4 to 7 working days. Standard items dispatch in 4 to 7 working days. The sea leg from India is long, so plan the full door to door window into the programme. We give real dates, not optimistic ones.
What goes wrong most often on this kind of project?
Foam on the walls as a soundproofing measure. A standard door on a room built to hold bass.
What do you need from us to quote?
A plan, a section through the critical partition or ceiling, and what the room is for. From that we can give a build-up and a BOQ rather than a price per square foot.
Next step
Tell us the room, we will tell you the build-up
A plan and a section is enough. We will come back with a build-up, a BOQ and a delivered date, and we will say so if what you are asking for will not work.