Sound Insulation
Stopping sound moving from one space to another — through the wall, under the door, around the window and up through the slab.
Three things stop sound. Not one.
Mass resists it. Decoupling breaks the path it travels along. Absorption in the cavity soaks up what is left. Get one of the three right and you will be disappointed. Get all three right, in the proportion the frequency demands, and the room goes quiet.
Which proportion is right changes with every space. Low-frequency noise — a generator, a subwoofer, a truck — needs mass and a wide cavity. Speech needs sealing and detailing. That is why the measurement comes first.
Systems we install
- Double-leaf board partitions with stone wool infill
- Mass loaded vinyl barrier layers where mass has to be added without thickness
- Resilient channel and isolation clip decoupling
- Acoustic underlays and fully floating floor build-ups
- Ceiling systems hung on isolation hangers rather than fixed hard to the slab
- Acoustic doors, compression seals, drop seals and acoustic glazing
- Sealing for pipes, conduits, ducts and socket boxes — the usual cause of a missed target
The honest part
Treating three walls out of four does not give you three quarters of the result. Sound finds the weakest path and uses it. If the budget only reaches part of the room, we will tell you what it will and will not achieve before you spend it — and sometimes the right answer is to wait and do it once.
| Standard partition, as built | STC 35–40 |
| Enhanced partition | STC 45–52 |
| High-performance partition | STC 55–65+ |
| Floor impact isolation | IIC 50–65 |
| Façade / window reduction | 28–45 dB |
Typical situations.
Party walls and floors in apartments and villas.
Boardrooms, HR rooms, consulting rooms — anywhere speech should stay in.
Inter-room partitions and corridor doors on live renovations.
Road, railway and airport noise through the façade and the glazing.
Lift shafts, pump rooms, chillers and generator rooms next to occupied space.
Clinics and consulting rooms with a duty of confidentiality.
Asked before you ask.
What is the difference between acoustic treatment and soundproofing?
Treatment changes how a room sounds to the people inside it — echo, flutter, how long sound hangs in the air. Soundproofing stops sound moving between one space and another. Foam panels on a wall do the first and almost nothing for the second, which is the single most common and most expensive misunderstanding we are called in to correct.
Most real projects need both: insulation to contain the noise, treatment to make the room sound right once it is quiet.
How much does soundproofing cost in India?
It depends on three things: how much reduction you need, how big the surface is, and whether the building is finished or still open. The same 12 dB improvement costs very differently on a bare stud wall and on a finished bedroom with a marble floor.
As a rough order of magnitude, a single residential room treated for insulation typically starts around ₹80,000, and a dedicated home theatre acoustic build usually falls between ₹3–8 lakh. AHU and DG enclosures are priced after measurement, because the target is set by law and not by taste. We give an itemised proposal, not a lump sum.
What do STC, IIC, NC and RT60 actually mean?
STC is how well a wall, floor or ceiling blocks airborne sound — speech, TV, traffic. IIC is the same idea for impact: footsteps, a dropped chair. NC describes how quiet a finished room is when nothing is happening in it, which is what makes a cinema feel expensive. RT60 is how long sound takes to die away inside the room.
A wall can have a high STC and the room can still sound wrong. They are different numbers, solved by different work, and a proposal that only mentions one of them is incomplete.
Can you work in a building that is already occupied?
Yes, and most of our commercial work is exactly that. Plant rooms, DG yards and party walls are normally dealt with while the building keeps running — sequenced around working hours, with dust control and access agreed in advance. Tell us the constraint at audit stage and it goes into the programme rather than becoming a surprise later.
Get the number first.
We measure what is coming through today, and quote against the improvement — not against a square-foot rate.
- We call you back within one working day to understand the problem.
- We visit and measure — baseline dB levels and frequency profile, at no charge.
- You get a written proposal with performance targets, materials and costs, itemised.
Hyderabad, Telangana – 500033