For projects in Bulgaria
HVAC, plant and machine noise control in Bulgaria
Noise with a source. Almost every honest fix is at the machine, the duct or the plant room, and almost nothing useful happens by lining the far wall of the occupied space. District heating and split units, with condensers on facades and in courtyards.
- At source
- Enclosure, barrier or anti vibration mounts at the machine.
- In the path
- Duct lining, attenuators and lagging on the first run out of the plant.
- At the receiver
- Only after the first two, and only for what is left.
- Quote
- From a plan and a section, within 48 hours
01 / The product
What you are buying, and what it fixes in Bulgaria
Noise with a source. Almost every honest fix is at the machine, the duct or the plant room, and almost nothing useful happens by lining the far wall of the occupied space.
District heating and split units, with condensers on facades and in courtyards.
Work reaching us from Bulgaria is mostly coastal and ski resorts, offices and service centres, panel block housing, schools, hospitals.
- Two seasons, two deadlines Coastal work finishes before summer and mountain work before winter. Real dates matter more than a marginally better price.
- Panel block housing Prefabricated concrete blocks pass speech and footfall between flats through thin, well connected elements. Surface treatment does nothing.
- Service centre floors Large rooms full of people on calls, where speech privacy rather than echo is the actual problem.
- At source Enclosure, barrier or anti vibration mounts at the machine.
Full specification
Thickness, density, NRC by frequency, fire class, standard sizes and build-up detail for HVAC and plant noise control are on the main product page. This page covers what that means for a project in Bulgaria.
02 / The build-up
What goes where, from the structure in
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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 Bulgaria, district heating and split units, with condensers on facades and in courtyards.
Floating floor. Resilient layer and deck, to break impact energy before it reaches the structure.
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Layer 2
Wood wool acoustic panels
Wood fibre bound into a rigid board with an open texture. In Bulgaria, church buildings and civic halls are stone volumes with long decay times.
With a porous backing. Board over mineral backing where the room needs more than the board alone gives.
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Layer 3
Acoustic foam and BassBloc
Open cell foam shapes for high frequency control, and BassBloc, a high density absorber built for the low mid range where ordinary foam does nothing. In Bulgaria, school buildings are hard surfaced with long corridors and gymnasiums serving as halls.
Behind a fabric frame. Where the room has to look finished, absorber inside a frame rather than foam on show.
For a Bulgaria practice, the useful thing is a detail you can put in a drawing set, not a brochure. See how we support architects.
03 / In this market
What we see driving Bulgaria briefs
- Two seasons, two deadlines
Coastal work finishes before summer and mountain work before winter. Real dates matter more than a marginally better price.
- Panel block housing
Prefabricated concrete blocks pass speech and footfall between flats through thin, well connected elements. Surface treatment does nothing.
- Service centre floors
Large rooms full of people on calls, where speech privacy rather than echo is the actual problem.
- Black Sea ports, then road
Varna and Burgas both serve the country well. We quote the sea leg and the inland leg separately.
- Plant and HVAC
District heating and split units, with condensers on facades and in courtyards.
04 / Room by room
Space by space, for Bulgaria briefs
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At source
Enclosure, barrier or anti vibration mounts at the machine. Coastal work finishes before summer and mountain work before winter. Real dates matter more than a marginally better price.
- Soundproofing materials, 2100 kg per cubic metre. 2.5 mm STC 30 at 5.25 kg per sq m, 4 mm STC 34 at 8.4, 6 mm at 12.6
- Wood wool acoustic panels, 20 mm
- Acoustic foam and BassBloc, 100 kg per cubic metre
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In the path
Duct lining, attenuators and lagging on the first run out of the plant. Prefabricated concrete blocks pass speech and footfall between flats through thin, well connected elements. Surface treatment does nothing.
- Soundproofing materials, 1800 x 900 x 20 mm, 100 kg per cubic metre, NRC 0.85
- Wood wool acoustic panels, 400 kg per cubic metre
- Acoustic foam and BassBloc, 100 to 500 Hz
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At the receiver
Only after the first two, and only for what is left. Large rooms full of people on calls, where speech privacy rather than echo is the actual problem.
- Soundproofing materials, Mass, then decoupling, then cavity absorption, then sealing
- Wood wool acoustic panels, 0.30
- Acoustic foam and BassBloc, 0.85
Designers get colour, pattern and CNC options with the absorption figure attached to each. See how we work with interior designers.
04 / Climate
Why the climate in Bulgaria changes the material, not the target
Bulgaria is cold winters and warm summers, with a wide annual temperature range, and that narrows the material list before acoustics is discussed.
A wide annual swing stresses adhesive fixings and moves timber. Mechanical fixing beats adhesive alone, and PET felt is stable across the range.
The failure we design against here is adhesive failure and timber movement across the annual swing.
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
Where this kind of project usually fails
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Absorption on the office wall for a plant room problem
Enclose the machine, break the vibration path, then deal with what is left. Doing it in the other order costs more and achieves less.
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Lagging a duct that is carrying the noise as breakout from the fan
Plant noise treated as a room problem is the most reliable way to spend a budget and change nothing anyone can hear.
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Ignoring structure borne vibration through the mounts
This is the one that comes back as a second fit-out rather than a snag.
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Treating it as a generic Bulgaria job
Coastal work finishes before summer and mountain work before winter. Real dates matter more than a marginally better price.
05 / Route to site
What the route into Bulgaria actually looks like
| Ships from | Palwal, Haryana, India |
|---|---|
| Arrives at | Varna or Burgas, then road inland |
| Dispatch | 4 to 7 working days |
| Freight | Sea via Varna or Burgas |
| Support | Drawings, build-ups, BOQ and material that arrives complete |
Standard items dispatch in 4 to 7 working days. Grooved panels and custom colours take longer, and we say so before you order, not after.
Sea freight into Varna or Burgas, then road inland. Air freight for samples and urgent quantities.
Questions from Bulgaria projects
What makes HVAC, plant and machine noise control different in Bulgaria?
District heating and split units, with condensers on facades and in courtyards. Coastal work finishes before summer and mountain work before winter. Real dates matter more than a marginally better price.
Where should the budget go first on a Bulgaria project?
At source. Enclosure, barrier or anti vibration mounts at the machine. In the path. Duct lining, attenuators and lagging on the first run out of the plant.
Do you have an office or installation team in Bulgaria?
No. We manufacture in India and supply into Bulgaria. 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 Bulgaria site?
ships from: Palwal, Haryana, India, arrives at: Varna or Burgas, then road inland, dispatch: 4 to 7 working days. Standard items dispatch in 4 to 7 working days. Grooved panels and custom colours take longer, and we say so before you order, not after.
What goes wrong most often on this kind of project?
Absorption on the office wall for a plant room problem. Lagging a duct that is carrying the noise as breakout from the fan.
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
Send a plan and a section, get a real build-up
Send what you have. We will give you a layer by layer build-up, a bill of quantities and a date material lands, and we will flag anything in the brief that will not achieve what you want.