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Reducing engine room noise
- Thread starter Wingspar
- Start date
I lined my engine room with acoustic ceiling tile from the home store. Inexpensive and it will NOT burn (I checked). It does a good job on reducing the high-frequency clatter but not much on the low-frequency rumbles.
Soundown.com and I think BoatFix sells it. It come in various thicknesses, can be applied with a combination of 3M adhesive and aluminum pins that can be epoxied to the fiberglass. Then use their silver/aluminum tape to dress and protect the edges.
It is pretty easy and much cheaper to make your own. Simply purchase urethane (nonflammable,heat resistant) foam about 1 inch thick and cover it (adhesive) with cheap, non-flammable tiles (floor), the heavier the better. The tile should face the engine room.
This acoustical treatment decouples the engine noise from the compartment walls.
This acoustical treatment decouples the engine noise from the compartment walls.
quote:
Originally posted by MIke F
It is pretty easy and much cheaper to make your own. Simply purchase urethane (nonflammable,heat resistant) foam about 1 inch thick and cover it (adhesive) with cheap, non-flammable tiles (floor), the heavier the better. The tile should face the engine room.
This acoustical treatment decouples the engine noise from the compartment walls.
I'm confused. Do you have a pix of this process?
TIA
- Joined
- Jun 13, 2007
- RO Number
- 26785
- Messages
- 234
I purchased and installed the thickest material available as a kit.
Had to use fasteners to hold to the underside and spray adhesive.
I taped all the edges with foil tape.
Made a huge difference in the engine noise.
Leftover pieces went around the A/C unit.
Well worth the effort
Just my 2 cents.
Had to use fasteners to hold to the underside and spray adhesive.
I taped all the edges with foil tape.
Made a huge difference in the engine noise.
Leftover pieces went around the A/C unit.
Well worth the effort
Just my 2 cents.
High frequency noise can be reduced with foams. Low frequency noise requires a barrier layer in the foam. Low freq noise requires mass to be attentuated so that is where the barrier layer comes in. If you really want to reduce engine noise buy the foam/barrier composite material. It will have many times more effect than foam alone.
there are different sound insulation products sold. the key to using them is to treat the engine room with them like it is holding a liquid. all surfaces must be covered and leaks sealed. the idea is not so much to absorb the sound but to contain it in the engine room. its not an easy retrofit to do properly in most cases. if yours is a daunting application and you are serious about it, get a price from a contractor that does this work, you'll probably agree after the work is done if you tackle it yourself that its probably worth hiring a pro.