Insulating the engine compartment of a boat or yacht

Engine noise can be quite disruptive in boats and yachts. That’s why it’s important to properly insulate all walls and hatches, so that the sound stays in the engine room or machinery space. Sealing gaps and openings also prevents sound from spreading to other parts of the boat.

Isolating the engine compartment

Tip: Place a lamp in the engine compartment and close the hatch in the dark. Do you see any light shining through? Then you are dealing with a sound leak.

Once all walls and hatches are properly insulated, it is important to line the engine compartment with absorbent foam. An engine compartment is often finished with hard surfaces, causing sound to easily reflect off these surfaces. This increases the noise level in the space. By applying sound-absorbing foam, you prevent these reflections and reduce the noise in the area.

Cover large surfaces as much as possible with absorbent foam, especially the ceiling and walls, which are ideal for this. The more absorbent material you place around the engine, the better the sound will be dampened. We recommend EASYfoam PU or FireSeal HR, as these foams have a moisture and oil-repellent top layer. If you need extra durability, choose FireSeal HR. This foam also has a white top layer, which makes for a brighter engine compartment.

Engine compartment insulation

In the case of noise disturbance in the engine compartment, usually made of lightweight materials such as wood, plywood or plastic, it is wise to use EASYmass sound insulating panels. These panels add extra weight and improve sound dampening.

NOTE: Make sure that the panels are tightly fitted together, as any gap creates a sound leak and reduces the effectiveness of the insulation. Do you want more information about insulating the engine box? Then click here!