The thrill of a jet boat is unmatched quick acceleration, shallow-water access, and fun on lakes and rivers. But jet boats are also loud. The high-RPM engines and jet drives produce constant vibration, exhaust noise, and hull resonance, which can make family trips or long days on the water tiring. Adding marine sound deadening materials can transform a jet boat into a quieter & more comfortable ride.
Why Jet Boats Are So Noisy
- High-revving engines produce more constant noise than low-RPM prop boats.
- Jet pumps create vibration that transfers into the hull.
- Light fiberglass hulls resonate, amplifying sound inside the cockpit.
- Exhaust roar at the stern echoes back into the cabin.
Benefits for Jet Boat Owners
- Quieter cockpit: better conversations and less fatigue during long rides.
- More enjoyable for families: kids and passengers are more comfortable without constant engine roar.
- Improved value: quieter boats appeal to future buyers.
- Better music & entertainment: sound deadening improves audio clarity.
How do you sound deaden your Jet Boat?
Soundproofing your Jet Boat is simple. At B-Quiet you will find a product called B-Quiet Ultimate Sound Deadener which can be applied to on your Jet Boat and enhance your overall boating experience. By installing Ultimate underneath the doghouse of your Jet Boat as well as the engine compartment you will notice a dramatic difference.
For a complete boat engine insulation in your Jet Boat, the best thing to do is apply Ultimate on the engine cover. Forward bulk head, and under the seat storage and back seats. You can purchase Ultimate at B-Quiet in 12 or 50 sqt rolls. Ultimate comes in a self-adhesive sheet, that is easy to peel and stick to all metal surfaces on your Jet Boat
For added insultation, the B-Quiet team also advises Jet Boat owners to cover all joints with Ultimate to avoid additional air and water vibrations and add HLiner sheets to target airborne engine noise and thermal insulation.
Installation Tips
- Access the engine bay and bulkheads via hatches.
- Clean all surfaces thoroughly to remove oil and moisture.
- Apply Ultimate sheets first to control vibration and then Hliner.
- Seal overlaps to prevent moisture intrusion.
- Reinstall panels and test for noise reduction.
How Much Sound Deadening Material a Jet Boat Needs
Most jet boats require 100–140 sq ft of sound deadening material depending on size and how many areas you treat. Focus first on the engine bay, cockpit floor, and hull sides for the biggest difference.
Use our Sound Deadening Calculator to get an exact estimate for your boat.
Package Recommendation
For jet boat projects, the Marine Nautical Sound Deadening Package includes:
- A 50 sq ft roll of Ultimate Butyl Sound Deadener
- Three VComp sheets for barrier protection
- An application roller for easy install
This complete kit is designed to cover the engine bay, floor, and bulkheads, the main noise sources in a jet boat.
