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The Garage - Boat, Marine, & Watercraft Soundproofing

The Garage: Boat, Marine, Watercraft Sound Deadening Projects

Author: Sturgeon Christie

Last Updated: February 9, 2024

Read Time: 8 Minutes

The Garage: Boat, Marine, Watercraft Sound Deadening Projects

Author:

Sturgeon Christie

Last Updated:

February 9, 2024

Read Time:

8 Minutes

Author: Sturgeon Christie

Updated: Feb. 9, 2024

Read Time: 8 Minutes

Welcome aboard! We promise to try to keep our nautical commentary to a minimum and let these projects do the talking. But before we dive in, if you have a project you're planning on or you see these, and you say to yourself, "Man, I want that for my boat!" be sure to check out our article on marine sound insulation to learn how to soundproof a boat. No more wasting time. Crack open a beer, start your engines, and cast off!

Welcome aboard! We promise to try to keep our nautical commentary to a minimum and let these projects do the talking. But before we dive in, if you have a project you're planning on or you see these, and you say to yourself, "Man, I want that for my boat!" be sure to check out our article on marine sound insulation to learn how to soundproof a boat. No more wasting time. Crack open a beer, start your engines, and cast off!

Featured Build: 2001 Master Craft Pro Ski Boat

Mike's ski boat

This boat engine cover remodeling project was done by Mike and his son over the winter of 2016! Their goal was to remove the old factory insulation that was falling off and replace it with some new high-quality Amertican-made Second Skin sound and heat insulation. Check out these awesome before, during, and after pics submitted by Mike.

Master Craft Pro Ski Boat Soundproofing

Mike's 2001 Master Craft Pro Ski Boat

2001 Master Craft Pro Ski Boat Insulation

Let the dirty work begin. Scrapping out the old failing factory insulation to get back down to a good base starting point is key to long-lasting replacement.

Boat Engine Cover Soundproofing

It never hurts to spray on some primer before starting fresh.

Sound deadening boat engine cover

On goes the first layer of the Boat Engine Compartment Insulation Package, the Damplifier Pro.

Boat engine cover heat insulation

Next up, is layer 2, the sound and heat insulation layer. Heat Wave Pro was used on this boat for the second layer. Make sure to tape up any seams or edges with high-temperature foil tape.

Boat Sound and Heat Insulation

Mike and his son are all ready to hit the open water and enjoy their quiet and cool boat all summer long.

More Boat, Marine, and Water Craft Soundproofing Projects

2015 Master craft

Type of Project: Engine Cover Boat Soundproofing Kit

Products Used: 25 Sq Ft of Damplifier Pro Deadener

25 Sq Ft of Heat Wave Pro Jute Thermal Insulation

Accessories: Spray Adhesive (1 can), Wooden Roller, Foil Tape

Boat Hull Soundproofing Boat Hull Soundproofing

Bean marine fabrication CUSTOM 23'

Type of Project: Hull Coverage by Bean Marine Fabrication

Products Used: 80 Sq Ft of OverKill Pro Closed Cell Foam (Boat Hull)

Accessories: Spray Adhesive (4 cans)

1993 master craft prostar 205

This project was a few years in the making. Scott covered the entire boat doghouse with Damplifier Pro and then applied the Heat Wave Pro on top with foil tape on the seams and edges. This reduce his noise transfer into the boat area by a a good 8 dB, keeping him quiet and cool while driving around the lakes.

1993 Master Craft Boat Insulation

After years of use, it was time to get the engine cover replaced. Second Skin to the rescue.

Master Craft Engine Cover Soundproofing

First layer of the boat engine compartment kit is the Damplifier Pro. Used to kill vibrations and reduce heat transfer. Rolled on with a wooden roller to formn a solid bond.

Master Craft Boat Thermal Insulation

Follow that up with complete coverage of the Heat Wave Pro. Using the high temperature foil tape to seal the seams and edges.

Boat Engine Cover Doghouse Insulation Kit

After about 2 hours, Scott finished up his boat engine cover kit installation.

Bean Marine Boat Soundproofing Bean Marine Boat Soundproofing

Bean Marine Fabrication CUSTOM 20'

Type of Project: Hull Coverage and Engine Bay by Bean Marine Fabrication

Products Used: 100 Sq Ft of OverKill Pro Closed Cell Foam (Boat Hull and Engine Bay Walls)

Accessories: Spray Adhesive (4 cans)

2010 Sea Doo Boat Soundproofing

2010 Sea doo 210 Wake

Type of Project: Engine Cover

Products Used: 32 Sq Ft of Damplifier Pro Deadener

32 Sq Ft of Mega Block Hydrophobic Melamine Foam Insulation

Accessories: Wooden Roller, Foil Tape

2020 Yamaha jet boat

Adam covered the engine door with the Second Skin Dampener, then the Heat Wave Pro, then put the original foam back in (cause why not). Everywhere else inside the engine bay he used the Damplifier Pro. Adam also covered the fuel compartment door with the Damplifier Pro which was 9 sqft. It's much quieter than before at idle/sunset cruise speeds making it easier to talk. And quieter when accelerating and at plane speeds. So all around it was worth the investment. Adam really liked that Second Skin is a reputable commercial brand, is rated to hold up to high temps, made in America, will act as a fire retardant, AND the great customer service. dB changes below.

BEFORE - 02 mph - 61 db 05 mph 2300 RPM - 69 db 12 mph 4800 RPM - 83 db 20 mph 5300 RPM - 85 db 25 mph 5500 RPM - 93 db

AFTER - 02 mph - 59 db 05 mph 2300 RPM - 64 db 10 mph 4200 RPM - 78 db 20 mph 5100 RPM - 81 db 30 mph 5500 RPM - 83 db

Yamaha Jet Boat Soundproofing

Final look with the Second Skin Boat Kit along with the factory foam added back on.

Factory Soundproofing Yamaha

From the Yamaha factory they only add a small square of foam, doing almost nothing.

Yamaha Jet Boat Engine Hatch

Follow that up with complete coverage of the Heat Wave Pro. Using the high temperature foil tape to seal the seams and edges.

Yamaha Jet Boat Sound Deadening

After some removaland clean up work, Adam applied the first layer of sound deadening to the boat engine cover.

Yamaha Jet Boat Soundproofing

Damplifier Pro added to the fuel tank cover.

Yamaha Jet Boat Soundproofing

Side walls covered with Damplifier Pro.

Factory - Before the Second Skin Boat Kit

After - Second Skin Boat Insulation Kit

2021 Yamaha Jet Boat Soundproofing

2021 Yamaha Jet Boat

Type of Project: Engine Bay

Products Used: 24 Sq Ft of Damplifier Pro

24 Sq Ft of Mega Block

Accessories: Foil Tape, Butyl Tape

2008 Yamaha SX 23' Twin 4 Stroke Soundproofing

2008 Yamaha SX 23' Twin 4 Stroke

Type of Project: Engine Cover & Under Seats

Products Used: 54 Sq Ft of Damplifier Pro Deadener

50 Sq Ft of Mega Block Hydrophobic Melamine Foam Insulation

Accessories: Wooden Roller, Foil Tape

Boat Doghouse Insulation

Boat Doghouse

Type of Project: Engine Bay

Products Used: 12 Sq Ft of Damplifier Pro

12 Sq Ft of Heat Wave Pro

Accessories: Foil Tape

Yamaha Jet Boat Engine Cover Insulation

2010 Yamaha JET BOAT

Type of Project: Engine Cover & Seat Walls

Products Used: 44 Sq Ft of Damplifier Pro Deadener

44 Sq Ft of Mega Block Hydrophobic Melamine Foam Insulation

Accessories: Wooden Roller, Foil Tape

Boat Engine Kit Soundproofing

Large boat kit

Type of Project: Engine Bay

Products Used: 36 Sq Ft of Damplifier Pro

36 Sq Ft of Heat Wave pro

Accessories: Foil Tape, 2 Cans Spray Adhesive

Mastercraft Soundproofing Kits

1996 Mastercraft Maristar 200VRS

Type of Project: Engine Cover & Under Seats

Products Used: 40 Sq Ft of Damplifier Deadener

40 Sq Ft of Mega Block Hydrophobic Melamine Foam Insulation

Accessories: Wooden Roller, Foil Tape

Boat hatch cover

This boat project was completed by our long time Second Skin Singapore distributor Antonie. He used the Damplifier Pro and Luxury Liner Pro to line the cargo hatch covers of his boat to block sound and heat from coming up through the seats which sit on top of the hatch cover.

Boat hatch sound deadening

1st step, Damplifier Pro on the hatch cover.

Boat hatch soundproofing

Second layer of the hatch gets the Luxury Liner Pro to block out sound.

Cargo hatch boat sound blocking.

More of the cargo hatches covered with Luxury Liner Pro.

Cargo hatch soundproofing

More Luxury Liner Pro for the cargo hatches.

Final hatch covered with Luxury Liner Pro.

Yamaha Jet Ski Soundproofing

2009 yamaha fzr 1800 supercharged

Type of Project: Engine Cover

Products Used:10 Sq Ft of Damplifier Pro Deadener

10 Sq Ft of Mega Block Hydrophobic Melamine Foam Insulation

Accessories: Wooden Roller, Foil Tape

Kawasaki Jet Ski Engine Soundproofing

2012 Kawasaki ultra lx

Type of Project: Engine Cover

Products Used: 8 Sq Ft of Damplifier Pro Deadener

8 Sq Ft of Heat Wave Pro Jute Insulation

Accessories: Wooden Roller, Foil Tape, Spray Adhesive

Doghouse Soundproofing

Boat engine cover

Type of Project: Boat Doghouse Coverage

Products Used: 12 Sq Ft of Damplifier Pro Sound Deadener

12 Sq Ft of Mega Block Heat Shield

Accessories: Wooden Roller, Foil Tape

MasterCraft Boat Soundproofing

1996 Master Craft Prostar 190

Type of Project: Boat Doghouse Cover

Products Used: 12 Sq Ft of Damplifier Pro Sound Deadening 

Accessories: Wooden Roller

1988 Tiara 3300

Steve, all the way up in Canada used our premium boat engine cover insualtion kit to get his 1988 Tiara sounding quiet again after years of the factory insulation falling off.

1988 Tiara 3300 Boat Insulation

Bez, Amy, and the doggies ready to skin the bus with Second Skin!

Boat engine insulation repair

When you open up the hatch and see this...it's time for some new stuff!

Boat Cover Insulation

Factory heat shield and noise insulation is failing and falling off. Time for an upgrade.

Boat Engine Cover Repair

1st step, get the old stuff off and clean the surface well with denatured alcohol.

Sound Deadening Boat Engine Cover

1st layer of Second Skin to go on the cover is the Damplifier Pro, to kill vibration noise and stop heat transfer.

Soundproofing boat engine covers

2nd layer of the Boat Engine Cover Kit, Mega Block. To absorb the airborne noise and also to thermally insualte the engine cover. No more sound and heat coming up through here with the Second Skin treatment.

Boat Engine Compartment Insulation Kit . . . because we heard you loud and clear.

Your boat deserves the same love as these projects above. This kit has everything you'll need to quiet that engine so you can stop screaming, "I can't hear you." The reply is always inevitably, "What?" anyway. Skip the theatrics and treat you boat right. When you pull up to the dock and everyone notices just how quiet your boat is, you can relish in how simple it was to do and how good you looked doing it.

  • Boat Doghouse Kit: Damplifier Pro stops vibrational noise from the fiberglass housing. Heat Wave Pro brings the insulation and sound absorption to the table. This kit was designed for anyone with a doghouse engine compartment on their boat that is looking for some noticeable noise reduction.