Soundown Peace and Quiet Kits effectively quiet and dampen noise created by engines, generators, and other equipment. Available for diesel, inboard and outboard engines, kits feature insulation sheets composed of a layer of mass loaded vinyl, sandwiched between two layers of polyether fire retardant foam, and then covered by a thin white vapor barrier.
Soundown Peace & Quiet kits are designed specifically to reduce sound from marine machinery that may produce significant bass and midrange frequencies such as engines, generators, and pumps.
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Kits include 10 sets of fasteners, Mylar seam tape and Adhesive spray
Mylar Faced Vinyl Foam Sheet Thickness
1lb Barrier (Y/N)
Includes Fastener kit (Y/N)
Outboarder 12 Kit
12 sq ft, 1/2" thick
Boaters Basic 12 Kit
12 sq ft, 1" thick
I/O Basic 24 Kit
24 sq ft, 1" thick
Yachtsman Deluxe 12 Kit
12 sq ft, 1" thick
Yachtsman Deluxe 24 Kit
24 sq ft, 1" thick
does the material come in panel or rolls? What are the length and width dimensions?How easy can it be cut? (the SDN-NFBKTA 1in material with barrier)
Bob from Babylon
It comes in a roll. 32" x 54". Relatively easy to cut with a razor knife.(plastic/lead foil sandwiched in foam.)*Sent:* Friday, April 27, 2018 3:06 PM*Subject:* Can you help a fellow shopper?
It came in a roll. I don't remember the dimensions, but I'm guessing width was 3'. I used a box cutter with new blade and a thick straight-edge when cutting. You need to cut through the thick plastic layer in the middle as well as not crumbling the foam. Take your time and make sure your cuts are smooth. I used it to dampen the sound from my inboard engine compartment by covering the underside of the engine room hatch. It really works!Randy Putnam
The material is rolled up and 24" X ?"To cut it I would recommend a steel ruler and a razor knife. I kneel on the ruler and make several cuts to get thru all of the layers. It's not hard to do but take some care and use a bit of elbow grease. Put a piece of plywood or similar underneath so you don't cut something you cherish.Best of luck,Rob Laird
It's one piece, usually folded in half. You can get different dimensions(rectangles) up to say 54" wide, certainly large enough to do large engineroom panels. My advice would be to get a minimum of 1" thick. This stuffis very heavy due to the hard rubber separating the two foam halves. I useone of those retractable razor blades you can pick up most anywhere for acouple of bucks and it does the job but you will have to make 2 or 3 passessometimes. Use a good straight edge to cut against everywhere you can forcleaner cuts. Get extra roll of the metalic finishing tape to wrap theedges. It gives a nice finish and keeps the top layer of foil fromseparating from the foam. This stuff really works, but only if you get itthick enough and get the type with the hard rubber inner layer. Foam onlyisn't half as good.
The sundown peace and quiet kit comes in two large rolls, and needs to be cut accordingly.
The material comes in rolls in a cardboard box, the 12' size is roughly 3'x4'. I have always used a good, sharp utility knife to cut these. The vinyl barrier makes it a little slow to cut but is very doable.
JD Tech Associate
what is the size (length and width) of the12 square foot sheet.
bob from Babylon
I think it was 4 x 3. It was in a roll. Worked really well under engine hatch of our inboard (Chrysler 318) Trojan F26
12 sq ft sections are roughly 3' x 4'
JD Tech Associate
How wide is the sheet? I'm covering a center console engine box, not yet built. Do I figure sq. feet of 4 sides and top of box seperately, then add together to get sq. ft. needed?
yescheck specs for sizes
I really can'y yell you anything. I have not used it yet. Looks good.
24 inches, which was the width of my engine box.
My engine box is not square. How flexible are the 1/2' panels and the 1" panels?
Panels are high density foam and come rolled on the box, so should be plenty flexible.
It is foam. It will compress. Outside corners and curves are easy to contour. Inside corners need to be done in 2 pieces, one butted up to another. The mylar film doesn't stretch but is flexible. Seal the pieces at joints with the mylar tape.
I didn't find them to be very flexible. My cabinet wasnot square but i was able to cut panels to fit and taped the places where they met
Material is easy to cut to fit. Adhesive will keep it down if you have round edges. I would suggest that you invest in extra fasteners if you anticipate unusual forms to cover. Taping edges is an important step to make the job look right. Good luck, hope this helps.
Thank u Jeffrey. It is great to hear the panels are flexible.
They are very flexible and not difficult to cut. It is slightly heavy so it is a must to use the mechanical hangers along with the spray adhesive. I made that mistake once and only used adhesive, had to redo my box within a year. I feel it is a great product and have it installed on my two inboard boats. Neither of my boxes are completely square and the fit looks good to me. if I ever do another one I am going to put more than the reccomended number of hangers and use the thickest material.Hope this helps
The panels are extremely flexible. Imagine a layer of plastic sponge with Renolds Wrap on one side. And, you can cut it, knotch it, and coax it into all kinds of places. If your engine box can be removed it helps. I used the one inch panels.
They can be bent quite easily, but it will be more difficult for the panels to stay in place. You will have to use the "nails" in the right places.
The panels can be cut to size and are very flexible; basically foam with an aluminum foil lining.Most engine boxes are not square, but have a slight curvature.This will work very well and is easy to install.
Phil, Tanks for the info. I feel much better now about my install project.
does sounddown come in 1 inch strips?
You ask id Sounddown comes in one inch strips. I do not know.
Comes in a rolled up sheet of different thicknesses. You can cut it into a strip(s) if you like with a razor knife.
I've never seen it that way, but the basic product is easily cut with a large pair of scissors. I've installed a lot of it on my boat, and that is all I have ever used to cut it.
1" thick sheets or just 1" wide strips? I don't think 1" wide strips would be very helpful. It is not designed to be installed or used like weather stripping. It should be applied like a blanket. A 1" wide strip could be cut from a sheet if needed to fill gaps or holes in exsisting sound proofing. Bear in mind that it isn't adhesive. It requires hardware and spray adhesive working together to hold it in place.
You can check the catalog or the Soundown website, but I do not believe so.It can be very easily cut with a razor knife.
can the adhesive spray be bought separately? What type is it? I am buying larger sheets of the composite for my engine room and installation kits and need adhesive.
The adhesive spray can be bought separately but they charge a hazardous material fee for shipping it. It appears to me that it's the same adhesive spray as the 3M heavy duty adhesive spray you can purchase at Home Depot or Lowe's for a lower price.I need more spray myself and that is what I plan on doing.
what is the difference with/without barrier, other than double the price?
I've used soundown materials on several boats, and honestly, I would not use soundproofing without the barrier, as it is the barrier that makes it work...look it up and you will see what I mean. Make sure the kit you are ordering has genuine Soundown materials, as I got the wrong one orginally and had to send back for the correct one, even though I had ordered the right kit.THe barrier converts the sound vibration to heat energy and the foam on both sides stop the transission of the reflected noise. Much much difference between foam and no foam. Go to the Soundown web site and it explains the physics of how it works.
Hi George,I don't remember which part is the barrier. Just let me tell you about the kit I bought. It has two layers of foam with a hard rubber sheet about 1/8 inch thick in the middle.There is a sheet of brilliant (like chrome) plastic sheet on the outside.The liner was marked "for diesel engines." Mine is gas. It quieted the sound some, enough that one friend noticed it. But it certainly was not a lot of quieting. Maybe 15%.Would I do it again? Yes. It is easy to install. I found a bread knife was best for cutting the stuff. Good luck,Phil
I didn't buy both so it is impossible for me to give you a helpful answer. I just thought the barrier would be more effective in deadening the sound compare to what I had. That proved to be true.
I used it to line a dog house covering my generator. I think it has made quite a noticeable difference in noise that reaches the cabin.
Sound down significantly reduce noise in my boat salon. Reduced heat as well.
Can anyone comment on the effectiveness of the outboard kit?
I replaced the foam insulation that had been installed when the boat was built in the early 80's. the sound reduction was dramatic and the engine smell was also reduced when the foam was removed. I used stainless screws and large washers along with the adhesive to install the panels. Make a pattern first to make best use of the sheet material.
looking to reduce the noise in my rhino side by side atv. will this kit work?
I installed the sound proofing in the engine box for my 52 hp diesel. I saw an appreciable reduction in engine noise.
Maybe.In the boat, the engine is enclosed in a fiberglass box; this kit lines the lid of the engine box.If the ATV does not have an engine box surrounding the motor, you would not have anything to attach this to.Is there an engine box of some type on the ATV?
I have this product in two of my inboard boats and it does work but I have found it must stay dry since it will absorb water and delaminate. I feel that it would not be suitable for your intended application. I wear disposable ear plugs under my helmet while I operate my toys, that has worked great for me!
Great insulation kit
They give you everything you need to make the job easier. Instructions easy to follow. Thank you
Palm Bay florida
Vendor could be more generous
The install takes care and patience. Second job I have done with the yachtsman kit. Should have learned my lesson but I had bought spare push pin connectors last time. Same deal, they instruct you how to mount and don't provide sufficient fittings to do the job as described. An extra dozen push pins w/ nuts costs $30! GOTTCHA!! Buyer beware
The foil tape in the kit is a bit flimsy, so I used Nashua Foil Tape
I used the sound barrier material on two of the engine hatches on my diesel motor yacht and found it easy to apply. It appears very durable and should last for years. I seems to cut down the noise of the engines quite a bit.
Sound down Peace and Quiet kit
I had a number of small pieces to do my project and before I finished putting the tape on all edges I ran out of tape. The tape did not seem to stick to the foam side of the material very well. I have used this product before and I don't remember having that problem the last time.
"Measure twice, cut (and apply) once"
Used the "basic kit" on another diesel engine box years ago. If going to all the trouble and time to install soundproofing, it is worth it to get the higher priced kit. Don't expect miracles for sound reduction, as much is transmitted through engine mounts to reverberate noise in the fiberglass "pan" and hull, but it does seem to help.
needs better fasteners spikes are too lo
Works well neat finish.
quality kit simple install
It quiets the noise really well.
Seems like there should be something thinner and pliable. In a tight spot this is not an easy install
Works as Advertised
I installed Sounddown on the engine hatch of a Yamaha SX230 Jet Boat. You couldn't have a conversation with the engine noise before, made a huge difference after the install. Highly recommend it, plus a number of high end manufacturers use the same stuff.