engine room sound insulation

[Pete G]

Any recommendations on replacement foam?  As part of my engine room refresh, I removed the originals - the PO ran the engine without a dipstick for a while.  :-\ 

I see some spendy foam panels at West Marine, wondering if there's a Home Depot option.

https://www.westmarine.com/west-marine-acoustical-foam-P006_180_006_004.html?queryID=ed9cfc140bde9815245ec09b9d2b1136&objectID=216866&indexName=production_na01_westmarine_demandware_net__WestMarine__products__en_US

[Ron Hill]

Pete : Look at Defender I was very pleased with their engine insulation!!   

A thought

[Noah]

Search our website using term "Soundown".
Defender sells "Soundown" which requires spray glue to install. West Marine's product is a similar make-up but it is peel and stick. Both come in a variety of thicknesses. Soundown comes in kits so sizing/measuring your space requirement is important. You may need 1-1/2 kits. Or a couple different thicknesses depending whether you are covering engine room doors , etc.  I believe you can buy the West Marine product in individual squares(?). Both work.

[Ron Hill]

Guys : I used screws with washers to in stall mine. Also I installed the 1 1/4 thick!!
A thought

[Noah]

Whether you use the spray glue or sticky back insulation product, you should ALSO USE screws and washers. Also, I disagree with Ron regarding 1-1/4 inch thick. You will have difficulty fitting that thick of insulation in several locations inside the box—particularly on the removable stairs and opening door next to the alternator.

[Ron Hill]

Guys : I had to "work at it", but I got the 1 1/4" because it gives greater deadening of the sound!!  BTW, I only used screws & washers!!

A thought

[csimmerling]

Need to this this myself since the PO removed it all. Can anyone tell me which surfaces other than the doors and steps need it?

[scgunner]

I did the same thing as Ron did, I used 1-1/4" because nobody had 1-1/2". Yes there were some tight spots but I don't recall installation being particularly difficult. Also like Ron I used screws and washers which is how the original was installed. I don't recall the use of any adhesive on the original install which worked for me since I've never had much luck with glue in engine compartments.

[Pete G]

I ended up biting the bullet and went with the West Marine system.