Sound Deadening
Fatmat is 25sqft for $50 I think. It works fine. Don't buy Home Depot peel and stick.
CCF on ebay.. $14 shipped per yard x 54" I think. Great deal.
MLV from Home Depot (DB3 online only).. $30 for 32sqft I think. About 0.75lb/sqft. It is MUCH cheaper than anything sold for automotive use (3x cheaper!). Everyone gripes that tape won't stick to it and other brands are 1lb/sqft, so they won't use it. I found that Tyvek sheathing tape works great, so IMO this MLV is a fantastic deal.
Test Run
I did a test by playing music on my cellphone.. then covering it with fatmat.. then CCF, then MLV, then CCF+MLV.
Fatmat - Small difference, but I only use for vibration so I don't do full coverage.
CCF - No difference
1 Layer of MLV - Good sound reduction. Satisfactory for me.
2 layers of MLV - AMAZING, I almost couldn't hear the music.. but I didn't want to use that much.
I noticed that the sound leaks very easily. Basically, cut your holes as small as possible, and try not to have seams. Luckily the doors can be one piece.
Fatmat+MLV+CCF for the doors
For each door I did:
3 sqft fatmat
6 sqft CCF + MLV ( full coverage)
It definitely helped.. but it's just the doors.. so now I hear other noise sources. From just the doors:
- Windows are much quieter (who cares
)
- Driving next to a barrier is much quieter (much less high frequency tire noise)
But.. my tire noise is still loud in the foot wells. And my exhaust is super loud.
I made some progress cutting pieces for the trunk today.. but I have too many projects going so I couldn't finish.
Eventually I'll do the footwells, rear quarters, rear fenders, and under the seats. Should be about $200 max for everything. Some people are paying upwards of $1000 to do the whole car, that's just crazy.