Sound Proofing Prius

Looks nicely done. I'm assuming you've had some practice on other vehicles.

Do you have any idea of the weight this adds overall (all 4 doors)?

 

The weight is inconsequential - even if he did all 4 doors, the complete floor pan beneath the carpet and the firewall. I plan on doing this too so thanks, OP, for the video. BTW, should any maintenance be needed for power windows or PDLs, they will have to cut out your matting. I have used a cruder method to sound-deaden the doors, but it already makes huge difference. I want to do the Dynamat though, even if it is pricey. I also plan to pull the interiors out and carpeting to do Dynamat for complete floor pan. If you check, there's nothing between the carpet and the metal pan.

Earlier this spring, I sound-deadened all 4 wheel wells using foam rubber and rubberized undercoating. I'm convinced that did a lot to reduce cabin noise, but more is needed. I tried to upload the pictures but got an error on PC.

 

If you pull up the plastic runner between the right side kick panel and the center post between the front and rear doors, you will see the edge of the carpet and the metal floor pan directly beneath it. Prius also has a nice plastic underbody panel if you look under the car, but that does nothing to stop road and engine noise from transferring into the cabin. As you do all 4 doors in Dynamat, and if you decide to do the wheel wells as I did, you will really notice the road noise from the pan.

I've seen members here put the Dynamat just about everywhere under interior panels to cut back on the road noise. This is especially noticeable as you get about 60 mph on freeways. If you take a lot of road trips, this type of sound-deadening is worth it. I was finally able to upload my shots of the wheel well sound deadening foam (not an easy job). After the wheel well cover was reinstalled, I sprayed a can of rubberized undercoating on the entire surface.

 

khoakhoa

I am in San diego too, how long it took for you to do the floor? begin to end?? is it very hard? did you note any reduce the road noise at all, I did all 4 doors and the trunk and will do the back seat this weekend, I would like to do the floor too but too scary to remove the seats and center console.

V/r

Khoi Nguyen

 

Good luck with the rest of the floor pan. When I do my car's floor pan , I'm going to remove the interiors in phases. Like you mentioned, first the low-bridge console, main center console, front seats, gas cap release, mid-car columns which cover the seat belt retractors, the rear seat and finally extract the carpet. I will get pictures of it, but I'm waiting for cooler days which could be months off here. I plan to do Dynamat Extreme over the complete pan. Noise has a way of sneaking around so if you only do certain areas, other untreated areas can still transmit road noise. It's not a perfect science, but if I'm going thru the trouble, I want it as good as it can get.

The next phase will be under the HV battery (has to be done carefully) and then finally the rear hatch area. I'm ordering the Dynamat from Amazon.com as they seem to have the best price. Where did you get yours?

 

Please take pics of the items and how they latch together.
Also if you remember try to track the order that items are removed.
Good luck.

 

khoakhoa

Where are you in San diego, I would like come to see you to compare some note if that possible, I am in Mira Mesa, just did all 4 doors, trunk and back seat, aslo just upgrade 4 speakers. Everything sound good and better than before, but I am not really happy yet.

V/r

Khoi nguyen
858-699-7604

PS: call me if that possible

 

Thanks again OP for the inspiration and video instructions for installing Dynamat Extreme. I just finished my doors too - wow, what a difference on sound deadening. When it cools off here, I plan to do the entire floor pan too.