Prius Prime detailed sound proofing procedure.

Discussion in 'Prime Accessories and Modifications' started by RobertZ, Jul 21, 2018.

  1. RobertZ

    RobertZ Member

    Joined:
    Jan 14, 2018
    49
    52
    0
    Location:
    Nashua, NH
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    This is the guide for sound proofing the Prius Prime.
    I used the company named Second Skin to purchase materials (About $450).
    This project is for someone with moderate or higher mechanical skills.
    Lots of measuring and cutting.
    I definitely felt reduction in road noise.
    You still hear it if road is more porous. However for 85% of driving now it seems you are in Lexus :)
    Do this at your own risk, I am not responsible for any damages!
    Took me 3 days on/off working on the project.

    Tools:
    - Utility knife (with new blades).
    - Trim removal tool set (helps but not required).


    - Tape for measurement.
    - Pencil or marker for marking.
    - Flat piece of wood to make longer cuts.
    - Cardboard or plywood for underlay when cutting LLP.
    - Flat head and Phillips screw driver.

    Prep:

    Need a large ventilated open space so car door can be fully opened.
    Large space to cut pieces of LLP.
    Plenty of time.

    Sound proofing material. Vehicle Sound Deadening Materials for Noise Reduction, and Thermal Insulation. Call 800 679-8511. | Second Skin Audio, Made in the USA.

    Damplifier PRO (DPRO) - tiles with tar adhesive, very thin. Reduces vibrations in metal skin.
    Luxury Liner PRO (LLP) - 3/8" thick sound barrier, spong like material and rubber layer pressed in.

    You stick the LLP with spongy side facing DPRO. Rubber layer should face inside of the cabin.

    I did 4 doors and front floors.
    I will post 5 replies covering each:
    1. Door panel trim removal.
    2. Install the Damplifier PRO (DPRO) tiles.
    3. Install Luxury Liner PRO (LLP) sheets
    4. Driver floor install.
    5. Passenger floor install.
    CAUTION:
    Wear gloves (sharp metal edges) and long sleeve (You will get sticky goo all over your arms/hands when installing LLP).
    Leave the area around drain holes alone (I cut out the spots), don't cover it (See the pictures).
    Attached pictures have more details in the following posts...
    Trim-kit.JPG IMG_4857.JPG IMG_4856.JPG
     
    TGrracie, 7707Prime, GTprii and 3 others like this.
  2. RobertZ

    RobertZ Member

    Joined:
    Jan 14, 2018
    49
    52
    0
    Location:
    Nashua, NH
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    Door trim removal steps.
    Front doors are very easy... See step-1 through 11. More details in the pictures.

    STEP-1.JPG STEP-1A.JPG STEP-2.JPG STEP-3.JPG STEP-3A.JPG STEP-3B.JPG STEP-3C.JPG STEP-3D.JPG STEP-4.JPG STEP-5.JPG STEP-6.JPG STEP-7.JPG STEP-8.JPG STEP-10.JPG STEP-11.JPG Trim Tool.JPG STEP-9.JPG

    For rear doors require extra step.
    REAR-door.JPG REAR-Door2.JPG REAR-Door3.JPG REAR-door4.JPG
     

    Attached Files:

    TGrracie, GTprii and gangpw924 like this.
  3. RobertZ

    RobertZ Member

    Joined:
    Jan 14, 2018
    49
    52
    0
    Location:
    Nashua, NH
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    Install the Damplifier PRO (DPRO) tiles.

    CAUTION: Wear gloves while cutting tiles.
    After backing paper removal careful with sticky side as it's hard to remove once it touches the surface.

    - Cut proper sizes and stick to the outer skin of the door.
    - You do NOT have to cover 100% surface, 60-75% is more than enough.
    (Guy said you need only 60% area covered to be 90% effective).
    - Use the wooden roller to press in the tiles.

    IMG_4894.JPG IMG_4913.JPG IMG_4978.JPG
     
    TGrracie and GTprii like this.
  4. RobertZ

    RobertZ Member

    Joined:
    Jan 14, 2018
    49
    52
    0
    Location:
    Nashua, NH
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    Install Luxury Liner PRO (LLP) sheets.

    - I debated installing this on the inside panel (see the picture).
    I decided against this because of thickness of LLP (3/8 inch) and clearence to install the plastic inside trim on top of it.
    Also SecondSkin guy suggsted installing LLP right on top of DPRO to be more effective.

    The small opening in the door does NOT allow installing large one piece.
    Instead I had to breakup the door in 4 sections (see the diagram).
    This allowed me to pass the smaller cuts through the door opening.
    IMG_5107.JPG IMG_5108.JPG
    Measure pieces multiple time before actually cutting the LLP.

    Spray the contact adhesive on both surfaces then stick the tile.
    Press the LLP in and hold it for 30 seconds and it will stick.
    Apply aluminium tape (bought from HD) on the joints where possible.

    To put back things - reverse the process.

    Pull out electric wires and door handle through white plastic barrier.
    Attach vapor barrier.
    Attach plastic panel, attach 3 screws and put the arm rest pieces back.

    IMG_4897.JPG IMG_4898.JPG IMG_4900.JPG IMG_4904.JPG IMG_4905.JPG IMG_4989.JPG IMG_4992.JPG IMG_5001.JPG IMG_5004.JPG
     
    TGrracie and GTprii like this.
  5. RobertZ

    RobertZ Member

    Joined:
    Jan 14, 2018
    49
    52
    0
    Location:
    Nashua, NH
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    Driver floor.
    I just pulled back carpet enough to install the material, instead of whole carpet removal.
    NOTE: Driver floor attachments are different than passenger side.
    I cut one large and few small pieces for driver floor.
    See step1-15 for details.
    STEP-1.JPG STEP-1A.JPG STEP-2.JPG STEP-3.JPG STEP-4.JPG STEP-5.JPG STEP-6.JPG STEP-7.JPG STEP-8.JPG STEP-9.JPG STEP-10.JPG STEP-11.JPG STEP-12.JPG STEP-13.JPG STEP-14.JPG STEP-15.JPG
     
    TGrracie likes this.
  6. RobertZ

    RobertZ Member

    Joined:
    Jan 14, 2018
    49
    52
    0
    Location:
    Nashua, NH
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    Passenger floor.
    Hardest part is cutting the old insulation out. Need sharp new blades.
    Careful of drainage hose.
    STEP-1.JPG STEP-2.JPG STEP-3.JPG STEP-4.JPG STEP-5.JPG STEP-6.JPG STEP-7.JPG STEP-8.JPG
     
    TGrracie and kenoarto like this.
  7. RobertZ

    RobertZ Member

    Joined:
    Jan 14, 2018
    49
    52
    0
    Location:
    Nashua, NH
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    That concludes the installation posts...
    Hope someone will benefit from this.
    I know I am enjoying my more quieter ride now.
    BTW: Sound insulation in Prime is good but more light weight. Also there was not much in the doors which makes a big difference.

    Robert
     
    TGrracie and kenoarto like this.
  8. Starship16

    Starship16 Senior Member

    Joined:
    Jun 8, 2018
    1,348
    1,432
    0
    Location:
    Beach Christmas
    Vehicle:
    2016 Prius
    Model:
    ----USA----
    Wow! Great job, and great pictures! Way beyond my skill level. Have you sprayed anything up into the wheel wells?

    I seem to get the most road noise coming right through the side window glass. Right next to my head. Very annoying. (window tint didn't help). :ROFLMAO:
     
    #8 Starship16, Jul 21, 2018
    Last edited: Jul 21, 2018
  9. RobertZ

    RobertZ Member

    Joined:
    Jan 14, 2018
    49
    52
    0
    Location:
    Nashua, NH
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    Starship... I have not sprayed anything in wheel wells. On Prius Prime window glass is double pane and you don't hear any wind or other sound. Once I sound insulated door panels it really makes a big difference.
     
    TGrracie and HPrimeAdvanced like this.
  10. audiodave

    audiodave Active Member

    Joined:
    Feb 3, 2017
    643
    234
    0
    Location:
    US
    Vehicle:
    2004 Prius
    Model:
    Five
  11. Starship16

    Starship16 Senior Member

    Joined:
    Jun 8, 2018
    1,348
    1,432
    0
    Location:
    Beach Christmas
    Vehicle:
    2016 Prius
    Model:
    ----USA----
    Double pane windows??? That's not fair! Back to the earplugs... ;)
     
    RobertZ likes this.
  12. Tideland Prius

    Tideland Prius Moderator of the North
    Staff Member

    Joined:
    Oct 2, 2004
    40,341
    11,855
    41
    Location:
    Canada
    Vehicle:
    2018 Prius Prime
    Model:
    Technology
    Stickied! Thanks for the detailed instructions.
     
    RobertZ and Raytheeagle like this.
  13. Rob43

    Rob43 Senior Member

    Joined:
    Sep 24, 2014
    1,110
    771
    0
    Location:
    VA, BMW Race Car, BMW R1200R, BMW 330Ci, Ford F350
    Vehicle:
    2013 Prius v wagon
    Model:
    Prime Advanced
    Great work, great job !!!


    Rob43
     
  14. RobertZ

    RobertZ Member

    Joined:
    Jan 14, 2018
    49
    52
    0
    Location:
    Nashua, NH
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    Thank you all. For me it's all about learning. I have maintained 03 Acura MDX thanks to a forum and done so many jobs because someone else took the trouble to post instructions/pictures. PriusChat is a great community, I have found so many answers for my Prius...
     
    HPrimeAdvanced likes this.
  15. RobertZ

    RobertZ Member

    Joined:
    Jan 14, 2018
    49
    52
    0
    Location:
    Nashua, NH
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    So after driving the car on my commute 35 miles each way on varying road surface, my initial enthusiasm was dampened a bit.
    The doors and floors definitely help reduce the road noise. Still on porous roads it was back like before. Since I had some material left over I opened up the driver side wheel well. See pictured below it's very easy few 10mm screws and several push/pin fasteners. I took out the whole plastic liner and padded it with Luxury Liner PRO material. Rest of the area I covered with vibration dampening tiles (Damplifier PRO). I also bolted large LLP piece to wheel wall (the LLP is too heavy to stay with adhesive).
    Anyways this was a significant step. I have not done passenger side wheel yet and I can clearly notice lack of road noise in the front.
    If I were to do this again I would do wheel walls and doors... I probably have quietest Prius Prime and least MPG efficient one with extra weight :)


    IMG_5173.JPG IMG_5180.JPG IMG_5183.JPG IMG_5184.JPG IMG_5186.JPG IMG_5187.JPG IMG_5185.JPG
     
    #15 RobertZ, Jul 25, 2018
    Last edited: Jul 25, 2018
  16. audiodave

    audiodave Active Member

    Joined:
    Feb 3, 2017
    643
    234
    0
    Location:
    US
    Vehicle:
    2004 Prius
    Model:
    Five
    These area's where a good spray would be nice. I'll look into removing my front plastic wells and applying some.

    Posted via the PriusChat mobile app.
     
  17. RobertZ

    RobertZ Member

    Joined:
    Jan 14, 2018
    49
    52
    0
    Location:
    Nashua, NH
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    Yes the spray type material would work best.
    Check out the second skin web site I listed in the first post.
    They sell spry kind material and also putty type that you can spread it.
    One thing to keep in mind, vibration tiles are important in the fender wall and other areas.
    Also see the 2nd picture, the area around text 'This is driver....' and white line have no sound barrier.
    I think that's the biggest noise leak.
    You can't spray anything there, instead you should spray the back of plastic liner.
    Good luck...
     
  18. randomwalk101

    randomwalk101 DYI'er

    Joined:
    Feb 4, 2012
    530
    252
    0
    Location:
    texas
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Advanced
    If you have to do one area, I guess the wheel well makes the most impact?
     
  19. RobertZ

    RobertZ Member

    Joined:
    Jan 14, 2018
    49
    52
    0
    Location:
    Nashua, NH
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Premium
    I would definitely start with wheel well first, doors 2nd, floors last.
     
  20. randomwalk101

    randomwalk101 DYI'er

    Joined:
    Feb 4, 2012
    530
    252
    0
    Location:
    texas
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Advanced
    Are you going to do th roof? There is virtually no sound insulation up there. Also a good layer of heat reflecting tape or something I think can cut down the sun’s heat a lot. I’m just not sure how to take out (or just lower) the headliner.
     
    kenoarto likes this.
Loading...