TM Soundproofing How to Install Mass Loaded Vinyl

How to Install Mass Loaded Vinyl

Mass Loaded Vinyl can be applied to walls, ceilings, floors and structures to create a sound barrier. Mass is a critical component in sound control and works by simply stopping sound from being able to vibrate the structure due to its heavy weight.

Please read through the installation guide before installing your MLV.  

STEP 1: MEASURE AND TRIM YOUR MLV

Figure 1- How to Install MLV, www.TMSoundproofing.com

Measure your wall from top to bottom. Deduct 1/8” – ¼” from total height.

Unroll your MLV on the floor. With a utility knife, use a straight edge ruler to cut a square edge evenly through the MLV. {See Figure 1}

You do not need to cut through the material fully, once it is scored, it will come apart easily.

The MLV can also be cut with a heavy duty scissor.

STEP 2: PREPARE YOUR WALL FOR INSTALLATION

Figure 1- How to Install MLV, www.TMSoundproofing.com For superior soundproofing results, use Acoustical Outlet Backer Putty Pad around all electrical outlets and other obstacles. {See Figure 2}

STEP 3: APPLYING YOUR MLV

 
Figure 1- How to Install MLV, www.TMSoundproofing.com This step requires the work of two people.

The MLV is applied over the fiberglass installation and beneath the sheetrock.

With the help of another, hold the MLV in place, starting at the upper corner of the wall. Ensure the sheet is straight along the ceiling and is evenly spaced between the floor and ceiling {See Figure 3}

Fasteners: Any type of fastener will work (especially if the MLV will be covered with drywall) we suggest roofing nails or screws with washers, however you can also use a pneumatic cap stapler.

Figure 1- How to Install MLV, www.TMSoundproofing.com

Placement: Place fasteners every 8” along the top and bottom plate {See Figure 4} and down the length of the stud.

STEP 4: EXPOSE YOUR ELECTRICAL OUTLET BOXES

Figure 1- How to Install MLV, www.TMSoundproofing.com

Be careful not to cover electrical outlets boxes. It is best to expose the outlets boxes as you install each length of MLV.

Find the electrical box in your wall and gently press the MLV against the box. Using a razor blade carefully cut the opening along the edges of the box. Keep this hole tight as possible to the electrical box so that you maintain a good seal. {See Figure 5}

Any extra gaps can be filled with Acoustical Caulk.

Continue as above until your entire wall or ceiling is covered in MLV.

STEP 5: FINISH YOUR SEAMS

Figure 1- How to Install MLV, www.TMSoundproofing.com

Where MLV seams fall on a stud, butt pieces against one another on the stud and fasten into place. You can add a strip of PVC Tape on the seam. {See Figures 6 and 7}

We highly recommend that you end all MLV seams on a stud, as free hanging seams may come apart with time.


Figure 1- How to Install MLV, www.TMSoundproofing.com
Figure 1- How to Install MLV, www.TMSoundproofing.com

Where MLV seams falls between studs, overlap pieces by 2" and tape seams with PVC Tape or similar tape. {See Figure 8}

Figure 1- How to Install MLV, www.TMSoundproofing.com

Notch the ends to lay flat. {See Figure 9}

Once all strips of MLV have been applied, sheetrock can be installed above it and you can be ensured a sound-secure structure! For more information about MLV, contact us or call us at 845-388-1200. 

Customers Questions and Answers

1) Ronald S: Once i have the MLV on the studs, Can I use soundboard then drywall? Question should i use foam spacer strips on the studs to create a gap between the MLV and the drywall Thank you, Ron

Trademark Soundproofing Reply:

Yes you can cover the Mass Loaded Vinyl with any covering. No need to create that small gap between the MLV and drywall with foam strips.

2) Monica: Hi, If I apply MLV to walls and ceiling, can I just attach drywall using drywall screws to studs, or is there something else that is needed??

Trademark Soundproofing Reply: That is all that you need to do.

3) Maxine C: Can you fix mlv to plasterboard?

Trademark Soundproofing Reply: Yes.

4) Andrew L: Can I install the MLV over existing drywall and then put another layer of sheetrock on top?

Trademark Soundproofing Reply: Yes it can and is used that way.

5) Anthony M: Can mass load vinyl be place over existing wall

Trademark Soundproofing Reply: Yes it can.

6) mike h: Can you place over existing sheetrock and leave as the inner wall covering? I have a closet I would like to convert to a practice room. I would like to place the vinyl over the wall, using staples or roofing nails.

Trademark Soundproofing Reply: Yes that can be done if you don't mind the color.

7) Greg: Does placing MLV over existing drywall then drywalling over the MLV reduce the effectiveness of the MLV? Do more layers of MLV create a more effective sound barrier? do the ceilings need MLV too if its a shared wall like in a condominium?

Trademark Soundproofing Reply: It does not. Yes, however not as much as the first layer. If you have a shared airspace above the walls than the ceilings most be soundproofed as well.

8) Darren: I thinking of sound proofing my garage. Can I apply MLV to a brick wall?

Trademark Soundproofing Reply: Yes that can be done

9) Beau B: Can mlv be used on the floor? i know that insulation needs air in it and is not effective if squished. is mlv the same? im going to have my workbench on top of it.

Trademark Soundproofing Reply: Yes it can be used on the floor. Unlike insulation, MLV is solid and will not be affected if compressed.

10) Jason P: can u apply mlv with glue and if so what kind of glues should i use

Trademark Soundproofing Reply: Hi Jason we don't recommend any, as some glues may react with the MLV. We have had customers who have used HH-56 vinyl cement successfully.

11) Josh: Hi, Can I hang MLV over existing sheetrock on the ceiling to block noise from upstairs neighbors? If so, is it best pulled taught or left slack? Thanks!

Trademark Soundproofing Reply: You can hang MLV on a ceiling. Taught or slack, either way the results will be the same.

12) John P: Can I use Staples to mount to studs. If so, What size?

Trademark Soundproofing Reply: Yes you can. Standard staple gun would work.

13) peter: Can you paint over MLV? If you install to existing ceiling can you pain t the MLV? If so what kind of paint?

Trademark Soundproofing Reply: Officially, no. However you could take a piece up to a Sherwin Williams store and see what they say Ė Iíve heard of customers using their ĎXIMí primer, then painting it. Keep in mind that once painted if itís moved the paint may flake off.

14) Josh: Do sound clips and hat channels add significant STCs if added to MLV?

Trademark Soundproofing Reply: Hi Josh. Yes they do. Decoupling introduces a new method that can add up to 15 STC points.

15) Malz: should i be using a 1 lb or 2 lb MLV for a home theatre room on the second floor of the house? I will be using a Quietrock drywall, would that be an overkill? Also should i be using the MLV for the ceiling too?

Trademark Soundproofing Reply: The 1 point is easier to handle and install (especially on the ceiling!). Either way it won't be overkill as you are only using a single layer of drywall and there is not that much Mass there (if you switched to a double layer of drywall with Green Glue than the 1 pound Mass Loaded Vinyl is definitely enough).

16) Jose B: Hello, I'm soundproofing a corner in my garage. Should I remove the old sheetrock from the wall and from the ceiling before I install the MLV? Thank very much. Jose

Trademark Soundproofing Reply: The MLV will work well either way.

17) Robert: Can I use mlv on the outside of my house over my tyvek wrap in a cold weather city like Chicago? Will it?s effectiveness change as the temperature changes? Or is strictly for indoor use.

Trademark Soundproofing Reply: Yes. This material can be used outside without any impact on performance.

18) Graham : Can I apply mass loaded vinyl to a plastered brick wall? If yes, do I need to place plaster board on top of it and then paint?

Trademark Soundproofing Reply: You can and it can be left exposed if you would like.

19) Kevin W: I am building out a control room and plan to use MLV for the first time. I generally install OSB first on the framing and then two layers of 5/8" drywall. Two questions: (1) can I substitute one layer of drywall for MLV and maintain same STC rating? (2) if so is it more effective up against the studs or can i sandwich between the OSB and 1 layer of drywall?

Trademark Soundproofing Reply: Yes. MLV will give you equal STC rating to another layer of drywall. Performance will be about the same either way you install it although some contractors like to install it "limp" onto the studs.

20) Jane: Using MLV on the floor in 2nd floor flat - I will have sound insulation slab fitted between the timber joists, my question is do I use MLV over the joists but under my floor boards or do I put the floor boards back down first and use MLV on top?! :)

Trademark Soundproofing Reply: Either way would work. Under the joists would probably be easier for your finished flooring.

21) michael m: If I were to glue mass loaded vinyl to a composite wood board -- plywood, for example -- what adhesive should I use? thanks,

Trademark Soundproofing Reply: We don't recommend any glue as some of them can react badly with MLV, however customers have reported using HH-66

22) alex : Can I hang MLV over windows and doors to soundproof my bedroom? If so, how could i hang it up? Thanks

Trademark Soundproofing Reply: You can. You can staple or nail it. Alternatively you can install Grommets in the MLV and hang it that way.

23) Katie: Is it possible to affix MLV to concrete basement walls? If so, what do you recommend?

Trademark Soundproofing Reply: It is possible. May be best to install wooden furring strips and then mechanically fasten the MLV to the wood strips.

24) Erin: I've read on some sites to apply the MLV loosely as applying it too taught will cause a drum-like echo effect? Is this true? Applying it loosely I think would cause gaps in the sound insulation it's supposed to provide so I'm wondering how best to apply it. Thanks!

Trademark Soundproofing Reply: Hi Erin. It is not true. Lab tests on limp and taught installation show the same results.

25) mike: Can I use this under luxury tile.

Trademark Soundproofing Reply: If you need to glue it down than it is not recommended as some glues may react with the MLV. Unless you cover the MLV with another underlayment first.

26) Lauren V: I need to sound proof a shared wall for a secondary dwelling. the exterior has 5/8" T1-11 that I am planning to attach the vinyl to. I would like to know if I can get the same results with two layers of 1/8" as with one layer of 1/4". Or, would it be better to attach one layer of 1/8" over both sides of the wall.

Trademark Soundproofing Reply: Yes the results will be the same.