What Is Mass Loaded Vinyl (MLV)? MLV is a thick, flexible material which is specifically designed to act as a soundproof layer. Mass loaded vinyl can also be used as a carpet. Mass Loaded Vinyl, or NuWave Base, or just MLV, is a high performance,. single number quantity summarising the transmission loss of a material over the frequency range from 100Hz to 3. Lowest price in 30 days. 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. 3/8″ lb/sf. $ 236. Mass Loaded Vinyl. Add a Rug or Carpet: 1-3: 2: 18: Purchase a Soundproofing Kit:. It can also help. Simply put, this means that STC measures how much sound is lost when traveling from one side of a wall, floor, or ceiling, to the other side. As a leading supplier, self adhesive version is also available and supports quick installation. Should I also put mass loaded vinyl under the underlayment and vinyl plank flooring? How much will the STC differ? Any rules of thumb? --- The appraisal says it has 660 sq feet. Noise Grabber Mass Loaded Vinyl - 1 LB, 4' x 25', 100 Square Foot Roll of MLV - Dozens of Options, Soundproof Barrier, Reduces Noise, Installs Anywhere, Made in The USA. E. Noise Grabber Mass Loaded Vinyl - 1 LB, 4' x 25', 100 Square Foot Roll of MLV - Dozens of Options, Soundproof Barrier, Reduces Noise, Installs Anywhere, Made in The USA 4. Cotton used to be a very common material for carpets but has since declined in popularity. I'm already planning to install the thickest carpet pad I can buy under the carpet (which will be a great upgrade from the builder grade pad), but I'm interested in installing MLV under the carpet pad to help reduce sound transmission from other parts of the house. m. Step five: Then place the drywall or any hardboard material. Details. See Buying Options. You can use soundproofing. MuteBarrier makes an ideal acoustic underlay to help soundproof flats, apartments and commercial. Acoustimac Soundlock Mass Loaded Vinyl 1lb Soundproofing barrier roll. 1. Feet Thickness: 1/16" STC Values between 10-36 from 100-4000 hz. Additionally, MLV is equally effective attached to framing or constrained between layers of drywall, plywood, plaster, etc. RSIC-1 Clips (resilient sound isolation clips) – prevent sound from noisy neighbors from transmitting through your walls or floor/ceiling assemblies. It's important to to cover as much area as possible, with as few gaps as possible. $186. $17999 ($0. 99. Floor Underlayment. Mass Loaded Vinyl is an industry leader in adding heavy mass to your floors, walls, ceilings, and structures. Read honest and unbiased product reviews from our users. 1:1999. 87. MLV is also the sound control material of choice to use under carpet when a noise problem exists between a floor/ceiling in an existing home and adding drywall with green glue to the ceiling. Mold and mildew resistant. 1 Required Tools & Supplies • Mass Loaded Vinyl • Tape Measure • Utility Knife • T-Square or Straight EdgeJust as the name implies, Mass Loaded Vinyl is used to add mass to surfaces, as well as dampen and absorb sounds. Mass Loaded Vinyl MLV Barrier 4' x 50' 1/2 LB Half Pound 200 Square Foot Roll Soundproofing Acoustic Barrier Noise Grabber Mass Loaded Vinyl - 2 LB, 4' x 4', 16 Square Foot Roll of MLV - Dozens of Options, Soundproof Barrier, Reduces Noise, Installs Anywhere, Made in the USAAn underlayment can be beneficial for any type of flooring, including luxury vinyl plank flooring. Materials include mass-loaded vinyl, drywall, soundproof sheetrock, plywood, fibreboard, concrete or rubber. Black/Grey. 2. The Antivibration Soundblocking Floor Mat has three important layers working together to compliment and enhance each other: 1/16 inch Traffic resistant floor vinyl – to provide durable washable surface to walk on. 00. This high performance solution reduces unwanted sound transfer under floors; it helps create quieter living spaces and is ideal for situations that have a higher noise level. com. 36 in. Overlap the sheets to compose as solid a barrier as possible, and then caulk any seams with acoustical caulk. m. This allows the barrier to move in 3-Dimensional space. ft. It can make the floor quieter and more comfortable. It is the standard 1 lb per sq ft version. Recommended for use with LVT 5 mm and thicker. From. Our Price: $199. It is often used as an. Which will do more to reduce sound/vibrations from drums? A roll of 2 lb mass loaded vinyl (. In addition to its soundproofing properties, mass loaded vinyl has a number of other uses. Tonioli . It works as a potent sound absorber and a functional. Installing AudioSeal ® Mass Loaded Vinyl Soundproofing Barrier on the studs prior to building a finished wall will add a limp mass barrier to the construction. Green Glue is also lower in cost and much faster to apply than MLV. $ 149. Subtract 1/8-1/4” from the total height to allow for a perimeter gap. Vinyl – this is what gives MLV its flexibility. Page of 1. 1. It is possible to put mass-loaded vinyl under a carpet. Opt for different width panes (3/16 + 1/4 if you can) as well as a large air gap. 1 LB Mass Loaded Vinyl. Available at a lower price from other sellers that may not offer free Prime shipping. How to install Mass Loaded Vinyl in a car. The best product for handling impact noise is carpet and a thick pad underlayment. Under carpet pads (in addittion to those attached to the carpet) Under rear seat pad. You’ll notice that the y-axis shows numbers below zero. I only need a supply of pre 65 gas to finish my current build. Not designed for use under ceramic, porcelain, or VCT tile. Has anyone every used floor underlayment in place of mass loaded vinyl or know if the floor underlayment is more effective for deadening sound? So is floor underlayment a more effective sound deadener overall, This seems off to me. Mass Loaded Vinyl Barrier (MLVB) – an acoustical barrier made from high-density limp mass barrier material to support noise reduction and transmission. Luxury Liner is our MLV without the fused layer of closed cell foam. This typically means pulling the carpet, and covering the entire floor, as well as the doors. Dimensions: 1. 1LB Mass Loaded Vinyl - 1/8" thick and weighs 1 pound per square ft. Use a T-Square or Straight Edge to cut a square edge. It’s the closed cell foam that is most important in reducing the impact noise here, hence the MuteMat 3, with the extra layer of. High quality 1 LB Mass Loaded Vinyl - 1/8" x 4. This is a High Quality Mass Loaded Vinyl which boosts soundproofing performance by adding mass and preventing structure from vibrating. Each has a different level of noise reduction: 1/8 inch: Reduces. The barrier forms a thin, lightweight acoustical and fire rated product which can be used in many applications including HVAC Duct work, pipes and machinery. Essentially, a fake floor is an extra floor on top of your existing one which can be packed with multiple layers of soundproofing to fight even the noisiest airborne and impact sound. Space is a huge issue, basically lack of it. mass loaded vinyl is added to structures to add mass without taking up space. 1 LB Mass Loaded Vinyl. An underlayment can be installed on any type of subfloor, including concrete or wood. These barriers are as heavy as lead but use no lead fillers. Remember to cut out electrical outlets and other openings in the. C. MuteBarrier can also be used on walls, ceilings and to construct acoustic fences. Obviously, the wall can’t be made to be floppy; but the soundproofing inside the wall can be floppy. ) x 61. However, this won’t be effective if you’re looking for materials to reduce impact noise like a hammer strike. In addition to its soundproofing properties, mass loaded vinyl has a number of other uses. Now that you have the material, you can start installing. Damping sound is the reduction of resonance in a room through reflection and diffusion. With 100% coverage, Luxury Liner Pro will reject all forms of airborne. This means sound cannot bounce itself off of it and instead disperses along its surface. Step 2: Strip the Area. $ 273. CALL 0493213101 FOR MORE INFO. As an adhesive, it’s used during construction to hold panels together to reduce the sound that passes through. We offer the best mass loaded vinyl products for your soundproofing needs. BRAND MASS LOADED VINYL Warranty and Disclaimer Due to installation variables beyond our control, SoundproofingMLV. MLV is best hung directly on studs, but can be installed on top of existing drywall when. Get it Wednesday, 22 Nov - Tuesday, 28 Nov. The top acoustic underlays for a laminate floor are the MuteMat OSF 750-10 and the MuteMat 2. 00. OUR CUSTOMERS USE THISTHIN SOUNDPROOFING RUBBER MATT ROLL FOR: Soundproofing Basements Soundproofing Conference Rooms and Offices Soundproofing sheet rock walls. Concentrate on ensuring that seal quality is. 00. 15 kHz under AS/NZS 1276. 25 Ibs/sq ft, 1 x 8 Feet MLV Insulation Sheet, Anti Vibration Deadening Soundproofing Material (1/8" thick, 1 x 8 feet) (1/8" thick, 1 x 8 feet). The 1/2 inch foam pad keeps it from shifting and the mass loaded vinyl soundproofing layer is smooth and comfortable to walk on. Choosing the Right Mass Loaded Vinyl. 4. PREPARATiOn: MEAsuRing And CuTTing MAss LOAdEd VinYL 1 2 3What material can I use so I have similar effects as MLV (Mass Loaded Vinyl)? Basically I will be looking for a heavy, flexible material, that is on sheets and does not smell awful. Mass-loaded vinyl, resilient channel,. At only 1/8″ thick, you will save space in your wall construction. Save 25%. This Noise Damping Wrap consists of flexible Foil Faced Mass Loaded Vinyl Barrier laminated to a Quilted Fiberglass absorber / decoupler with Scrim Reinforced Foil on outer side. 4. ft. Products. Mass Loaded Vinyl (MLV) Discount Rubber Direct 2020-04-21T13:01:08-04:00 Over 7,000 custom sizes available by width and length. 6 sqft Sound Proof Padding, Fire/Water Resistant Acoustic Treatment FoamBlocking sound waves before they reach your ears is the key to reducing noise levels. The carpet itself looks marginally better quality, though this may be a factor of the age of my old carpet (maybe better manufacturing techniques are used now in comparison to 4 years ago) or the abuse I've subjected it to (many miles, lots of time. 2m x 4mm (1. FatMat Self-Adhesive can be cut and place in between the small structure groves on the floor to help with noise. 5ft x 30ft (135sqft) 4. I plan to use one of these materials between a caster plate and the flooring of a music sound booth. 95. 6. Subtract 1⁄8" - ¼" from the measured length. A Mass Loaded Vinyl used in Floor Applications. com, hardwood floors can increase the value of a home by as much as 2. MLV has been specifically designed for soundproofing purposes and can be used on floors, walls and ceilings. The highest mass MLV we offer (10kg per m 2 ). 3. I don't believe what the showdown website says anymore. If you require sound control for airborne sounds such as talking, music, TV, etc. Has anyone used Zealous Mass Loaded Vinyl Pre-Cut Mats? They're not badly priced I think and would love to eliminate the road noise as much as possible. Mass loaded vinyl. Under cowl pad. For a big upgrade use our premium soundproof carpet underlayment which utilizes sound barrier bonded to a closed cell. Do not use AudioSeal® Mass Loaded Vinyl (MLV) Soundproofing Barrier to surroundPremium Carpet Underlay. Size. Whether the noise is coming from a compressor enclosure, a noisy air duct, a drainage pipe, or granddad’s TV blaring a notch too high, easy-install soundproof barriers can help restore peace and quiet to your space. It's heavy (which is why it works), and more challenging to install. SoundBlanket® MLV is easy to install on floors, walls and ceilings because of its flexible nature. c) Filling the frame completely with Rockwool (50mm). Typically, these cars are missing a lot of the factory sound deadener. Install MLV – Mass Loaded Vinyl. m. DynaMat and MLV (Mass Loaded Vinyl). To be extreme: All the mass loaded vinyl and all the decoupling in the world won't help as long as there is a tiny gap in the window frame. m. Read our article for more! Noise Control Help Line: 1-800-854-2948 M - F 8a. Mass loaded vinyl. x 20 ft. It’s a bit on a pricey side, especially when compared with. Roll size: 4'x25' Area: 100. $ 149. By fusing mass loaded vinyl to closed cell foam, we've developed an airborne noise barrier that's equivalent to building an extra wall on the floor of your vehicle. Using interlocking floor mats is one of the easiest ways of soundproofing. View 1 LB View 2 LB Learn More About MLV. Soundsulate 1 lb Mass Loaded Vinyl MLV, Soundproofing Barrier; Havelock wool. 75sqm Per Roll. It doesn’t matter whether you want to soundproof walls, ceilings, floors, or noisy machines—SS5 will get the job done. How to Install Mass Loaded Vinyl. It will increase the STC of the wall by 7-11 points on metal studs, and 4-6 points on wood studs. 00. 69m² Hudson Perle Rustic Self Adhesive Vinyl Plank - 16 Pack. Roger Wetherington. 99. Fix a sheet of mass loaded vinyl to this. Obllsuee Sound Proof Foam Panels 107 Ft² High Density Roll Of Mass-Loaded Vinyl Dense Sound Barrier For Walls Ceilings Floor Ktv Cinemas (Color : 1 Roll, Size : A Thickness 1. Peel and Stick Self-Adhesive Backing ensures easy application. - RSC-1 sound isolation clips. Under flooring. Mass Loaded Vinyl and single 5/8″ drywall is probably your best balance between soundproofing and heating. Transform your space with high-quality flooring solutions from Acoustical Surfaces. They are actually pretty quiet with all of it installed. It is non-toxic, and has a high relative density that makes it effective in blocking sound. Underpad under vinyl is very rare and very expensive. The design and calculation requires a professional structural engineer and acoustic designer. On the cheaper end of the cost spectrum, you can increase the mass of the door by hanging a thick blanket or carpet on it—an easy but temporary fix. with the vinyl layer, i can keep my bass under control behind it, block sounds. Mass Loaded Vinyl. The heavier the material the higher the soundproofing performance. Place a Mass Loaded Vinyl Mat Under the Carpet. polyether decoupling foam & mass loaded vinyl sound blocking barrier. It is possible to put mass-loaded vinyl under a carpet. Mass Loaded Vinyl (MLV) comes in 1 or 2 pounds/sq. Noico 80 mil is a sound deadening mat made of a butyl rubber base, with a thickness of 80 mils (2 millimeters) and a weight of 0. View 1 LB View 2 LB Learn More About MLV. Roll Length. Mass Loaded Vinyl (MLV) is a safe, non-toxic vinyl acoustic noise barrier designed to hang as a limp mass in a variety of soundproofing applications. 2mm (0. 3 3. There are floor moisture issues to consider, depending. 59 – $ 363. Can be used. 2m x 1. Price $430. Builders typically add it to the interior of walls and doors, but it can still be hung on the exterior of walls or underneath rugs. Add to cart. However, it will not be as durable as using a traditional flooring installation. FloorMuffler Ultra Seal Underlayment 300SF. 2Mm 107 ft²) £31899. Find helpful customer reviews and review ratings for Soundproofing Material Mass Loaded Vinyl Soundproofing Wall Soundproof Floor Outdoor Sound Barrier MLV with Acoustic Noise Barrier for Sound Proof Door Ceiling Cars (2 Lb 48 Sq. Discounst for multiple rolls see below. 15. 0 lbs. After scouring the market, we found the TMS Mass Loaded Vinyl to be the ideal model for all-around soundproofing. Clean any rust you find with a wire brush. /sq. Some products try Mass Loaded Vinyl can be installed over existing surfaces or directly to wood and metal framing. On wall or floor / Ceiling assemblies, AudioSeal® Mass Loaded Vinyl (MLV) Soundproofing Barrier can be installed on wall framing before the gypsum is installed, on top of floor joists, on top of sub-floor, or attached to joists from below. You can place it under this existing carpet. Non-Slip Area Rug Pad 2'x4', 1/3" Thick Dual Surface-Felt+Rubber. The only downside to using MLV as your carpet underlay is that. Here at SoundAway, we carry a wide selection of acoustic underlays to match nearly any kind of flooring. Place the roll of Mass Loaded Vinyl on the floor, then cut to length. £31. If you want to soundproof the floor in the vehicle cabin, place it beneath the carpet. Can also be used on walls, floors and ceilings. Our Premium Carpet Underlayment consists of a foam layer supporting an acoustic mass loaded vinyl barrier. Install 1/4″ G1S (Good One Side) plywood over the soundproofing to provide a smooth, level surface, and glue down the vinyl. For laying down flooring, tile and LVP is relatively easy if you can follow directions. The more surfaces of a car interior are covered with Mass Loaded Vinyl, the better the bass will be. Space is a huge issue, basically lack of it. 7 pounds per square foot. Place the soundproof underlay. Treatment #2 is very similar as the treatment. Suitable for use in walls, floors, ceilings and many other places, TechnoWall Acoustic MLV offers a premium acoustic barrier that can help reduce the. The solid core contributes mass, and the exterior jamb has weatherstrip all around for a reasonable seal. £ 19. I'm thinking Reflextix would be the way to go (light weight, cheap + insulation value). For any soundproof wall installation, always use 5/8” drywall or a soundproof drywall. It is best to expose the outlets boxes as you install each length of MLV. It is a very thin piece of material, but its density makes up for it. Smaller diameter are better for sound proofing reasons. See more reviews. Mass Loaded Vinyl . . The material is incredibly dense,. It appears that you're pretty much stuck with mass-loaded vinyl (MLV), QuietWood, and a few other sheet-type materials. The carpet itself looks marginally better quality, though this may be a factor of the age of my old carpet (maybe better manufacturing techniques are used now in comparison to 4 years ago) or the. Does mass loaded vinyl smell? SKU:. It is typically attached to joists or studs and often followed by acoustic caulking or barrier tape. ). J. The decoupled walls and ceiling would be constructed on top of the slab. 6 Mass Loaded Vinyl for Walls. MLV is included in the construction of the walls, ceilings and under timber floors. Thermotec Australia developed an extra HEAVY-DUTY, high performance, flexible soundproofing barrier called NuWave Base, or Mass Loaded Vinyl Insulation. 5' X 20' 3/8" was $400. UberQuiet MLV Seam Tape, 2" x 108' - for Installation of Mass-Loaded Vinyl Noise Barriers or Floor Marking Tape. b) Then mounting a wooden frame of 50mm right on this. Size: 1x5m, 1x10m Thickness: 3mm, 2mm, 1. Used as a primary layer for sound isolation in hotels, nightclubs, cineplex and buildings. Our Available MLV Weights. These are both 10mm so do not raise the. net. 95/Count) Typical: $19. With 100% coverage, Luxury Liner Pro will reject all forms of airborne. If it’s removable - take it out. There are three main terms to. MLV is best hung directly on studs, but can be installed on top of existing drywall when needed. 15 kHz under AS/NZS 1276. Sound insulation is not the first or last industry to take full advantage. Mass Loaded Vinyl is an excellent sound dampening material that is used for soundproofing. Soundproofing underlayment under rigid flooring Cork is an inexpensive soundproofing underlay. There’s a lot of greasy gunk on the mass loaded vinyl from whatever adhesive he used. This is a blend of high mass vinyl with close cell foam. I was looking through your products and found the Mass Loaded Vinyl. Mass Loaded Vinyl . Mass Loaded Vinyl 3mm Specifications. ft. g. I know they are using it in the. Measure your wall from top to bottom. Mass Noise Liner replaces cotton jute or shoddy, creating far superior sound proofing results. ft. Rearranging the Furniture. rev 2023. Create a Sound Screen Around Noisy Machinery. MLV Disadvantages. Step 1: Remove the wheels and plastic wheel liners and use plastic or tape to cover the surrounding frame and rotor. May be used under carpet, vinyl, tile, wood, laminate and resilient floorings. Dynamat Car Soundproof Mat. Mass Loaded Vinyl, or MLV, is a thick, yet flexible vinyl material that is impregnated with small metal particles. MLV for soundproofing can be placed between the layers of a wall in order to reduce sound. What is the thickness and weight of mass loaded vinyl? What is the difference between TotalMass MLV and other brands of mass loaded vinyl? Where should I use. 4. This setting will increase the additional sound deadening layer of vinyl on your floor. 1. Barium Sulphate or Calcium Carbonate – these highly dense elements give MLV is soundproofing capabilities. Can You Mass Loaded Vinyl Under the Carpet? Mass-loaded vinyl applies to any surface that needs a. It is a thin and flexible material that is easy to cut-out and install. It serves as a damping technique and can be used in place of Green Glue. Fixed Flooring: For tile, stone, vinyl, VCT, and glue down hardwood, it is required that the IsoRubber is glued to the sub-floor. Soundproof mat for floor is available in 1000mm wide rolls and 5 standard thicknesses (3mm, 5mm, 8mm, 10mm and 15mm). Add to Cart. 00 The mass loaded vinyl noise barrier with a decoupler by Acoustical Surfaces reduces sound transmission in ceilings, walls, floors, machinery, and pipes. Mass Loaded Vinyl 1/4" thick weighing 2 pounds per square foot. • Use with Laminate and Wood Floors. SoundBarricade 200 sq. 1/8. Underlayment can improve the flooring by adding its insulating and soundproof nature. 1. 3) Tim: I am working on finishing a basement are and was just going to put drywall on the ceiling. a) Adding Mass on the brickwall (directly pasting/bolting mass loaded vinyl). Fiberglass. 00 0 items; Skip to navigation. Mar 19, 2015. These are made from butyl rubber, which shares many similar properties with mass loaded vinyl. 36. Mass loaded vinyl can also be used to seal gaps around doors and windows. Several retailers sell fabrics that are specifically designed for soundproofing. per square foot. 2. 1 Lb Soundproofing Wall Soundproof Floor Outdoor Sound Barrier MLV with Acoustic Noise Barrier for Sound Proof Door Ceiling Cars (1. Get Interlocking Floor Mats. Just like with Luxury Liner Pro, we’re very particular about the quality of the vinyl to ensure it’s odorless and the mass per square foot is consistent. MASS LOADED VINYL + FOAM: Each 2’ x 4. Mass loaded vinyl (Amazon link) has an NRC of 0. See moreMass loaded vinyl is a fantastic soundproofing material, whether you want to use it under or over flooring surfaces, or even under the subfloor. 94 inc. Use sound isolation clips on the ceiling side. 8, so you can see how effective cork really is. Click images below for PRICING & more information on each product. Thanks. Superior acoustic protection. 5%. Mass loaded vinyl (MLV) helps create sound-blocking assemblies to reduce airborne sound transmission for new or retrofit applications. span needs to be leveled prior to installation. 61. You should use a heavyweight stapler or screw to that vinyl for tight adjustment. Also be sure to get the vertical area behind the carpet under the seating area. Mass loaded vinyl under carpet. The use of mass loaded vinyl barrier in a non-resilient ceiling/floor assembly (an assembly with no resilient clips or channel installed) can provide a slight improvement in airborne noise isolation only. Concrete floor 3 mm thick, floor rubber underlay 5mm Luxury vinyl tiles/planks. TechnoWall Acoustic Mass Loaded Vinyl (MLV) Barrier is a premium, multi-use soundproofing material that reduces sound wave transmission. Tile, stone, vinyl, VCT, hardwood, laminate, carpet, and other similar flooring types can be installed directly to IsoRubber. Mar 19, 2015. Mold and mildew resistant. If it makes everyone feel better, I will tell you that I used old burlap sacks sewn together with asbestos string. For the MLV, it would cost about: $1000 for 3/32". The mass-loaded vinyl is then stapled onto the frame. You can even sound proof a fence usi. 1- Cut the XPS (Minicell) using the utility knife. Vinyl Plank Flooring - Sound Reducing, Waterproof Underlayment 100 Square Foot Roll. 4 out of 5 stars 42,712. Suitable for use Mass-loaded vinyl is made from plastic, so it does not bring out any odor. 5' X 30'. Place the MLV down, tie it together with metal tape and seal the edge. Otherwise plywood, OSB, and drywall are all more massive choices for much less. Along with noise reduction, this can also include thermal insulation or moisture control. (MNL_Parent) Sheet length: 1600mm: Sheet width: 950mm: Sheet thickness: 12mm (2mm vinyl, 10mm foam) Weight:. Mass loaded vinyl is a fantastic soundproofing material, whether you want to use it under or over flooring surfaces, or even under the subfloor. Sound-Stop 5 (SS5) is our top product for the newbie soundproofer (we know that’s not a real word). It also stays in place pretty well. Why we like it: We like that this is a high-quality sound deadening mat which won’t disappoint performance wise. Replace cotton jute or shoddy underlay with a superior modern underlay that will not only perform better as sound and heat insulation but won't get mouldy and smelly. Door sweeps are installed under the door, closing the gap between the door and the floor so that noise cannot travel under it. 59 – $ 230. Suitable for use in walls, floors, ceilings and many other places, TechnoWall Acoustic MLV offers a premium acoustic barrier that can help reduce the. I think the answer is to add as much mass to the floor panels as possible, preferably with a flexible adhesive like the. Notice that NRC is a speech range sound measurement and does not include any consideration given to subwoofer bass range, which is 80 Hz and below. £ 19. The closed cell foam decoupling side should face DOWN to create a “double wall” effect, improving performance. Using a razor blade carefully cut the opening along the edges of the box.