per square foot. In short, this means that, when hit with sound waves, it doesn’t vibrate. m. Use it to cancel noise between floors and ceilings, or between. But if you need to soundproof tricky objects like pipes or vents, or specialized rooms such as a home theater or. Green Glue is typically used for dampening sounds and reducing vibrations, while MLV is used for blocking sound by adding limp mass to a structure. The RC-Boost Clips are becoming the leader of high perfoming acoustical clips!Used in conjunction with resilient channels for a low cost method of reducing sound transmission. Buy Sound proofing materials for Walls, Floors, Doors, and Ceilings & more from Acoustimac. But it’s pricey!Green Glue is a noiseproofing sealant that is made to raise the damping of structures to effectively dissipate sound energy. But it must also be about 1” wider on the sides to create a tight seal around the window frame. 5 40 50 63 80 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 Frequency (Hz) Transmission loss (dB) Green Glue Assembly II, OL 05 1035 MLV Assembly II, Constrained OL 05 1054b MLV Assembly I,. Mass loaded vinyl doesn't really have much of a place in a wall, it can be used for ceilings and floors. So sound proofing is a group effort. Soundproofing HVAC Ductwork and Pipes. James Stamp. – Soundproof Guide Green Glue vs Mass Loaded Vinyl – All the Facts You Need to Decide! Soundproofing can be a pretty tough thing to get just right. Glasswool vs. The reason it is such a fabulous soundproofing material is because sound is an energy wave that travels by vibration. Mass loaded vinyl and green glue are in stock. Using Green Glue To Install Another Drywall 3. January 5, 2023 by Jan. The Green Glue will squeeze into a thin layer (about 0. ™ Damping Sheets; Pipe and Duct Lag; Pipe Lagging; Pipe Lagging with Decoupler; Polyurethane Composite Panel; PVC Barrier. One. Using Resilient Channels; 4. Over the course of several decades, various forms of the material have been sold by retailers of soundproofing materials. Quieting: A Practical Guide to Noise Control. When noise and sound transmission needs to be effectively controlled, MLV Curtains are. Budget. "Level 1" - When cost is the primary consideration; Single stud wall with Green Glue. As the name suggests, mass-loaded vinyl is made of two elements: vinyl and barium sulfate (or similar elements). Resilient Sound Isolation Clips (RSIC) is used in the process of decoupling walls, ceilings and floors. Attach 2' x 4' sheets of Comfortboard 80 to the underside of the joists, attaching with lags through 1x3 furring strips. Made in the USA from virgin material, no odor. Make up a test panel and have it tested. Mass Loaded Vinyl (MLV) has been an industry standard in noise control for decades. 25". MLV has a density ranging from 0. The Green Glue Company is pleased to present data for Green Glue (a viscoelastic damping material), and mass-loaded vinyl, commonly known as MLV (a limp-mass sound barrier). 23 Reviews. This assembly decouples the drywall from the structure to prevent sound from traveling through, adding up to 7 STC points. When buying from an online store, make sure to check the seller’s feedback to ensure that you are dealing with a reputable seller. I wanted to pose a question on room mods but do not see a logical placeto insert it so I am going withI wanted to pose a question on room mods but do not see a logical placeto insert it so I am going withBuy Nankarrow IsoBrane™ 2100kg/m3 Sound Block Mass Loaded Vinyl in India from manufacturer at the lowest & best price. 5 mm). Please note that quality sound blocking products for walls require adding layers of drywall, mass loaded vinyl, and green glue. I am not saying I am an expert on sound but I do sell a lot of mass loaded vinyl in the New York City area. There are a lot of different ways to go about it, and two common options are to use either mass loaded vinyl ( Full In-depth Article) or Green Glue noise proofing compound and sealant. There are even studies showing Green Glue vs MLV outperforming the vinyl by 10-15 dB. Quiet Glue Pro Technical Data Sheet. Find this pipe wrap insulation here! Noise Control Help Line: 1-800-854-2948 M - F 8a. The Green Glue Company is pleased to present data for Green Glue (a viscoelastic damping material), and mass-loaded vinyl, commonly known as MLV (a limp-mass sound barrier). 60 a double panel. Apply a small amount of glue to one surface and hold the two surfaces together for 30 seconds. However, there are two Green Glue alternatives we recommend regularly. Choose from our four size options: 4' X 25'. They can dampen a sound wave by increasing the distance between your bathroom wall and its insulation. Cheap Green Glue soundproofing substitute; Check Price: Sealant Alternative: Noise Grabber Mass Loaded Vinyl. Mass-Loaded Vinyl. per square foot Mass Loaded Vinyl noise barrier. These will leave small holes in the wall, but you can caulk them easily and make them disappear in a manner of minutes if you decide to remove the vinyl at any point. Mass Loaded Vinyl: A Popular Choice for Wall Soundproofing. 1. Simply cut mass loaded vinyl into any shape to create a very thin type of sound barrier on a server rack. Page 3 of 7 - Green Glue - vs. 1. Here is a professional grade Acoustic Absorption Panel from Rhino. An Alternative to Mass loaded Vinyl That’s Better at Soundproofing Walls. Using. Mass loaded vinyl certainly has good characteristics, but floor underlayment apparently has a higher STC rating. Using Green Glue between lays of drywall is also recommended. I wanted to pose a question on room mods but do not see a logical placeto insert it so I am going withNeedless to say, mass-loaded vinyl is a great sound-blocking material which is also known for its flexibility. What you need is to add Mass Loaded Vinyl to the walls and ceilings, or use Green Glue with another layer of sheet rock. To learn more, contact us today! View Our Products Echo Barrier Acoustik Underlament. Water Resistant Properties Green Glue offers some moisture resistance due to its viscoelastic nature, but it’s not entirely waterproof. 13. Prepping the MLV. It worked - the biggest cost was the mass loaded vinyl material. It serves as a damping technique and can be used in place of Green Glue. Thanks, Ted. 5' X 30' - 4' X 10' - 4' X 4' -. Green Glue is made to be used between 2 solid surfaces so it will not work with Mass Loaded Vinyl. Oh and any wall penetration has to be airtight sealed with clay and the door must be thick thick solid wood. It’d help with dampening the 2. 1 LB Mass Loaded Vinyl. Quilted Curtain S. For example, Mass Loaded Vinyl #2 is only ¼ inch thick. Green Glue Soundproofing Compound. Stop footsteps and easily hit building code requirements! $114. If you’re looking for maximum vibration reduction, MLV often comes out as the champ in our books. 135 Square Foot Reinforced Roll . We recommend installing the MLV parallel with the framing. But, at nearly $400 for 5 gallons, it takes the prize for the most expensive alternative. 60=$48. drywall relate to its mass and density. Soundproofing is an art & with the right materials applied to the correct places, you will have amazing results. Fitting layers of drywall separated by Green Glue is one of the most effective ways to reduce sound leakage from your practice studio, even though it may not be the cheapest. Can Mattress Foam Soundproof Effectively? By Sharad Dominic July 10, 2019 November. Example 2: When 2 tubes of Green Glue are applied between two layers of ⅝” drywalls on each side, STC=62. Buy India's largest range of Floors, Impact + Airborne Sound Underlays, Mass Loaded Vinyl (MLV) - Limp. Green Glue Company tested Green Glue at Orfield Laboratories in 2005 and. If you are on a tight budget or have a lot of surfaces to soundproof, then maybe Mass Loaded Vinyl isn’t for you. Preview. Green glue is an acoustic adhesive that is used for soundproofing very frequently. Drywall sheets must be screwed together while the material is still wet. If you're curious on if you should use Green Glue vs mass loaded vinyl, then you should check out our article on the subject. Here are the key takeaways from the chart: The best cheap soundproofing material in [year] is TMS SoundProofing Mass Loaded Vinyl. This is why it’s the go-to product for sound insulation in vehicles. 4. The data was collected at Orfield Laboratories, an independent NVLAP accredited lab in Minneapolis, MN, in 2005, and compares Green Glue to two different common. ft. Need help with an order please call us at 1-877-399-9697. Treatment #2 is very similar as the treatment #1, except instead of using Green Glue between the second layer of drywall, you can use Mass Loaded Vinyl. Mass loaded vinyl; Acoustic foam; Green Glue; Nails; Measure the size of the window, including height, width, and depth. However, there are two Green Glue alternatives we recommend regularly. 57. 6,500 ft^2 of wall is 400 tubes of Green Glue. It can completely seal off air transfers that people might not be aware of. After all, filling in a gap between walls is bound to be more of a time-sink than simply plastering something over a wall. - 5p. Smaller diameter are better for sound proofing. A layer of Green Glue damping compound helps but isn’t completely necessary. Make sure that the sound remains at the same frequency, and stays in the same place. Green glue is $57 per 4x8 total. The wall is currently just empty. It is rated at 26 STC points in the one pound variety and 32 STC points in the two pound version. A typical roll of this MLV is 4 feet wide, 50 feet long, and ½” thick. Allow Green Glue 30 days of drying time for optimal sound isolation performance. If you go with 2 lb/ft^2 with no gaps, you will notice a significant improvement in noise reduction. Adding mass makes it more difficult for the structure to vibrate, and mass loaded vinyl is ideal for this. The data was collected at Orfield Laboratories, an independent NVLAP accredited lab in Minneapolis, MN, in 2005, and compares Green Glue to two different common. Mass Loaded Vinyl. 5' X 30'. Green Glue is also cheaper compared to MLV and much easier to apply. Green Glue - Best to Soundproof Walls? - YouTube If you're in the process of soundproofing a wall, you might have heard of mass loaded vinyl and green. In contrast, drywall is a lightweight material that usually contains gaps. 1 LB Mass Loaded Vinyl. Mass Loaded Vinyl Alternatives. The bad part is that these are not as effective as materials used. 6lbs. Mass loaded vinyl (MLV) is a heavy duty soundproofing material that is often used in construction projects. While Krazy Glue is a brand of Super Glue, their formulations may differ slightly, but they essentially serve the. 14+$23. 59 – $ 363. Retail Pro Audio Commercial. Water. It doesn’t soundproof. Green glue. Barium sulfate is a non-toxic and high-density material that is used. But sound energy can also travel through solid surfaces, like walls, floors, and ceilings. How Does It Work? Mass loaded vinyl absorbs sound waves and prevents them from bouncing off objects. Water Resistant Properties Green Glue offers. If I take a slab of Owens 703, and cut a piece of mass loaded vinyl of the same size and glue it to the back of the 703,. Price $167. Other great and affordable sound absorbing materials are Green Glue NoiseProofing Compound and Roberts 70-193A Felt Pad Underlayment Roll. . Green Glue - Which Is Better For Soundproofing? Soundproof Your Studio 4. Green Glue can be applied to many surfaces, including mass loaded vinyl, which is a type of highly dense material designed to reduce sound transmission. Here in the States, Green Glue is the least expensive damping material at $0. Green Glue vs Resilient Channel download: A 6 page test data guide of Green Glue versus Resilient Channel Admin | Downloads: 6512 |. The curtain is an effective and durable sound absorber that comes with a mass-loaded vinyl barrier. Take a look at the two pictures below - one showing a situation using Green Glue in just the ceiling, and one showing a situation where Green Glue is also utilized in the floor. Green Glue. SoundAway Barrier offers an effective solution to block voices and reduce noise. This limp mass material adds isolation value to any wall or floor system. In the Science of Acoustics, we call it a “Limp Mass Barrier. The data was collected at Orfield Laboratories, an independent NVLAP accredited lab in Minneapolis, MN, in 2005, and compares Green Glue to two different common. HCMStep 4: Mass Loaded Vinyl. Green Glue vs. consider making some soundproofing efforts there as well (such as by wrapping it with an adhesive mass. Mass Loaded Vinyl As one of the more common noise-blocking materials on the market, you may think that it would. 5 40 50 63 80 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000 2500 3150 4000 5000 Frequency (Hz) Transmission loss (dB). Ensure that edges are tightly butted together in all areas. 100 Square Foot, PSA Backed Roll : Mass Loaded Vinyl, 2 LB per Square Foot. Class A Mass Loaded Vinyl Barrier; Coat of Silence – Acoustical Paint; Duct V-Max; Echo Barrier – Outdoor; Green Glue – Damping Compound; Mass Loaded Vinyl Barrier; Melamine Composite Panel; Noise S. So drywall with two layers of it, green glue between the layers, hat channel and isolation clips, and then finally Sonopan or MLV as the layer between the drywall and hat channel. Most people who talk about Green Glue love it because of its versatility, but SONOpan takes it to another level. Mass loaded vinyl and other limp mass products. 3. A well-sealed wall with a MLV barrier on one side will have an STC rating between 47 and 50. The name “soundproof wallpaper” is something of a red herring, as it doesn’t actually soundproof. 5. It. To block all joints, holes, and cracks, Green glue is used as an additional sound stopper. P. Dynamat Car Soundproof Mat. After installing it, you need to set drywall. Steel – 35. 16th June 2017 #3. 36 in. Attach 2' x 4' sheets of Comfortboard 80 to the underside of the joists, attaching with lags through 1x3 furring strips. Add 3/4 inch plywood with green glue between the wooden board subfloor and the plywood. It can also be used on a wide range of building materials such as polystyrene, composite trim board, PVC, medium density fiberboard, as well in ceilings and walls. Read More 3 Best Mass Loaded Vinyl (MLV. For some further explanation on the differences between these two concepts, check out our video above; or to shop our Premium Mass Loaded Vinyl. Size the hole of the nozzle according to the hole that needs filling, making sure not to exceed 3/8” (. - Mass Loaded Vinyl 10 20 30 40 50 60 70 31. 100 Square Foot Roll . Noise Control Help Line: 1-800-854-2948 M - F 8a. Ventilation Duct: Used to create a proper air supply for the generator box. It transforms sound energy into small amounts of heat, effectively dissipating noise and reducing its transmission. Green Glue, which makes whisper clips, is better known for its sound dampening compound. Cut the MLV to. That's more than double the weight of the factory. Adding a layer of the drywall along with green glue will result in better efficiency and noise dampening when it comes to walls. Quiet Glue MSDS. m. If you're in the process of soundproofing a wall, you might have heard of mass loaded vinyl and green glue noise proofing compound. 800-397-8791. Mass loaded vinyl and green glue are in stock. An STC rating of 64 in a wall with GenieClips® RST will yield an STC 54 in a basic ceiling assembly. 60 $13. Improves Communications. Substantially increase IIC and STC ratings of any floor-ceiling assembly with UnderBlock. per square foot. 5 mm Sound Control Underlayment for Vinyl, Laminate and Wood FlooringAdd Mass Loaded Vinyl. MLV is short for mass loaded vinyl (Amazon link). It’s made from 2 outer layers of vinyl with an interior core of either barium sulfate or calcium carbonate. So if I. Metro Supply. 4) Pam: I live in a single level condo. This improves the STC value of the complete assembly. Share Reply Quote. Its weight is an estimated 100 lbs. The best all-around soundproofing product available, Noise Grabber Brand Mass Loaded Vinyl offers premium sound reduction anywhere noise is a problem. - 5p. What you call CLD, I call a layer of Mass Loaded Vinyl (MLV) mistakenly trapped between two layers of drywall (such as QuietRock). They are mostly made of vinyl under really high temperatures and a limp-mass material that acts as a sound barrier. Cut a hole for the light’s wiring, making it slightly larger so it doubles as an air vent. ”. MLV not only offers effective sound-reducing abilities but is also relatively easy to apply. If you want to add mass to your ceiling without removing the drywall, you should invest in MLV. Mass loaded vinyl; Closed cell foam sheets; Green Glue; Vinyl cement or glue; Staples; Ideally, you’ll want the thickest drywall you can find. 2. And remember, a combination of various soundproofing materials and products can and will help you with better sound insulation. Mass loaded vinyl is really heavy. Stick mass loaded vinyl to the outside of the box. The data was collected at Orfield Laboratories, an independent NVLAP accredited lab in Minneapolis, MN, in 2005, and compares Green Glue to two different common. If you’ve wondered which is better, Green Glue vs. Green glue is a viscoelastic compound that insulates sound using the constrained layer damping (CLD) system. Green glue is a natural, non-hazardous glue commonly used in renovations and construction projects. The standard price of MLV is around $110 for a 40′ x 10′ (40 square feet) sheet. Two with the Power Grab, and two with the 77. 4. MLV is 1/8″ thick and will reduce both Airborne Noise and Impact Noise by up to 27 decibels. Materials: One 1/2" x 4' x 4' MDF, Green Glue, acoustic foam, fabric, neoprene mat, spray glue, weatherstripping tape, and handles. CS1: 937 Tỉnh Lộ 10, P. Caulk is paintable once dry. Read more on how to install mass loaded vinyl here. Treatment #2 is very similar as the treatment. It can be custom-made to suit any application and is suitable for industrial, commercial, and residential settings. 40. if you choose "Quantity 12" you will receive a piece 4. It’s generally composed of two elements. 2. In such situations, you might need to consider other alternatives to MLV, including soundproof curtains, Green Glue, drywalls, rugs, and acoustic panels. It is rated at 26 STC points in. If opting for this, it might be worth using normal 2×4 lumber for the furring strips so the whole setup is deeper. I used roughly 2 and 1/2 tubes of Green Glue per 4x8 sheet and Green Glue Sealant in between sheets and also at the top and bottom of each sheet to fill the 1/8th recommended gap. The Rubbery material in Constrained layer acoustic damping is Mass Loaded Vinyl (MLV). View 1 LB View 2 LB Learn More About MLV. Mar 19, 2015. Reinforced Mass Loaded Vinyl; SoundBlox Modular Acoustic Partition;Because Green Glue stays permanently flexible it will outperform most soundproofing products by blocking more low frequency noise. Make sure no air gaps are forming that will contribute to sound leaking. Acoustimac Soundproofing Putty Pads 7. The “active ingredient” in the curtain is an 1/8″ thick, 1lb. Noise Grabber Mass Loaded Vinyl; How to Properly Install MLV on. Green Glue Alternatives. 5. 95. Good; 62: Double 5/8" drywall on either side of a steel stud wall with insulation and 2. People will often choose fiberglass over mineral wool because it’s much cheaper and still effective. 99. For comparison, standard drywall weighs around 1. From this chart you can see that for the most part adding Mass Loaded Vinyl or Green Glue to a wall will greatly increase the transmission loss at frequencies above 250 hz. It is durable and effective at reducing the transmission loss of floor assemblies. There are many places where you can buy mass loaded vinyl in the Philippines. View Green Glue Compound tubes or Green Glue Compound pails. For instance, oxidation or impurities can cause grease to turn brown or black, while additives may give it a distinct color. Generally, it is heavy and smooth in texture. Page 2 of 4 - Green Glue -vs. 4. Density: 1 lbs/ft2; Dimensions: 54” x 24” Size: 9 ft2; Made of mass loaded vinyl material; Offers both acoustic and heat resistance; It’s durable; Check Price: Henkel OSI SC175 Draft And Acoustical Sound Sealant. Used as a sound barrier in homes, offices and hotels. T. Green Glue Noiseproofing Compound vs. Although it isn’t self-adhesive, it is cheaper than self-adhesive MLVs. It's all about the "sum of all the parts" here. All I know is that with mass loaded vinly and Green Glue in my wall with 5/8, green glue,1/2 dry wall, R-13 fiberglass and 1/2 dry wall, in the room with a boom box, my system is still down. It’s a sealant designed to fill up cracks and gaps when undertaking soundproofing projects. (Full) Rolls: Cases of 6-8lb Medium to High Density Mineral Wool Insulation: OR : Cases of 10-12lb Super to Ultra High Density, High STC Soundproofing Insulation:Mass loaded vinyl is a panel-like material used to decrease the airborne noise through ceiling, walls, and floor. - Mass Loaded Vinyl 10 20 30 40 50 60 70 31. Our use oc703, double drywall, green glue, and RISC clips like the home theater guys do. (Half) Rolls: OR : Mass Loaded Vinyl 100 Sq Foot. Test cost is around $1,500, plus material and your time. Among all the sound-dampening compounds, Green Glue is the most effective in deadening sound. In terms of quality and performance both these are at par but one of the biggest differences between the two is that QuietGlue is 35% cheaper than its competitor Green Glue. Green Glue Technical Data Sheet. Air seal and add mass by applying the layers of drywall +Green Glue in the joist bays. This Mass Loaded Vinyl Barrier is a one pound barrier, weighs 1 pound per square foot. If the window is intended to remain shut, stuff foam weatherseal into the window stops and to the top of the window sash. com. Mass Loaded Vinyl: A Versatile Soundproofing Material for Improved Acoustics. The Bituthene. E. It is composed of vinyl and barium sulfate. 5. By airborne means, sound can leak from one room to another via gaps in: 1. 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. Using 2×6 lumber means the cavity inside the wall will be larger, so you can add more insulation. What is Better than Mass-loaded Vinyl? 1. You can add a decent amount of mass to your walls with MLV, or mass loaded vinyl. 00. com FREE DELIVERY possible on eligible purchases. May 19, 2023 There are plenty of tips and tricks for soundproofing your space. It’s a well known and widely used soundproofing material that’s pretty good at its job. (Central Time). One each on the smooth and sanded sections. Acoustic Caulk & Green Glue Applicator, quart size tubes Our Price. MLV has a permeability of 0. This material will not help with. Your potential savings is around $4,000, assuming $1,500 for the other expenses. Also Read: Green Glue Vs Mass Loaded Vinyl. While expensive, sheets of mass-loaded vinyl can be layered or cut into strips and attached to studs and joists to limit sound transfer between rooms. Nothing beats the effectiveness and ease of installation of mass-loaded vinyl. Mass loaded vinyl is limp mass, meaning it doesn’t vibrate when sound waves hit it. Soundproofing a floor: How about cement backer board w/ Green Glue and mass-loaded vinyl? Ask Question Asked 12 years ago. Sound can pass out of thin metal ducts as easily as it can pass into them. It is basically a viscoelastic material, such as polyvinylchloride, that is infused with an inert material, like calcium carbonate or barium sulfate. 50 depending on the type, manufacturer, and seller. Flexible, low surface energy, or non-stick materials. mass loaded vinyl. 60 $13. Free. Make sure the drum room is either carpeted or has plenty of rugs. 4. The. While Krazy Glue is a brand of Super Glue, their formulations may differ slightly, but they essentially serve the same purpose. The Green Glue Company is pleased to present data for Green Glue (a viscoelastic damping material), and mass-loaded vinyl, commonly known as MLV (a limp-mass sound barrier). 2. The Differences of MLV vs. Attaching mass loaded vinyl to the studs is another way to improve a wall without using. 1st query is if its cheaper to use mass loaded vinyl instead of green glue , whats the better performance ? I was planning to do the same for the ceiling but came across a system using acoustic hangers, so which is better resilient bars or hangers ?. Acoustimac Soundproofing Putty Pads 7. , will not help with isolating footfall noise. Damping: There are several products that are used for this, and Green Glue (check my review) is a popular option. This combination gives it a set of characteristics similar to those found in the original lead sheets but without the potentially dangerous side effects. m. I play and record metal bands all the time and just built out my place, I did 2 layers of drywall with green glue in between and on the ceiling of the main room, we loaded 1lb mass loaded vinyl into the ceiling sandwiched between 2 layers of drywall . with insulation lightly placed inside and possibly some green glue or mass loaded vinyl on the inside (don't forget the ceiling/roof, as it will. The reason it is such a fabulous soundproofing material is because sound is an energy wave that travels by vibration. Important Notice: SilentWrap™ Mass loaded Vinyl PSA needs a smooth surface to bond effectively. 5-2lbs. STEP 1: Cut ¼” (. The mass of the specialty plasterboard won't outweigh / replace the benefit of damping. 25" x 7. 3 This is mainly due to the substantial manufacturing process mineral wool undergoes. Mass loaded vinyl and green glue are in stock. To further secure them, use a. Hang Mass Loaded Vinyl on the inside of the door slab. (1 tube gives about 70% of the benefit of 2 tubes). What makes it unique is that it has a lot of mass and is yet flexible. 45. This is why it’s the go-to product for sound insulation in vehicles. A thin 1/2" layer of factory damped dyrwall weighs 68 lbs per 4x8 compared to 144 lbs that Green Glue and 2 layers of Type X drywall weights per 4 x 8. Mass loaded vinyl (MLV) is a versatile and highly efficient soundproofing material. If your basement is finished, you aren’t out of. Priced per piece. MLVis a dense, flexible, and heavy material made of vinyl impregnated with metal particles or barium sulfate. I know MLV has been blasted in the forums before as being "not effective" in its soundproofing purposes versus the cost. 25" x 7. And it will leave marks on the wall. So I hope that helps a little bit with the explanation.