{"product_id":"enviroflex-1lb-mass-loaded-vinyl-4x25","title":"EnviroFlex™ 1LB 4' x 25' MLV Soundproofing","description":"\u003ch2\u003eManufacturer-Direct Mass Loaded Vinyl\u003c\/h2\u003e\n\n\u003cp\u003eEnviroFlex™ 1 LB Mass Loaded Vinyl is manufactured by EnviroFlex, a Quebec-based producer of recycled rubber and vinyl products. When you buy from Sheets \u0026amp; Rolls, you're buying directly from the source — no distributor, no middleman, no markup stacked on top of someone else's margin. The same commercial-grade MLV used by acoustical contractors on professional installations is available to you at trade pricing.\u003c\/p\u003e\n\n\u003ch3\u003eHow it works\u003c\/h3\u003e\n\n\u003cp\u003eMass loaded vinyl works on a simple principle: sound transmission through a wall, floor, or ceiling is directly related to the mass of that assembly. Heavier surfaces transmit less sound. MLV adds mass in a thin, flexible, limp layer — dense enough to meaningfully block airborne noise, flexible enough to install on irregular surfaces, in vehicle door cavities, and behind finished wall assemblies without requiring structural modifications.\u003c\/p\u003e\n\n\u003cp\u003eEnviroFlex 1LB MLV carries a \u003cstrong\u003e26 STC (Sound Transmission Class)\u003c\/strong\u003e rating, which corresponds to a reduction of approximately 20 dB in airborne sound — enough to reduce loud conversation to barely audible levels through a treated wall or ceiling.\u003c\/p\u003e\n\n\u003ch3\u003eWhat it's used for\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003eApartment and condo party walls — blocking neighbor noise\u003c\/li\u003e\n  \u003cli\u003eHome theater walls, floors, and ceilings\u003c\/li\u003e\n  \u003cli\u003eRecording studio isolation\u003c\/li\u003e\n  \u003cli\u003eHVAC duct wrapping and mechanical room liners\u003c\/li\u003e\n  \u003cli\u003eGenerator and compressor enclosures\u003c\/li\u003e\n  \u003cli\u003eCargo van and truck cab soundproofing\u003c\/li\u003e\n  \u003cli\u003eBoat engine bay insulation\u003c\/li\u003e\n  \u003cli\u003eBasement ceiling liners beneath noisy rooms\u003c\/li\u003e\n  \u003cli\u003eLaundry room and home office walls\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation\u003c\/h3\u003e\n\n\u003cp\u003eCut to size with a standard utility knife — score and snap, or cut cleanly in a single pass. Fasten to wall studs or ceiling joists using screws with large fender washers, cap nails, or construction adhesive. The material is flexible enough to drape over curves, wrap around corners, and fit inside irregular cavities. Seal all seams and perimeter edges with \u003ca href=\"\/products\/mlv-seam-tape\"\u003eEnviroFlex MLV Seam Tape\u003c\/a\u003e to maintain the acoustic barrier. Ships rolled — unroll and allow 15–20 minutes to relax flat before cutting.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDensity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 lb per square foot\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSTC Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e26\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\/8\" (0.125\")\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePost-industrial recycled vinyl\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLead \/ fiberglass\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFire rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFire-retardant\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShips as\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRolled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhy buy from Sheets \u0026amp; Rolls?\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer-direct pricing\u003c\/strong\u003e — you're buying from EnviroFlex, not a reseller\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e on all MLV orders\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrice match guarantee\u003c\/strong\u003e — find it lower anywhere, we'll match it\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVolume discounts\u003c\/strong\u003e available — contact us for project pricing\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReal product support\u003c\/strong\u003e — call or email and you'll reach someone who knows the product\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eNeed help sizing your project? Use our \u003ca href=\"\/pages\/soundproofing-calculator\"\u003eSoundproofing Calculator\u003c\/a\u003e or \u003ca href=\"\/pages\/contact-us\"\u003econtact us directly\u003c\/a\u003e.\u003c\/em\u003e\u003c\/p\u003e","brand":"EnviroFlex®","offers":[{"title":"Default Title","offer_id":43068248490053,"sku":"MC5000003CMUS","price":247.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/2799\/5973\/files\/primary-mass-loaded-vinyl-roll-wavy.jpg?v=1773815757","url":"https:\/\/sheetsandrolls.com\/products\/enviroflex-1lb-mass-loaded-vinyl-4x25","provider":"Sheets\u0026Rolls.com","version":"1.0","type":"link"}