{"product_id":"siless-max-120-mil-butyl-sound-deadening-mat-30-sq-ft-heavy-duty-car-noise-vibration-dampener","title":"Siless Max 120 mil Butyl Sound Deadening Mat — 30 sq ft Heavy-Duty Car Noise \u0026 Vibration Dampener","description":"\u003cstrong\u003eSiless Max 120 mil 30 sqft is a heavy-duty butyl sound deadening mat engineered to reduce road noise and vibration for cars, trucks, and audio installations.\u003c\/strong\u003e\n\n\u003cp\u003eIf you need a durable, high-performance damping layer for automotive panels, doors, trunks or floors, the Siless Max 120 mil system delivers thick butyl-based insulation that reduces resonance and improves in-cabin acoustics. Built for installers and enthusiasts who demand industrial-grade results, this 30 square-foot kit balances mass, flexibility and adhesive strength for long-lasting noise control.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the Siless Max mat reduce noise and vibration?\u003c\/h3\u003e\n\u003cp\u003eThe thick 120 mil butyl composite adds mass and dissipates vibrational energy so metal panels stop ringing and transmitting road noise into the cabin. Instead of blocking sound with bulky foam, it converts vibrational motion into heat, which lowers structure-borne noise efficiently.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e120 mil thickness for high mass-loading and damping\u003c\/li\u003e\n  \u003cli\u003eButyl-based Bmastic formula absorbs and disperses vibrational energy\u003c\/li\u003e\n  \u003cli\u003eSuitable for doors, floors, trunks, roof panels and hoods\u003c\/li\u003e\n  \u003cli\u003eReduces rattles and improves audio clarity for car stereos\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat makes installation straightforward for DIY or pro shops?\u003c\/h3\u003e\n\u003cp\u003eSiless Max uses a peel-and-place adhesive backing so you can trim and set panels without extra glues or sprays. The flexible sheet conforms to curves and flat surfaces; hand-rolling ensures solid contact and long-term adhesion.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePre-cuttable sheets for custom fits and small areas\u003c\/li\u003e\n  \u003cli\u003eStrong pressure-sensitive backing — no separate adhesives required\u003c\/li\u003e\n  \u003cli\u003eHand-rollable for immediate surface bonding and sealing\u003c\/li\u003e\n  \u003cli\u003eWorks at common shop temperatures—follow manufacturer surface prep\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat performance benefits will I notice after installing it?\u003c\/h3\u003e\n\u003cp\u003eExpect a measurable drop in mid-to-low frequency noise and fewer panel vibrations, which creates a quieter cabin and better audio performance. The added damping also reduces speaker-induced panel flex, sharpening bass response and overall soundstage.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLower road and engine noise levels inside the vehicle\u003c\/li\u003e\n  \u003cli\u003eDiminished panel resonance and fewer rattles\u003c\/li\u003e\n  \u003cli\u003eImproved loudspeaker performance and clearer mid\/bass\u003c\/li\u003e\n  \u003cli\u003eDurable material that resists sagging and adhesive failure over time\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does Siless Max compare to thinner or foam-based products?\u003c\/h3\u003e\n\u003cp\u003eCompared with thin foil or foam layers, the 120 mil butyl mass provides stronger vibrational damping per square inch and stays effective on metal surfaces. Foam may absorb airborne noise; this mat focuses on structural damping where most automotive rattles and resonances originate.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHigher mass for structural damping than thin foil sheets\u003c\/li\u003e\n  \u003cli\u003eMore long-term stability than many open-cell foams\u003c\/li\u003e\n  \u003cli\u003eOptimized for metal substrates rather than interior sound absorption only\u003c\/li\u003e\n  \u003cli\u003eCost-effective 30 sq ft coverage for large projects or multiple areas\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? Siless Max 120 mil 30 sqft is designed for car audio installers, professional shops and hands-on vehicle owners who want industrial-level damping without complex adhesives. It’s ideal for people upgrading sound systems, restoring classic cars, or anyone seeking a quieter, more solid-feeling cabin. If you need heavy-duty vibration control across doors, floors, trunks or hoods and prefer peel-and-place installation, this kit provides substantial performance and coverage for one or more vehicles.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Will Siless Max fit curved surfaces like door skins?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The 120 mil butyl mat is pliable and can be trimmed to conform to door contours; use a roller for full adhesion.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How much area does 30 sqft cover on a typical sedan?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: 30 square feet generally covers doors and a trunk or floors for one vehicle, depending on how extensively you apply it.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Siless","offers":[{"title":"Default Title","offer_id":67584997556409,"sku":"B09Y5BQYGL","price":215.18,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/siless-max-front-packaging.jpg?v=1790462770","url":"https:\/\/redleafauto.ca\/products\/siless-max-120-mil-butyl-sound-deadening-mat-30-sq-ft-heavy-duty-car-noise-vibration-dampener","provider":"Redleaf Auto","version":"1.0","type":"link"}