{"product_id":"automotive-sound-deadening-mat-197-mil-16-3-sqft-heat-noise","title":"Automotive Sound Deadening Mat 197 mil 16.3 sqft - Heat \u0026 Noise","description":"\u003cp\u003eIn this review of the Automotive Sound Deadening Mat I tested the 197 mil, 5mm foam sheets sold as a 16.3 ft2 kit. The bottom line: this kit is best for DIYers who want a low-profile, waterproof insulation layer that reduces engine and road noise while cutting radiant heat transfer to the cabin. Installation is straightforward thanks to the self-adhesive backing, and the closed-cell PE foam with an aluminum surface does a credible job of muffling vibration and reflecting heat without adding bulk.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003e197 mil thickness:\u003c\/strong\u003e The 5mm sheet thickness provides a balance of compression and cushioning to absorb vibration without distorting panels.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eWaterproof aluminum surface:\u003c\/strong\u003e The outer layer keeps moisture off metal parts, resists scratches, and prevents rust and corrosion in treated areas.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eClosed-cell PE foam:\u003c\/strong\u003e The compressible foam formula isolates sound and reduces transmitted vibrations from engine and road sources.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSelf-adhesive backing:\u003c\/strong\u003e The supplied waterproof glue makes cutting and stick-on installation quick and clean on hoods, trunks, and body panels.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh heat reflection:\u003c\/strong\u003e The laminate blocks up to 98% of radiant heat transfer, helping keep engine bay heat from accelerating paint aging.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eWide temperature range:\u003c\/strong\u003e Rated to perform from about -40F to 300F, the material handles typical automotive thermal cycles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis kit is aimed at car owners and hobbyist installers seeking an affordable way to reduce cabin noise and engine heat without professional tools. It suits people working on hoods, firewalls, trunks, wheel arches, and interior floors who want a thin, waterproof, vibration-absorbing liner.\u003c\/p\u003e\n\u003cp\u003eIt is less appropriate for customers who need the thickest possible mass-loaded sound deadener or those expecting heavy structural damping from a single thin layer. If extreme low-frequency noise reduction or multi-layer professional sound systems are the goal, a heavier bedding or additional layers may be required.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eEffectively reduces engine and road noise and improves in-car audio by limiting panel resonance.\u003c\/li\u003e\n \u003cli\u003eWaterproof aluminum coating protects metal surfaces and slows hood paint aging from heat.\u003c\/li\u003e\n \u003cli\u003eEasy to cut and apply with the self-adhesive backing, making DIY installation practical.\u003c\/li\u003e\n \u003cli\u003ePerforms across a wide temperature range for reliable all-season use.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n \u003cli\u003eSome buyers may find the 5mm thickness thinner than expected for heavy-duty vibration damping.\u003c\/li\u003e\n \u003cli\u003eAdhesion and perceived stickiness can vary by surface prep and temperature during installation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eClosed-cell PE foam with aluminum surface\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e197 mil (5mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eCoverage\u003c\/td\u003e\n\u003ctd\u003e15 pieces, total 16.3 ft2 (single piece 1.09 ft2)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eTemperature range\u003c\/td\u003e\n\u003ctd\u003e-40F to 300F\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eBacking\u003c\/td\u003e\n\u003ctd\u003eSelf-adhesive waterproof glue\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003eKey benefits\u003c\/td\u003e\n\u003ctd\u003eSound deadening, heat reflection, vibration absorption\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 197 mil, 16.3 ft2 sound deadening mat is a practical, value-focused choice for DIY automotive insulation. It combines waterproof protection, heat reflection, and measurable noise reduction in a thin, easy-to-install format, making it a sensible upgrade for hobbyists and daily drivers who want a quieter cabin without major expense.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this work under the hood to reduce engine heat?\u003c\/strong\u003e\u003cbr\u003eYes. The aluminum surface reflects radiant heat and the foam layer helps slow heat transfer, which can reduce hood paint aging and lower heat reaching the cabin.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the adhesive strong enough for long-term use?\u003c\/strong\u003e\u003cbr\u003eWhen surfaces are clean and dry, the waterproof self-adhesive provides strong bond; adhesion can vary with surface prep and installation temperature.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan it be cut to fit wheel arches and small panels?\u003c\/strong\u003e\u003cbr\u003eYes. The closed-cell foam is easy to trim with scissors or a utility knife for custom fitting around panels and tight areas.\u003c\/p\u003e","brand":"KOIKEY","offers":[{"title":"Default Title","offer_id":46485405597915,"sku":"B09MLTQGZG","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61QthBmyvhL._AC_SL1500.jpg?v=1739299536","url":"https:\/\/gearmusthave.com\/products\/automotive-sound-deadening-mat-197-mil-16-3-sqft-heat-noise","provider":"GearMustHave","version":"1.0","type":"link"}