{"product_id":"design-engineering-boom-mat-spray-on-sound-deadener-18-oz-4-pack-sprayable-noise-heat-damping-for-tight-cavities","title":"Design Engineering Boom Mat Spray-On Sound Deadener 18 oz 4-Pack — Sprayable Noise \u0026 Heat Damping for Tight Cavities","description":"\u003cp\u003e\u003cstrong\u003eDesign Engineering Boom Mat Spray-On is a spray-applied sound deadening and thermal barrier that reduces road noise, vibrations and rattles in hard-to-reach vehicle areas.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for tight cavities, irregular panels and locations where sheet products can’t reach, this aerosol formula adheres to metal and many uncoated surfaces to quiet vehicles and insulate against heat. Each 18-ounce can delivers a durable coating that resists cracking, can be layered for increased performance and becomes paintable within hours. VOC-compliant nationwide, it’s suitable for automotive, marine and other vehicle applications where reducing noise and thermal transfer matters.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Boom Mat Spray-On reduce road noise and vibrations?\u003c\/h3\u003e\n\u003cp\u003eThe product forms a flexible, damping layer that absorbs vibrational energy and interrupts noise transmission through body panels. Multiple coats increase mass and damping for thicker, quieter coverage.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSprays into crevices and contoured areas where sheet mat cannot conform\u003c\/li\u003e\n  \u003cli\u003eFlexible finish prevents brittle failure that can transfer noise\u003c\/li\u003e\n  \u003cli\u003eApply in layers to increase coverage and damping performance\u003c\/li\u003e\n  \u003cli\u003eRated to tolerate elevated under-hood and underbody temperatures\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhere should I apply it on my vehicle for best results?\u003c\/h3\u003e\n\u003cp\u003eTarget zones include trunk cavities, inner fender wells, door interiors, rear quarters and body panels — places that radiate road and engine noise or vibrate frequently. Use it wherever access is limited or where a sprayed contour-fitting coat is preferred.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTrunk and wheel wells to dampen road and tire sounds\u003c\/li\u003e\n  \u003cli\u003eDoor and quarter interiors to stop panel buzz and rattle\u003c\/li\u003e\n  \u003cli\u003eUndercarriage and engine bay areas for heat and noise management\u003c\/li\u003e\n  \u003cli\u003ePatchy or irregular surfaces where roll-on mats won’t sit properly\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow long before I can paint over it and how durable is the finish?\u003c\/h3\u003e\n\u003cp\u003eThe coating dries sufficiently to accept paint in about six hours under typical conditions, allowing fast turnaround for cosmetic or protective topcoats. Once cured it stays flexible, resists chipping and helps protect metal against corrosive elements.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePaintable after approximately 6 hours of dry time\u003c\/li\u003e\n  \u003cli\u003eRemains flexible to avoid cracking or flaking with panel movement\u003c\/li\u003e\n  \u003cli\u003eHelps shield substrate from moisture, reducing rust risk\u003c\/li\u003e\n  \u003cli\u003eRated to withstand temperatures up to 300°F (approx.)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow much area will a pack cover and how should I store it?\u003c\/h3\u003e\n\u003cp\u003eOne can covers roughly part of the job; a full 4-pack is useful for several areas or a more comprehensive install. Store cans in a cool, dry place and note the two-year shelf life from the manufacturer date stamped on the can bottom.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eApproximate coverage: about 20 square feet per stated quantity as guidance\u003c\/li\u003e\n  \u003cli\u003eBest to apply multiple thin coats rather than a single heavy pass\u003c\/li\u003e\n  \u003cli\u003eVOC-compliant formulation for sale throughout the United States\u003c\/li\u003e\n  \u003cli\u003eTwo-year shelf life; check manufacturer date on the can base\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: Enthusiasts, installers and DIYers who want a sprayable solution to quiet and insulate vehicles in areas that are not practical for sheet mats. It’s a practical choice for car restorations, performance builds, sound-system installs or anyone seeking to reduce rattles, road noise and heat transfer without extensive disassembly.\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: Can I use Boom Mat Spray-On on painted surfaces?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It adheres best to clean, uncoated surfaces; painted areas should be scuffed or stripped for optimal bonding.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Boom Mat Spray-On safe for high-temperature areas?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — it tolerates elevated temperatures (up to about 300°F) and functions as a thermal barrier.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Design Engineering","offers":[{"title":"Default Title","offer_id":67585845362873,"sku":"B088SNMFVS","price":142.59,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0822\/3765\/3177\/files\/design-engineering-boom-mat-spray-on-front-can.jpg?v=1790478610","url":"https:\/\/redleafauto.ca\/products\/design-engineering-boom-mat-spray-on-sound-deadener-18-oz-4-pack-sprayable-noise-heat-damping-for-tight-cavities","provider":"Redleaf Auto","version":"1.0","type":"link"}