Design Engineering Spray-On Sound Deadener — 18 oz aerosol, paintable & moisture‑resistant damping

Design Engineering Boom Mat Spray-On Sound Deadener is an 18 oz aerosol that sprays a thin, paintable layer to reduce road and engine noise, rattles, and panel vibration in hard-to-reach vehicle areas.

When traditional peel-and-stick mats won't fit, a sprayable dampener makes sound control practical. This fast-drying aerosol covers up to 20 sq. ft., adheres to irregular surfaces, and forms a moisture-resistant coating that can be painted after roughly six hours—helpful for restorations, custom builds, and anywhere you want quieter, more solid-feeling panels.

How does this product reduce noise and vibration?

The formula bonds to metal and many interior substrates, adding mass and damping properties that dissipate vibrational energy. Instead of transferring panel flex into audible noise, the treated surface absorbs and converts that energy, making the cabin quieter and reducing annoying rattles.

• Creates a uniform damping layer across seams and curves.
• Can be applied in multiple thin coats for targeted performance.
• Improves mid- and low-frequency noise control compared with untreated metal.
• Helps stabilize loose panels to reduce clatter and squeaks.

Where should I spray it on my vehicle?

Spray-On Boom Mat is designed for areas that are awkward or impossible to fit with sheet products. Use it inside trunks, along door inner panels, fender wells, rear quarters, undercarriages, and wherever contours or obstacles prevent adhesive mats from laying flat.

• Trunk interiors and rear quarters to quiet road and cargo noise.
• Door panels and inner skins for cleaner audio and fewer rattles.
• Fender wells and engine bay-adjacent panels to reduce drivetrain noise.
• Undercarriage spots that need rust-sealing plus damping.

How long does it take to dry and can it be painted?

Surface tack-free time is quick, and the product reaches a paintable state in about six hours under typical shop conditions. Full cure and peak mechanical performance take longer, so follow recommended layering and drying intervals when building thickness.

• Paintable after approximately 6 hours depending on temperature and humidity.
• Apply thin, even coats and allow each layer to dry before reapplying.
• Avoid heavy wet coats that prolong drying and reduce adhesion.
• Good ventilation and moderate temperatures speed cure times.

Is this easy to apply and how much area will one can cover?

Yes—application is straightforward with the aerosol format: shake, spray, and build thin layers. One 18 oz can covers up to about 20 square feet when applied as recommended, making it efficient for spot treatments or partial-area projects.

• Aerosol delivers consistent mist for irregular contours and cavities.
• Use multiple light passes rather than one heavy coat for best results.
• Coverage estimates based on typical 8–12 mil total thickness in treated zones.
• One can is sufficient for focused areas like doors, trunk lids, or fender wells.

Who this is for: Design Engineering Boom Mat Spray-On Sound Deadener is aimed at DIY restorers, car-audio installers, classic-car owners, custom builders, and mechanics who need a sprayable, paintable damping solution for irregular or hard-to-reach surfaces. It suits anyone who wants to cut road and panel noise without wrestling with mats or padding—especially when corrosion resistance and the ability to paint over the finish are important.