Description
Stinger RKO12 RoadKill Overkill 6mm Self-Adhesive Foam Damping Mat 12 Square Foot
The Stinger RKO12 RoadKill Overkill is a dense 6mm self-adhesive closed-cell foam damping mat covering 12 square feet (approximately 81cm x 137cm) from a single roll. Designed to eliminate vibrations from door trims, interior plastics, and panel gaps, it can also be cut to shape for use as speaker gaskets. It works as a compression foam layer between two surfaces and can be used alone or layered over Stinger RoadKill Expert for a complete dual-layer treatment.
Product overview
RoadKill Overkill addresses a different noise source to traditional constrained-layer damping sheets. Rather than bonding to bare metal to stop panel resonance, the Overkill foam is placed between interior trims, door cards, and body surfaces where plastic-to-plastic or plastic-to-metal contact creates buzzing, squeaking, and rattling. The spongy closed-cell construction compresses between the two surfaces and absorbs the vibration energy before it becomes audible noise.
The pressure-sensitive self-adhesive backing bonds to clean surfaces with light hand pressure and requires no spray adhesive, heat gun, or additional tools. Surfaces must be cleaned with wax and grease remover or methylated spirits before application. Full adhesion strength develops after 24 hours. The foam can also be cut to create custom speaker gaskets between the speaker basket and mounting baffle, improving acoustic sealing and reducing bass leakage at the speaker mounting interface.
Used over Stinger RoadKill Expert CLD sheets, the Overkill adds a compression foam layer to the constrained-layer treatment for a more complete two-stage solution covering both bare metal panel resonance and trim-to-panel contact noise.
Features and benefits
6mm dense closed-cell foam construction: The 6mm foam compresses between interior panels and body surfaces, absorbing the vibration energy from plastic-to-plastic and plastic-to-metal contact that causes rattles, buzzing, and squeaking in door cards and trim pieces.
Eliminates interior panel rattles: Applied between door trims, pillar trims, and body surfaces, the foam cushions and absorbs contact vibrations that degrade sound quality and create annoying rattles during driving.
Improves speaker bass response: Reducing panel flexion and vibration allows speakers to push more acoustic energy into the cabin rather than losing it to panel movement, improving bass response and overall clarity.
Speaker gasket material: The 6mm foam can be cut to any shape for use as a speaker gasket between the speaker basket and mounting baffle, improving the acoustic seal and reducing bass leakage at the mounting interface.
Self-adhesive pressure-sensitive backing: Bonds directly to clean surfaces with light hand pressure. No spray adhesive, heat gun, or additional tools are required for application.
12 square foot coverage per roll: A single 32" x 54" sheet provides 12 square feet of coverage, typically sufficient for two full door cards or equivalent interior panel treatment in most vehicles.
Compatible with RoadKill Expert: Used over Stinger RoadKill Expert CLD damping sheets, the Overkill adds a compression foam layer for a complete two-stage noise treatment addressing both bare metal resonance and trim contact vibrations.
Technical specs
| Specification |
Detail |
| SKU |
RKO12 |
| Brand |
Stinger / RoadKill |
| Type |
Self-adhesive closed-cell foam damping mat |
| Sheet Count |
1 roll/sheet |
| Coverage |
12 sq ft (32" x 54" / approximately 81cm x 137cm) |
| Minimum Thickness |
6mm |
| Damping Weight |
0.25 lb/ft² |
| Peel Adhesion Strength |
38.24 lb/in (after 24 hours) |
| Weight |
1.27kg |
| Adhesive |
Self-adhesive, pressure sensitive |
| Applications |
Interior panels, door cards, trims, speaker gaskets |
Frequently asked questions
What is the difference between RoadKill Overkill and RoadKill Expert?
RoadKill Expert is a mass-loaded constrained-layer damping sheet applied directly to bare metal panels to reduce resonance. Overkill is a compression foam placed between panels and trims to absorb vibrations from plastic-to-plastic or plastic-to-metal contact. They address different noise sources and are most effective when used together.
How much area does one RKO12 sheet cover?
One RKO12 provides a single 32" x 54" sheet (approximately 81cm x 137cm) with a total coverage of 12 square feet, typically enough for two full door cards or equivalent interior panel coverage.
Can Overkill be used to make speaker gaskets?
Yes. The 6mm foam can be cut to shape and used as a speaker gasket between the speaker basket and mounting surface, improving the acoustic seal at the speaker-to-baffle interface.
How do I apply RoadKill Overkill?
Clean the application surface thoroughly with wax and grease remover or methylated spirits. Peel the backing and press the foam firmly onto the surface with hand pressure. No heat or additional adhesive is needed. Allow 24 hours for full adhesion to develop.
Is RoadKill Overkill suitable for use on bare metal panels?
Overkill is a compression foam most effective between two surfaces such as a trim panel and inner door. For bare metal damping, RoadKill Expert CLD sheets are the appropriate product. Overkill can be combined with Expert for a complete two-layer treatment.
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