KILMAT Butyl Sound Deadening Mat 100 mil (2.5mm) 25 ft² kit — 24 pre-sized sheets, thermal & vibration damping

KILMAT Extra 100 mil is a self-adhesive butyl sound-deadening mat designed to cut road and vibration noise in vehicles while adding thermal insulation without complex tools.

Engineered for car audio enthusiasts and DIYers, this 2.5 mm (100 mil) laminated mat delivers a balance of weight, thickness and tackiness to reduce panel resonance and improve cabin acoustics. Sold as a 25 sq ft (2.4 sqm) kit of pre-sized sheets, KILMAT Extra lets you cover doors, floors, trunks and roof sections with material that conforms to contours and stays in place once rolled down.

How does KILMAT Extra 100 mil reduce road and vibration noise?

The butyl core and aluminum foil facing combine to damp metal panels and absorb mid-to-low frequency vibrations that cause buzzing and rattles. Applied directly to vehicle surfaces, the mat changes the panel’s resonance characteristics so less sound is transmitted into the cabin.

• 100 mil (2.5 mm) thickness increases mass and damping compared with thinner sheets
• Butyl formulation converts vibration energy into heat rather than sound
• Foil facing adds thermal reflection and protects the adhesive layer
• Embossing pattern flattens when properly installed, signaling correct adhesion

What’s the easiest way to install these sheets in my car?

Preparation is the key: clean and dry the metal, measure and trim sheets to fit, then press and roll them down firmly. The product is self-adhesive and user-friendly so no special adhesives are required; a roller ensures full contact and smooth foil surface for best performance.

• Wipe mounting surface with isopropyl alcohol and let it dry
• Cut sheets to shape with scissors or a utility knife, removing sharp corners
• Peel protective liner, align, press, then roll to eliminate air pockets
• Check foil embossing — smooth surface indicates correct installation

What are the product dimensions, weight and coverage details?

KILMAT Extra arrives as 24 sheets sized for easy handling and precise placement. The kit covers 25 square feet (2.4 square meters) total and each sheet measures approximately 250 x 400 mm (15.9 x 10.3 inches), with a nominal thickness of 100 mil (2.5 mm).

• Total coverage: 25 sq ft (2.4 sq m)
• Sheet count: 24 sheets; sheet size: 250 x 400 mm (15.9 x 10.3 in)
• Nominal thickness: 100 mil / 2.5 mm
• Material weight: approx. 0.68 lb per sq ft (3.2 kg per sq m) for effective damping

Will this add significant weight or change fit and finish?

The material is intentionally dense for damping but remains lightweight enough for most installs without affecting vehicle handling. Sheets are thin and flexible, so they conform to contours and fit beneath trim panels when applied correctly, preserving reassembly and interior clearance.

• Designed for interior panels, trunks, doors, and floors without major fit changes
• Low-profile 2.5 mm thickness keeps panels close to factory position
• Self-adhesive bond minimizes need for mechanical fasteners
• Embossed foil guides proper rolling to keep a professional finish

Who is this for? KILMAT Extra 100 mil suits car owners improving audio clarity, installers reducing panel vibration, and DIY hobbyists who want a straightforward upgrade to cabin quietness. It’s ideal for anyone seeking a reusable, easy-to-handle sound-deadening solution that balances thickness, adhesion and coverage without professional-only tools.