Siless Liner 157 4mm PE Foam Sound Deadening Roll — 36 sq ft, Self-Adhesive Heat & Vibration Barrier

This high-density, closed-cell PE foam mat is designed for automotive insulation and sound deadening. Offered as a single roll covering 36 sq ft, Siless Liner 157 combines lightweight construction with waterproof performance and a peel-and-stick adhesive layer to make installations straightforward. It’s engineered to help control cabin temperatures, minimize road and engine vibration transmission, and resist moisture and odors for long-term durability.

How does Siless Liner 157 reduce heat transfer in a vehicle?

Siless Liner 157 works primarily as a radiant heat blocker thanks to its closed-cell structure and thermal barrier properties. The foam traps air, slowing conductive heat flow, while the mat’s dense composition interrupts radiant heat paths from the engine bay and exhaust areas.

• Thickness: 157 mil (4 mm) provides a thermal buffer between heat sources and cabin panels.
• Closed-cell PE structure resists heat conduction and moisture uptake.
• Effective at lowering radiant heat transfer from engine and exhaust areas.

Will this product help reduce road and panel vibration?

Yes — while not a heavy mass-loaded barrier, Siless Liner 157 dampens vibration and reduces rattles by interrupting panel-to-panel resonance. Its compressible foam layer absorbs and disperses energy, improving acoustic comfort without adding significant weight.

• Compressible foam reduces panel resonance and high-frequency rattles.
• Adhesive backing bonds to metal and interior surfaces for stable damping.
• Lightweight solution that won’t overload vehicle panels or trim.

How easy is it to install and maintain Siless Liner 157?

Installation is straightforward: clean the surface, peel the liner’s release paper, and press the adhesive side to the target area. The foam is flexible and can be trimmed with standard tools; a roller helps ensure full adhesion but isn’t required for smaller jobs.

• Self-adhesive backing for peel-and-stick application on clean, dry surfaces.
• Flexible and compressible — conforms to curved panels and irregular shapes.
• Waterproof, odorless material that resists mold and moisture buildup.

What are the product specifications and operating limits?

The roll ships as a single-piece self-adhesive mat sized to cover 36 ft², ideal for floors, doors, roofs, trunks, or firewall areas. It’s rated to handle typical automotive temperature ranges and matches rubber foam performance up to elevated temperatures noted for polymer foams.

• Thickness: 157 mil / 0.157 in / 4 mm.
• Coverage: 36 square feet per roll; roll dimensions ~15.74 x 330.7 inches.
• Waterproof closed-cell PE foam with factory-applied adhesive layer.

Who is this for? Siless Liner 157 is suited to car owners, DIY enthusiasts, and professional installers seeking an affordable, lightweight thermal and acoustic upgrade. It’s a practical choice for people who want to reduce cabin heat and noise without the weight and cost of heavier sound-deadening materials. Use it on doors, floors, trunks, firewalls, and interior panels when you need a moisture-resistant, flexible insulation layer that’s easy to cut, position, and adhere.