FLASLD Thermal Block Reflective Heat Shield Sheet 40x80 in — Adhesive-Backed Aluminized Insulation

FLASLD Thermal Block is an adhesive-backed aluminized heat shield sheet designed to reflect radiant heat and protect vehicle and home components from extreme temperatures.

Engineered from a flexible woven silica core with a durable aluminized surface and pressure-sensitive adhesive backing, this large-format thermal barrier offers a convenient, high-performance solution for insulating areas exposed to intense heat. The sheet is easy to trim and install, resists very high temperatures, and is sized to cover large panels, firewall sections, hoods, or household surfaces near ovens and heaters.

How does the FLASLD Thermal Block stop heat from damaging components?

The aluminized outer layer reflects the majority of radiant energy away from protected surfaces, while the woven silica substrate resists conductive and convective heat transfer. Together they form a physical barrier that maintains lower temperatures on the substrate side and shields vulnerable parts from thermal stress.

• Reflects up to 95% of radiant heat.
• High-temperature woven silica core withstands extreme heat.
• Aluminized finish provides a low-emissivity surface for better reflection.

Is installation difficult and what tools will I need?

Installation is straightforward thanks to the factory-applied adhesive backing—no special fasteners are required for many applications. For best results, clean and dry the mounting surface, measure and trim to fit, then press firmly to engage the adhesive; optional mechanical fasteners can be added in high-vibration areas.

• Peel-and-stick adhesive for quick application.
• Scissors or utility knife to trim to shape and size.
• Rubbing alcohol and a cloth recommended for surface prep.

What sizes and thicknesses are available and can I customize the sheet?

FLASLD offers multiple size options so you can choose a piece close to your project's needs and trim it to exact dimensions. The material thickness is consistent and robust enough for many automotive and household heat-shielding tasks.

• Available sizes: 12x12, 12x24, 12x40, 24x24, 24x40 inches.
• Thickness: approximately 0.032 inches (0.8 mm).
• Easy to cut for custom shapes and layered installations.

Where can I use this thermal barrier around a vehicle or in the home?

Its versatility makes the FLASLD Thermal Block suitable for protecting plastics, painted surfaces, hoses, and electrical connections in vehicles, as well as shielding cabinets, walls, and appliances in residential settings. It’s particularly useful wherever radiant heat or hot engine components threaten nearby materials.

• Automotive uses: hood liners, firewall patches, exhaust tunnels, and underside panels.
• Home uses: behind stoves, near water heaters, inside ovenside cabinets, or around furnaces.
• Can be layered or combined with other insulation for added protection.

Who is this for? Installers, automotive hobbyists, mechanics, fabricators and homeowners who need a flexible, high-temperature reflective barrier will value the FLASLD Thermal Block. It’s aimed at anyone wanting a do-it-yourself friendly, durable solution to reduce radiant heat exposure without professional installation—particularly useful for repairs, custom builds, and preventative protection on large surfaces.