24in x 70in Under Carpet Insulator Lite

The Design Engineering 24in x 70in Under Carpet Insulator Lite is a composite heat and sound barrier engineered to reduce cabin noise and manage underbody temperatures in automotive applications. This lightweight insulation sheet measures a half-inch thick and covers a substantial 24-by-70-inch area, making it ideal for sound dampening under carpeting in sedans, trucks, and performance vehicles where noise reduction and thermal management improve the driving experience.

Constructed from a composite material blend of polyester and fiberglass, this under-carpet insulator combines thermal isolation with acoustic absorption. The half-inch thickness strikes a balance between effectiveness and minimal height penalty, allowing it to fit under standard carpet without requiring major modifications to door panels, trim, or interior geometry. At 3.8 pounds, the material adds negligible vehicle weight while providing measurable sound reduction from road noise, engine vibration, and external traffic—factors that accumulate into noticeably quieter cabin environments during highway driving or daily commutes.

This product suits DIY enthusiasts, restoration shops, and builders who prioritize cabin comfort without installing bulkier sound-deadening systems. The gray composite finish blends naturally with factory underbody components and is compatible with most carpet adhesives and installation methods. Whether suppressing tire roar in a daily driver, improving acoustics in a custom build, or managing heat transfer on a performance platform, this Design Engineering product delivers practical thermal and acoustic benefits at a lightweight footprint.

Under-carpet insulators occupy a middle ground in automotive acoustic treatment—lighter and more economical than full-coverage deadening mats, yet effective for drivers who want a baseline reduction in road and engine noise without extensive interior disassembly. The 24-by-70-inch size covers most of a sedan or compact truck floor, and installers can cut or overlap sheets to fit specific layouts and maximize coverage where noise ingress is greatest.

TacticalSurplusUSA carries this Design Engineering insulation sheet as part of our automotive upgrade inventory, allowing builders and restoration crews to source sound and thermal management solutions alongside tactical and performance accessories for modern vehicles.