Dynaliner 1/4" is a self-adhesive closed-cell rubber sheet for cutting heat and blocking water in cars. The dense cell structure gives it near-zero air infiltration, so it insulates without soaking up oil or water, and it resists crushing and tearing. It is meant to go on top of Dynamat Xtreme rather than replace it, and the 1/4" sheet suits floors, roofs, underhood areas and fiberglass enclosures. Buyers rate it highly for ease of install and heat control; the main trade-offs are the single-sheet coverage and the need to buy a sound deadener separately.
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Buyers rate Dynaliner 1/4" very highly, praising its easy installation and its effect on heat and road noise when layered over Dynamat. Complaints are few and mostly about coverage per sheet.
Dynaliner is a lightweight automotive thermal insulator. It is a soft, self-adhesive closed cell rubber that can be used on top of Dynamat Xtreme. The 1/4" thickness suits the floor, roof, underhood and fiberglass enclosures.
Thousands of cells are packed very close together, which leaves near zero air infiltration. This is what lets it reduce heat and resist oil and water. Because it does not hold water, it does not promote rust or mildew the way most under-carpet padding and thermal insulators can.
The material is crush and tear resistant. Dynaliner also comes in 1/8" and 1/2" thicknesses, and the thickest one the space allows is the one to use.
