Dynamic Control DynaDeck is a waterproof, 3-part composite carpet replacement combining the high thermal insulation capabilities of Dynaliner with the low-frequency exhaust noise rejection of DynaPad. The top layer is a durable, deep-twist, embossed vinyl grain that matches the textured floor pattern of vintage cars. DynaDeck does not absorb water and is ideal for use in street rods, Jeeps, convertibles, and vintage sports cars where durable, waterproof floor material is desired. For optimal results, install DynaDeck over Dynamat.