Layering Sealants: Durability & Longevity ??

Old Rattle Flat

New member
Conventional wisdom seems to indicate that sealants (Klasse, Zaino, EX-P, etc, etc) can last from 90 to 180 days (3 – 6 months). What are your theoretical thoughts about the following (I’ll use Klasse as the example, but fill in any name you like)???:)



a) Do sealants start to break down over time (3-6 months?), similar in concept to the idea that oil in your crankcase will breakdown over time, even if you don’t drive your car. The first layer of AIO would last 3-4 months by itself. A layer of SG results in a total of 4-5 months, and a second layer of SG would bring the total to 5-6 months, in that each layer offers some additional protection to the previous layer; however, at some point, some layers start to fail and it’s necessary to start over from scratch. OR,



b) Do sealants have an amazingly long half-life, like plastic in a landfill they go on forever? The layer of AIO would last for 3-6 months. By topping with a layer of SG, the duration becomes 6-9 months, and the second SG layer even longer. At this point, would putting a layer of EX-P on every 60 days would protect the underlying coats of AIO and SG, which would then last the life of the car?
 
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