[Formulajones]

That was more of an issue back East and pretty commonly seen when I lived in Ohio.

Out here in Arizona not so much of a problem when you have dew points in the single digits and 15% humidity. The mats themselves disintegrate from decades
of use while the trunk floor remains pristine.

[Shiny]

Originally Posted by Formulajones

That was more of an issue back East and pretty commonly seen when I lived in Ohio.

Out here in Arizona not so much of a problem when you have dew points in the single digits and 15% humidity. The mats themselves disintegrate from decades of use while the trunk floor remains pristine.

Same opinion. My rule of thumb when I got paid to think was if average RH is below 50%, risk for corrosion was negligible. Sure, if water sits, it will cause corrosion, but that's a different discussion. Condensation in the desert southwest can happen, but any condensate won't last long before it evaporates, even under a mat.

There is a "technical" thing called capillary condensation that can bite you when two surfaces are in contact, but like Formulajones, if the RH is 10 or 15%, even that scenario is unlikely.

Mike