mattress moisture barrier

There are three methods of heat transfer. Convection, conduction, and radiation. Reflectix has NO insulation value as far a convection or conduction goes. It reflects radiation - AND IT NEEDS AN AIR GAP in order to do THAT.

stevenal wrote:
OP asked about moisture barriers. Some affirmative responses above seem to be about something completely opposite to a barrier. A barrier sounds like a bad idea, since it may tend to condense or trap moisture where it's undesirable.

A barrier sounds like a bad idea to me too.

Another nod for hypervent.

When you look at the stuff 2 of us were talking about, it has a way to act as a barrier, as well as allow air flow.
I have the enkadrain with barrier side up, than Reflectix on top of that, than the mattress.

OP asked about moisture barriers. Some affirmative responses above seem to be about something completely opposite to a barrier. A barrier sounds like a bad idea, since it may tend to condense or trap moisture where it's undesirable.

Reflectix. Never had an issue with moisture.

Mike

Maybe I'm lucky, but I've never used anything like this stuff. I have the factory mattress with a 2 inch topper to make it a bit softer. I recently did lay down Relflectix just to insulate the bottom of the mattress against extreme cold, but other than that- nothing. I've never noticed any type of mold anywhere. Now I do keep a dehumidifier in the TC when not in use and it keeps it at about 50% humidity constantly, and I live in the VERY humid Houston area.

Few years back I used Drymesh. Similar to Hypervent but cannot find a U.S. Distributor anymore. Now use the pink or blue 4x8 foam board sold at Lowes or Home depot. Works and a lot cheaper than Hypervent.

I just read about the problem, and my enkadrain cost me $20.00 so I used it.
I also put a layer of that silver reflective isolation under the enkadrain

Never have and never had a problem. Maybe I don't have a problem because I have a standard RV mattress with a foam topper, not a foam mattress. That or it's because I always have a vent and window cracked so almost never have condensation on my windows.