Thickness of coroplast for underbelly enclosure?

Lynn, ten mm is about half an inch, so it is an approximation. If you ask me to show you with thumb and forefinger how much is ten mm, I have to think for a few seconds. Ask for a half inch, and there is no delay.

Someday, we will all convert to metric -- much more logical. But those of us raised on the old system find it hard to change.

Coroplast is manufactured in metric sizes from 2 to 10 millimeter. My trailer has 4mm material. Not sure where all the 1/4" and 1/2" measurements came from.

I will of course be using aluminum stringers to support the coroplast. Sounds like quarter inch is adequate -- I want something tough enough to stand up to minor road debris, splashes off of wet pavement, etc.

I installed 1/4", and ended up also installing some angle aluminum strips between the frame rails to support it. The 1/2" stuff might be stiff enough to require less/no support, especially on a smaller trailer.

rhagfo wrote:
I used 1/4" and placed Reflectix bubble insulation on top of it.

Mine came factory like this. Also, all flooring, including bedroom floor, insulated nicely with Reflectix. Nice thing...if it does get wet for any reason, no harm to Reflectix.

Jerry

I'm sure mine is 1/4" factory installed..I know it's not 1/2".

Mine is 1/4 inch.

I used 1/4" and placed Reflectix bubble insulation on top of it.

The 1/4" is a very good cover.
It is strong but light weight
It is just for enclosing.

Insulation, heat source are more important