Insulated underbelly

[fredoe61]

I notice our 1 yo gray wolf TT has a fully enclosed underbelly with thick insulated covering. There is no access to any plumbing electrical or tanks. Is this a 4 seasons rig or is this just how they come these days?

 

[Scrapper]

No, it is not a 4 season trailer and that covering is nothing more than corrugated plastic called corroplast. It is the same thickness as a single layer corrugated cardboard box. There are only 2 or 3 true 4 season RVs.

 

[fredoe61]

No, it is not a 4 season trailer and that covering is nothing more than corrugated plastic called corroplast. It is the same thickness as a single layer corrugated cardboard box. There are only 2 or 3 true 4 season RVs.

I got my hand up in the hole where the low point drain is and its 2" insulation up in there its pretty heavy in fact and it looks to me this could eventually droop down. Its not a single sheet of plastic for sure.

 

[fredoe61]

No, it is not a 4 season trailer and that covering is nothing more than corrugated plastic called corroplast. It is the same thickness as a single layer corrugated cardboard box. There are only 2 or 3 true 4 season RVs.

As you can see the insulation ive pulled thru where the low point drains are. Its a thick blanket of insulation . Its so heavy you can see it dipping in the middle in the other pic. My concern is i have no access to anything to work on it if need be and the concern that the weight of this is gonna eventually pull it down as im going down the road. Its already dipping in the center.View attachment 204045View attachment 204046

 

[fredoe61]

As you can see the insulation ive pulled thru where the low point drains are. Its a thick blanket of insulation . Its so heavy you can see it dipping in the middle in the other pic. My concern is i have no access to anything to work on it if need be and the concern that the weight of this is gonna eventually pull it down as im going down the road. Its already dipping in the center.View attachment 204045View attachment 204046

Pics

 

[upflying]

I have the same "Corroplast" covering a thick coating of that expanding foam insulation.
No access to wiring, plumbing and tanks. Sounds like fun if something needs repair.

 

[fredoe61]

I have the same "Corroplast" covering a thick coating of that expanding foam insulation.
No access to wiring, plumbing and tanks. Sounds like fun if something needs repair.

Exactly. A friend of mine and long time rver looked under mine and told me good luck getting that back up if i ever have to take it down to get access under that thing.

 

[MT Biker]

With it sagging that much I would make sure you don’t have a leak and it is filling with water... I only mention this because a couple that we camp with often had this exact issue and the entire underbelly was filling with water.
Turned out to be a loose fitting, two of them to be exact.
One at the city water connection, the other on the line feeding the sink in there out door kitchen.
We poked holes in it to let all the water drain out, then it spent several weeks at a dealer getting repaired.

 

[Iwannacamp]

That don’t look any chloroplast I ever saw...looks more like what’s under a Mobile home to me.

You could get some light angle and cut to inside or outside width and run across the RV every 2-3 feet to help. Fastening would be the next challenge.

You could use something like this...



Available any pipe, valve & fitting supply and any electrical wholesaler.

 

[bikendan]

Takes more than a covered underbelly, to be a true 4 season RV.
Look at Arctic Fox or Outdoors RV for true 4 season RVs.

 

[Indy500]

Takes more than a covered underbelly, to be a true 4 season RV.
Look at Arctic Fox or Outdoors RV for true 4 season RVs.

Looks like a water leak to me

 

[Kimber45]

the pics are not even of cloroplast. looks more like a tyvec material with fiberglass insulation above. it. never seen that.

 

[Kimber45]

did you buy the unit new or used? looks like someone insulated and enclosed a trailer that did not come with a factory enclosed underbelly?

 

[BandJCarm]

That's not cloroplast. And it's not factory installed stuff, I'm betting. And it's wet, I'm also betting.

 

[MT Biker]

For all those thinking this is not factory installed go look under many Flagstaff Micro Lite or Rockwood Mini Lite trailers and you will see the same material.
Many Keystone trailers also have this same material.
It is like a heavy duty trash bag, my wife’s son has a Keystone Hideout (the one that had the leak that I posted earlier) and this is exactly what is installed.
The good part is that all you need once you cut it open is some gorilla duct tape to close it back up.

 

[Scrapper]

That is the woven nylon fabric. The same material that plastic feed bags and the cheap blue tarps are made from but in black color. The pics say more than words. I had a Timberlodge TT that had the same stuff but it was attached to the sub-floor with adhesive and didn't droop like fredoe61's. It looks like someone rented one of those foam insulation injectors you can get for insulating walls and just let it fill the cavity to overflowing. The cloroplast is mounted to the bottom of the frame supposedly to create a dead air space.

 

[dward51]

Coroplast looks like the stuff they make the yard signs out of (sort of like cardboard, but plastic instead). They also use a black UV resistant foam (think Great Stuff type foam) to seal around any penetrations in the coroplast, like those drain lines.

That is not what you have. Sounds like you are the original owner, so that may be how that model is built?

 

[fredoe61]

That's not cloroplast. And it's not factory installed stuff, I'm betting. And it's wet, I'm also betting.

Yes its factory and its not wet. Its just a plastic material with thick insulation above it this its heavy and thats the reason for the sag as there is no support under there. I guess im gonna have to manufacture some type of support under there or I can see this stuff coming down on me one of these days while im pulling it down the road. Its similar to what ive seen on mobile home underbellies.

 

[Indy500]

You should be able to use some type of strapping or maybe aluminum to go across the bottom side to side to support t

 

[Indy500]

Look at lowes or Menards, perforated metal plumbing strap. A roll is pretty cheap and has holes already in it , pull it tight and shoot some self tapping metal screws in each side on the frame