3 replies to this topic

[Barko1]

I'm switching from an F150 to a F250 that has higher bed rails and requires material under the FWC to boost it up. Two questions, how much clearance is needed between the cabover and the cab to allow bed twisting etc.? And any recomendations on what and how much material coverage is needed underneath. Right now I have some 2x6 laid flat but they don't cover the entire floor, am I better off with plywood, or does it not matter. Gracias

[simimike]

I've read on another forum(RV.Net) that some folks are using a 4X8 sheet of rigid insulation. This is the foil backed compressed fiberglass type. An added bonus is a insulated floor. You can buy this at the home center.

Cheers,

Mike

[Southern Gent]

I raised my Granby 2" to clear my Aftermarket side rails.

It was suggested to me to build a 2x4 base with support around the base and with cross members. Issue relieving all stress off center of plywood base. I have questioned the use of " Insulation " as support. By it's Nature it gives and can compress. I suspect it could offer enough movement to cause a problem with Turn Buckles.

[pods8]

Barko1, I don't know I threw out the same inquiry a bit back and no one really knew for sure. I've just left mine alone for now as there were some folks running similar gaps (~1.5").

I've read on another forum(RV.Net) that some folks are using a 4X8 sheet of rigid insulation. This is the foil backed compressed fiberglass type. An added bonus is a insulated floor. You can buy this at the home center.

Cheers,

Mike

Oh this is an interesting idea. I wonder how well it would hold up on its own with the ridges of the truck bed and bottom of the camper. Also how this would factor into turn buckles loosening up due to some potential compression...

That said it does have me intrigued, I've currently only got about an inch and half cab over clearance so stuffing a 1" think sheet under my rig wouldn't lift it over my cab much. I wonder how much difference it'd make on the temp of the bottom. I'll have to dwell on this. I am planning to camp a bit in cold with it set up stock to get a baseline. I've been wondering about covering the uninsulated area's of the bottom of the camper that are in the truck bed with reflexive insulation or some foam board down the road as well (however there might be some concern about water getting trapped between the insulation and wood).