|
|
Member
Posts: 22
Location: Bellevue, NE | I have an Exiss trailer with aluminum c-channel beams/supports/ribs, that I plan on insulating. Will use the rigid foam board between the ribs, but what do I use IN the ribs? Regular fiberglass? Thought about the spray foam stuff but it seems like it would take an awful lot. Trying to keep weigh to a minimum too. Thanks! |
|
| |
|
Expert
Posts: 5870
   
Location: western PA | When we built a LQ in an Exiss, we fastened furring strips to the "C" channels and insulated behind them against the skin. The aluminum will conduct the cold to the interior surface if a thermal break isn't used. The furring strips made it easier to install the various interior coverings as well. |
|
| |
|
Member
Posts: 22
Location: Bellevue, NE | Thanks for the reply, Gard, but I'm still confused. We plan on installing furring strips so we can hang paneling. But, won't the furring strips be attached in front of the c-channels and the foam (foam installed against outer skin and between the c-channels)? I know something needs to fill that space inside the c-channel so that we have a continuous thermal barrier, but don't know what to use to fill those cavities. |
|
| |
|
Expert
Posts: 5870
Location: western PA | The furring strips will form the thermal break, the "C" studs will be a conductor of cold to the interior without the studs. We used rigid foam, aluminum coated on both sides in between the studs, and a second piece glued to the first which brought the insulation's surface flush with the studs' facing. Tape and expandable foam was used to seal the edges and fill any gaps between the edges and the framing. The foil faced insulation is an excellent vapour barrier, and by taping all the seams, there was no chance of warm air contacting the cooler outside metal skin. |
|
| |
|
Member
Posts: 15
Location: Ridgeville, SC | Gard, do you happen to have a picture of this step? I have the same type trailer and my inner vision isnt working too well. Thanks!  |
|
| |
|
Expert
Posts: 5870
Location: western PA | Sorry; no |
|
| |
|
Veteran
Posts: 203
Location: Lander WY | Cant you simply foam the channel with spray foam?? |
|
| |
|
New User
Posts: 1
Location: NW Washington | I did a careful job with furring strips, foil encapsulated foam board and foam spray to insulate the camper shell on my truck for my dogs. I made double walled window coverings, filled the bed walls with Styrofoam and got a 4 in foam pad for the floor. It didn't do a bit of good as the heat and cold still came through as if a door was open. Consider all the avenues of heat transfer before you put in a lot of work. |
|
| |
|
Member
Posts: 22
Location: Bellevue, NE | I'm going to try to post a picture/drawing of what we were thinking it would be like. We'll see how it goes. It is going to be "attached as a file to this thread after posting". We do plan on insulating the floor, the front of the gooseneck rise, and bottom of the bed area (under mattress).For the walls, foil faced rigid foam board will be glued between the studs, to the exterior skin. Batt insulation or spray foam insulation will fill the cavity in the stud. Foil tape will seal all seams and enclose the front openings on the studs. Furring strips will then be attached to the front of all of the insulation (screwed into the edges of the c-channel studs), and then paneling will be attached to the furring strips. There will be a gap between the backside of the paneling and the interior side of the insulated wall, wherever there are no furring strips though. But, it will be fully insulated and sealed behind this air gap so I am thinking that should not be a problem.So, does this sound about right, or am I missing something still?Thanks! |
|
| |
|
Veteran
Posts: 203
Location: Lander WY | ......There will be a gap between the backside of the paneling and the interior side of the insulated wall, wherever there are no furring strips though. But, it will be fully insulated and sealed behind this air gap so I am thinking that should not be a problem.So, does this sound about right, or am I missing something still?Thanks! An air gap would be fine- OR -- you could use foil backed bubble wrap taped with aluminum foil tape- this would help further insulate the LQ and stop air infiltration through the wall. |
|
| |
|
Member
Posts: 22
Location: Bellevue, NE | Great idea! |
|
| |
Insulating C-channel
