Forum Discussion
tatest
Aug 06, 2015Explorer II
On a FR Sierra, the exterior walls are foam sandwiched between luan on inside (very thin plywood) and luan + sheet plastic on the outside. Your anchor has to grip the foam without going through the wall.
I'm not sure about the thickness. It could be as little as one-inch total thickness, particularly the outside wall of a slide out.
There is some aluminum square tubing used around the perimeter of the wall, with additional vertical braces, and sometimes some horizontals to frame openings, but not the full framing like a house. This tubing may go skin to skin (for a one-inch wall) or may be only on the outside, so as to leave some foam insulation on the inner (I know this as a Winnebago practice). Don't count on finding usable studs.
Stick-ons work for something not too heavy, but can peel the coated paper trim off the luan.
Factory mounted stuff uses wooden or metal plated imbedded in the wall. You could try to find those more solid spots.
I'm not sure about the thickness. It could be as little as one-inch total thickness, particularly the outside wall of a slide out.
There is some aluminum square tubing used around the perimeter of the wall, with additional vertical braces, and sometimes some horizontals to frame openings, but not the full framing like a house. This tubing may go skin to skin (for a one-inch wall) or may be only on the outside, so as to leave some foam insulation on the inner (I know this as a Winnebago practice). Don't count on finding usable studs.
Stick-ons work for something not too heavy, but can peel the coated paper trim off the luan.
Factory mounted stuff uses wooden or metal plated imbedded in the wall. You could try to find those more solid spots.
About RV Tips & Tricks
Looking for advice before your next adventure? Look no further.25,111 PostsLatest Activity: Feb 18, 2025