Screwing into exterior walls

[srobbins]

I'm thinking of putting some towel rods in my class C, to be connected to the wall the bathroom shares with the exterior. My 4 year old unit is constructed of that RV composite multi-layered material (whatever the inside is, foam, fiberglass exterior).

Can anyone suggest what kind of screws and/or anchors to use in this case? Thanks in advance.

 

[Kirk]

Screwing into exterior walls

I would use the type of screw that has the plastic insert that you plug into the hole first. I have used them in my class A with that same wall construction. Drill the holes such that it takes a slight tap to set the plug all of the way in so that it is flush with the wall.

 

[hertig]

Screwing into exterior walls

That works pretty good if there is nothing (solid) behind the wall. If you luck out and find a stud, a regular wood screw works better.