Purchased a System Cado unit 50 years ago; recently moved and I am rehanging it in my new house. I have a questions that, hopeful, someone can answer. But first an explanation of what I have for context.
Each section is the same. It comes with 2 rails (see picture 1) that have pre-cut holes at approximately a 45 degree angle.
Beechwood doweling pins on the back of the shelf supports are exactly adjusted to the diagonally bored holes in the rails. Slide in the support bracket and set a shelf on top of it. The underside of the shelf has 2 pre bored holes on either side that are set on top of the vertical dowels in the support brackets. (See picture 2).
Similarly, a cabinet (see picture 3) has a set of 3 doweling pins on the back that slip into the diagonally bored holes on the rails.
Each rail has 4 holes in it for attaching to the wallboard. If there is a stud behind the rail, then I plan to use either a #10 or #12 – 2 1/2″ steel wood screw. The rails are 3/4″ thick, and (yet to verify) the wallboard is 1/2″ thick. This would give me 1 1/4″ into the stud, or a bit less if the wallboard is 5/8″.
If there is no stud, then I will use 3″ long toggle bolts with either a 3/16″ or 1/4″ wing dependent on the rail hole size from previous installations.
So each rail will have either 4 wood screws in it, or 4 toggle bolts securing it to the wall. I have 3 sets of rails for 3 sections of the overall wall unit.
For this new house, I plan to install these 3 sections (each 2 rails with units on them) side by side. So the left rail of the middle section would be right next to the right rail of the section to its left. Ditto for the right rail of the middle section. By chance, this middle section has 5 holes/rail, not 4. The 3 middle holes are offset from the 2 middle holes on the rails with 4 holes.
But, the top and bottom rails holes are directly next to each other. Based on the hole diameters, the 5 hole rail will have a 3/16″ toggle bolt in it, and the 4 hole rail a 1/4″ toggle bolt. The rails are 1 3/8″ wide. Doing the math, there would only be 13/16″ of wall board between the 1/2″ hole drilled for the 3/16″ toggle bolt, and the 5/8″ hole drilled for the 1/4″ toggle bolt.
I am concerned that the separation of only 13/16″ between these holes and toggle bolts might be too close and compromise the integrity of the wallboard at the top and bottom of these adjacent rails.
Is this too close, and so I need to find another solution? Or is it ok?
My thanks in advance for taking the time to read this. I am hoping someone can provide feedback on my question. or even a pointer to a document that might provide this type of technical information.
Replies
Use these:
https://toggler.com/products/snaptoggle-heavy-duty-toggle-bolts-304-stainless-steel-channels
To me they are a more firm mount as well as the ability to remove the screw w/o the wing sliding down the wall.
As far as the top and bottom holes, could you move the mounting holes of a pair? Does the cab or shelf location cover where that would be?
Worst case, if you feel that this system will be too much for toggle bolts, make up some good looking laterals that you would fasten to mainly studs in the wall.
Sorry, am trying to reply on my phone and can’t really get a good look at your pictures.
I have a similar system, but with metal rails and hanger clips.
If the vertical rails have 2 rows of holes, you should be able to install the shelf or cabinets supports in either row, allowing one rail to support sections on both sides.