Hello ng,

I've got a little project to add some grab bars. One is next to a
toilet, and they want it diagonal. Another is next to the shower stall
and vertical. The third is inside the shower and diagonal.

The house is in Oakland, CA. It has real 2 x 4's, lathe and plaster,
and tile in the shower.

Q1) Should I expect 16" on center framing?

When at all possible, I want to be fastening onto studs.

Q2) If not possible, then are toggle bolts the best way to go?

At home depot, they had "Glacier Bay" products that looked really
chintzy, and half of what was out there had been returned and re-taped.

Elsewhere, I've found "Delta" products that looked a little better.

I can order "Moen" products online, and they're a brand that hasn't made
me regret ever using them

Q3) What brand would you go with?

Finally, I want to get every bit of fastening power I can out of these,
and toggle bolts get slumpy if they have any play in them and poor
performers for handling the vertical load.

Q4) What in the world of adhesives might is use to promote a better
bond between the flange and the ceramic walls that might have 1/2" holes
drilled in it? Isn't there some chance that water could find its way in
if I don't put something goopy where I half 1/2" tunnels for the toggle
bolts? Off the top of my head, I was thinking of ordinary bathroom
caulk, epoxy, or silicon.

Thanks for your comment,
--
Cal