Sustainable fastening in concrete hollow blocks for handrail

[Månskensmuschen]

Hello!

We recently moved into a house from '52 where the staircase to the upper floor is missing a handrail. Since we have small children, it feels important to install something to prevent slipping/falling risks.

The tricky part is that the walls are made of concrete hollow blocks, and I don't know what to use for fastening to get the handrail to stay up over time.

Other mounted items like the TV and mirror I have managed to attach securely with facade plugs as shown in the picture. The difference is, however, that the handrail is subjected to daily and varying loads, which I guess will "wear" on the concrete.

The handrail is about 3.5 m, and there will be 5 wall brackets.

Does anyone have experience with this material and a qualified guess on how to proceed?

 

[larsbj]

Rubber expander is probably the best.
Possibly with a spacer sleeve so that the expansion goes deeper into the wall.

Gummiexpander Herrljunga Ledstångsfabrik med Skruv Size: M10- 2.G-exp10 (bygghemma.se)

922771 Ejot Rubber Expander Rawl M8 x 30 mm, 25-pack | Proffsmagasinet

 

[Månskensmuschen]

Thanks for the great answer! I've completely overlooked these in my search on Google. I looked at spacer tubes for further reinforcement, and according to the description, you should "cut to the desired length."

Maybe a silly question, but is there anything to consider or base it on to know what the right length is? I assume the goal is for the rubber expander to attach to a layer in the hollow block that is further back. Should you then just drill and push the rubber expander with the spacer tube as far as it will go?

 

[tergo]

Anchoring Compound - Biltema.se

 

[sinuslinus]

What kind of grip do you have?

 

[Månskensmuschen]

It is not decided yet, but I'm thinking of something like the picture. The left one has a central screw and the right one has three pre-drilled holes. However, I suspect it will be difficult to drill three holes in such a small area in concrete hollow blocks.

 

[sinuslinus]

Yes, you can use that with a center screw.