How to fix heavy item to cavity wall?

[veedee]

I'm trying to fix this bath belt..

https://www.uksmobility.co.uk/relaxa-bath-belt-lift

It weighs 11kg (although it feels heavier) and I wanted to ask what would be the best fixing for this?

The belt bath will be fixed to a cavity masonry wall which has been tiled

Also, what would be the best fixing for a solid wall?

 

[bernardgreen]

It weighs 11kg

then add the weight of the person using it ""Maximum User Weight: 20 Stone""

It requires a very secure fixing, do the suppliers provide any information ?

 

[23vc]

As above, I’d expect that to come with fixings or specific instructions.
If not, I’d say m10 bolt/through bolt kind of thing (several)

 

[noseall]

I wouldn't like to rely upon friable block to hold that thing. It would likely take some kind of stud and ply frame to secure it.

 

[bernardgreen]

From a website ( to save me typing it )

https://www.independent4life.co.uk/relaxa-bath-lift-back-plate-for-stud-wall-fixing.html

If fixing the Relaxa Bath Lift to a studded or non solid wall this back plate must be used.
The lifting weight of the bath lift is up to 127kg (280lbs) requiring the bath lift to be robustly secured to the wall.
When installing on a studded wall, or a wall not of a solid construction, the chassis back plate of the Relaxa Bath Lift and the wall plate must be used on the bath side.
The back plate should be used to spread the load on the rear side of the wall, and secured with screwed rods through the wall.
Care should be taken to ensure the rods finish flush with the nuts inside the unit, otherwise the belt could be damaged when the bath lift is used.

When fitted to a block built wall 6 rods went through the wall and had nuts and load spreading washers on the back side of the wall.

Also from experience ensure there is some way for the user to call for assistance in the event the device failing to lift the user out of the bath.

 

[veedee]

@bernardgreen I am not 100% certain the wall is a cavity one. I know that the house was originally constructed using solid walls.

However it was extended in parts and then pebble dashed.. so it is difficult to tell

However from the instructions
https://www.practicalbathing.co.uk/wp-content/uploads/2017/12/Relaxa-basic-install-guide-PDF.pdf

It appears that they do not distinguish between a solid and cavity wall and they are suggesting the use of Fischer bolts

Could someone link me to a product I can pick up at screwfix or toolstation please?

 

[veedee]

Bearing in mind I am not 100% certain if the wall is solid or cavity, would the following product be sufficient?

https://www.screwfix.com/p/fischer-...rc=aw.ds#product_additional_details_container

 

[bernardgreen]

I am not 100% certain if the wall is solid or cavity,

If I was fitting this then I would first drill an exploratory hole to find out exactly what the wall was made of before deciding on the method of fixing.

 

[veedee]

If I was fitting this then I would first drill an exploratory hole to find out exactly what the wall was made of before deciding on the method of fixing.

Great advice. Thank you.

Yesterday, I contacted Fischerto get their thoughts

and they recommended the

Fischer Duopower Nylon High Performance Plug 8 x 40mm
https://www.toolstation.com/fischer-duopower-nylon-high-performance-plug/p47504?store=C9&utm

It has a load of 0.62 per plug along with stainless steel screws.

6 in total will be required

 

[veedee]

The wall is solid

After some research, I want to use throughbolts, however as this will be used in a bathroom, will zinc plated bolts be adequate in a bathroom?

The instructions call for a 6mm fixing and it says 80mm minimum. Which size throughbolt would be idea in this case?

 

[veedee]

The wall is solid

After some research, I want to use throughbolts, however as this will be used in a bathroom, will zinc plated bolts be adequate? Potential rust?

The instructions call for a 6mm fixing and it says 80mm minimum. I am confused on which size throughbolt would be idea in this case?

 

[ivixor]

I would put a downward slant on the fixings so the load isn't pulling them directly out of the wall.