Fixings

[chirpychippy]

I am currently relishing the opportunity of installing a double storey staircase.

Straight flite on to continous double winder terminating on a landing that isn't present then another straight flite onto another continous double winder onto a landing which "you guessed it" isn't there, it's a bit of a headache.

My question is....the property is one those thrown up in 5 minute new builds, all the walls are Dot and Dab onto Celcon Block.

Fixing Stair Strings to Celcons

I have tried Fischer Frame Fixings, they pull up then spin out. I tried traditional plug and screw, waste of time, I'm now onto Masonary Screws, drilling a 5mm hole into celcons and letting them self cut, but they are spinning aswell.

Run out of ideas - anyone please?

 

[carmanmemoranda]

Yes.

Walk away.

 

[RandomGrinch]

In my house, anything substantial has to go up with chemical fixings and studding.
Everything else just falls out!

 

[foxhole]

I am currently relishing the opportunity of installing a double storey staircase.

Straight flite on to continous double winder terminating on a landing that isn't present then another straight flite onto another continous double winder onto a landing which "you guessed it" isn't there, it's a bit of a headache.

My question is....the property is one those thrown up in 5 minute new builds, all the walls are Dot and Dab onto Celcon Block.

Fixing Stair Strings to Celcons

I have tried Fischer Frame Fixings, they pull up then spin out. I tried traditional plug and screw, waste of time, I'm now onto Masonary Screws, drilling a 5mm hole into celcons and letting them self cut, but they are spinning aswell.

Run out of ideas - anyone please?

DeWalt Aerated Concrete Anchors M8 x 12mm | Toolstation

Removable tension-free fastening for lightweight block. Spiral thread cuts a positive fit into the block with no spalling of the plastered surface. The interrupted thread ensures removal of waste material for easier installation. Simple and quick to install using allen keys. Approved for use in...

www.toolstation.com

Correct fixings required , this is one of many which hold in lightweight blocks , when I needed to bolt timber to them for roof I used threaded rod right thru .
Threaded rod also worked for wall hung toilet to blocks.