No-nails conduit to wall?

[cmj306]

Could I use no nails (or similar) to fix conduit to the chased out wall?

 

[securespark]

It's being plastered over?

 

[cmj306]

Yeah, will be plastered over when it's done.

 

[PrenticeBoyofDerry]

Is there a reason why you would want to fit conduit in a wall chase?

 

[Adam_151]

If it'll grip it then I don't see why not. Normally these: https://www.edwardes.co.uk/en/products/niglon-20mm-galvanised-flat-crampet are used. Another way if you are doing it at home (and tehrefore are doing the making good yourself) is to put a few long screwss in at angles other side that hold it back to the chase, but stick out. Put your bonding coat on most of the chase, leave it to go off, then wind out the screws and finish making good

 

[deadshort]

What happens if it reacts with the plaster and causes cracking at a later stage because the conduit has moved or become loose ?
I would not risk it

DS

 

[DetlefSchmitz]

I did it 10 years ago in our extension, and it shows no signs of problems yet! It doesn't take a lot - just enough places to ensure it's all below the surface. The plaster holds it it place afterwards.

 

[ban-all-sheds]

What happens if it reacts with the plaster and causes cracking at a later stage because the conduit has moved or become loose ?

Why not use plaster, or a gypsum based filler, to hold it into the chase? No reaction worries then.

 

[JohnW2]

Why not use plaster, or a gypsum based filler, to hold it into the chase? No reaction worries then.

Maybe it's just me, but in my experience, that's easier said than done - at least in my hands, the cable has an 'orrible tendency to 'jump out' through blobs of plaster or filler.

If one uses a solvent-free version of "No Nails" or whatever, I would think it extremely unlikely that there would be any adverse 'reactions'.

Kind Regards, John

 

[ban-all-sheds]

Maybe it's just me, but in my experience, that's easier said than done - at least in my hands, the cable has an 'orrible tendency to 'jump out' through blobs of plaster or filler.

The OP is fixing conduit.

 

[JohnW2]

The OP is fixing conduit.

I realise that, and I haven't tried it, but I would have suspected that a similar problem might arise with conduit to what I have experienced trying to hold cable in place with blobs of plaster/filler. Given the greater rigidity of conduit, it might work better, but I feel that there still might be problems.

Do I take it that you have experience of successfully holding conduit in place in a chase with blobs of plaster/filler?

Kind Regards, John

 

[ban-all-sheds]

Yup.

Although....

It is more a case of making sure that the conduit is firmly bedded into something, so that everything is solid when filling the chase and making good. I usually use a form of mechanical fixing to hold the conduit into the chase, in the form of leaving a few "nibs" at the sides of the chase that make the conduit a tight fit there.

 

[JohnW2]

It is more a case of making sure that the conduit is firmly bedded into something, so that everything is solid when filling the chase and making good. I usually use a form of mechanical fixing to hold the conduit into the chase, in the form of leaving a few "nibs" at the sides of the chase that make the conduit a tight fit there.

Indeed. In the case of 'stubborn' cables (and I guess I would do the same with conduit), as a last resort I've been known to temporarily attach a few bits of wood across the chase, with some sort of padding underneath.

Kind Regards, John

 

[333rocky333]

When i used to do it, i just put a few nails in on an angle to hold the pipe, then, blobs of bonding, 1 at top and bottom and 1 in middle, then once dry pull the nails out.
A full size bag of bonding used to be cheaper than no nails etc

 

[phatboy]

Metal banding, plugs and screws does the job for me, then a covering of hardwall ready for the plasterer