Conservatory Cavity Wall Query

[shaggie16]

Telectrix - so just so I am clear in my own mind with regards to seeing what products I can use - I can get the electrician to cut right through the thermalite into the cavity, and put the transformer there? That won't affect the strength of the wall or indeed the waterproofing? The transformer would be ok sat in the cavity like that?

If that's the case, is it also possible to mount the transformers in the cavity itself just under the windowboard? If one failed, I could easily remove the window board to have it replaced. I just assumed the cavity would get too damp to do that?

Once again I should point out that I am not planning on doing this myself, I simply want to know what products I can use so I can get the best choice.

 

[HandySparks]

However, as stated, I cannot find any LED fittings that are warm white and shallow recess.

Why not just fit G4 LED lamps to the fittings you've found. They're certainly available in warm white. Not sure about dimmable, you may have to experiment with some samples.

 

[tom79bmth]

Hiya will the transformers fit in a metal knock out box and put a blank on the front so you can access them

 

[shagbite]

that'd look pretty rough, to be honest mate.

 

[Engineer54]

If these fittings have already been purchased, then try and get them replaced at the store they were purchased from, as clearly they are not suitable for this installation. Replace them for full voltage fittings of whatever lamp type is available.

As the old saying goes, you can't fit a square peg into a round hole. You will always end-up with a real pig's ear of a job!!!

 

[telectrix]

but , the again, he's working with a dwarf wall in a conservatory. not like it's holding up much weight. nothing wrong with cutting right through the thermalite.

 

[Engineer54]

but , the again, he's working with a dwarf wall in a conservatory. not like it's holding up much weight. nothing wrong with cutting right through the thermalite.

Wouldn't that be destroying the integrity of having a cavity wall, ...there are after all 8 of them i believe?? I certainly wouldn't want to install TX's in the cavity. Far better to have a fitting that is suitable for it's location....

 

[shaggie16]

Thanks for the ideas. Nothing has been bought yet - I am not doing this job myself. I'm purely trying to get ideas of what will and won't work, so I can make sure that when I sit down with the electrician, I know all ideas have been thought about.

So, LED bulbs - good idea. Cutting through the thermalite could also work.

With regards to the mains voltage fittings, my concern here is recess depth. But are we saying then, that I shouldn't limit my thoughts to shallow recess because of the wall contruction, as cutting deeper into the thermalite isn't an issue? If the fitting is IP rated would it matter if it went all the way through the thermalite into the cavity?

A greater allowable depth would certainly open the world of opportunity with regards to which fittings would work.

 

[Engineer54]

Thanks for the ideas. Nothing has been bought yet - I am not doing this job myself. I'm purely trying to get ideas of what will and won't work, so I can make sure that when I sit down with the electrician, I know all ideas have been thought about.

So, LED bulbs - good idea. Cutting through the thermalite could also work.

With regards to the mains voltage fittings, my concern here is recess depth. But are we saying then, that I shouldn't limit my thoughts to shallow recess because of the wall contruction, as cutting deeper into the thermalite isn't an issue? If the fitting is IP rated would it matter if it went all the way through the thermalite into the cavity?

A greater allowable depth would certainly open the world of opportunity with regards to which fittings would work.

Don't be bloody stupid!! Why do you want light fittings on such low walls anyway, why not wall lights at a suitable height on the existing wall the conservatory is attached too?? If you're dead set on having these low mounted lights, purchase suitable full voltage fittings rather than LV ones that require a TX, or fittings that incorporate an integral TX!!

 

[shaggie16]

I did say in my initial post that I assumed things cannot go into the cavity! So the question remains then. Whatever fitting is used in these low level lights, will, at least in part, need to be notched out of thermalite block behind the dot and dab plasterboard. So WHAT DEPTH is permissable to notch out of the block to incorporate the recessed fittings?