Electrical boxes - how far above the blockwork?

How far above the blockwork should a lightswitch/socket box protrude?

12mm? 15mm? I'm starting to wire an extension and want to use deep boxes, I need to know how deep I need to sink them to avoid upsetting the plasterer.
Reply to
Dave
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The obvious solution surely would be to ask the plasterer, then you cant go wrong but if you dont want to ask then put at 15mm protrusion, plaster is about 18mm deep but may be a little less or a little more depending on the quality of the blockwork and the quality of the plasterer. If the boxes are a little to deep yuo can always get longer screws

Reply to
Mike Taylor

"Mike Taylor" wrote in message news:cpuij1$51s$ snipped-for-privacy@news8.svr.pol.co.uk...

18mm of plaster ? maybe in places where the wall is very uneven but on a flat wall it should be more like 5mm

LJ

Reply to
in2minds
5mm thick on blockwork? Not a chance. The technical specification for undercoat plasters from Carlite gives 11mm plus 2 mm finish coat. In a one coat plaster onto Block or broick then again a minimum of 13mm Onto plasterboard then 2-3 mm thick
Reply to
Mike Taylor

On Fri, 17 Dec 2004 11:57:08 +0000, Dave strung together this:

If it's going to dry lined then 25mm is the norm. This means you can just screw a 25mm box straight on the wall. If it's going to be wet plaster then around 15mm protusion is about right.

Reply to
Lurch

On Fri, 17 Dec 2004 11:57:08 +0000, Dave strung together this:

If it's going to dry lined then 25mm is the norm. This means you can just screw a 25mm box straight on the wall. If it's going to be wet plaster then around 15mm protusion is about right.

Reply to
Lurch

Reply to
Dave

See these buggers that double post replies !!! :-) Sorry, couldn't resist the urge again. :-)

Reply to
BigWallop

On Sat, 18 Dec 2004 05:45:13 GMT, "BigWallop" strung together this:

I was waiting for someone to say something. OK, I'm a clueless f****it, but I don't use OE so it's not too bad!

In my defence, there was a temporary glitch with the Pipex news servers. Posts used to appear in 5-10 minutes. Last night they didn't appear after an hour so when this sort of thing happens I cancel the originals and resend, unfortunately Pipex had already sent them. I think they must have been working on the servers for a couple of hours last night as after this little delay my posts started appearing instantly.

So there you go.... ;-)

Reply to
Lurch

LOL !!! That's your excuse, and you're sticking to it. :-))

And what's wrong with using Outlook Express, apart from.............Oh f*ck it......there's to many things to list here. :-)

Reply to
BigWallop

On Sun, 19 Dec 2004 06:58:16 GMT, "BigWallop" strung together this:

Quite right. ;-)

See previous response....

Reply to
Lurch

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