1st fix boxes in old brickwork

[Seanofakkad]

hi guys. First post here so any help would be appreciated.

Simply. Has anyone got any ideas or recommendations for mounting metal knockout boxes into old brickwork?

I’m thinking of using expanding foam to get the box level, flush and secure as the old brickwork and mortor is crumbling away on one of my jobs.

Does anyone have a better product of solution?

 

[Taylortwocities]

Dont use expanding foam.

Make a mix up of plaster bonding coat, and throw a little bit of cement powder in to the mix.
Set your box square in the brickwork snuggled in the cement/plaster mix (don’t forget the water!)..
That mix will set in half an hour. Once it’s rock hard, run a 6mm masonry drill through a couple of the back holes and secure with wall plugs and screws.
Sorted.

 

[Andy78]

Drywall bonding adhesive mixes up smooth and hardens up really solid. I wouldn't even consider foam.

 

[Leesparkykent]

Quick drying cement, Butter the back and sides and put it in. Knock it up so it's semi dry. once set drill, plug and screw the box.

 

[pirate]

Gripfill! Dod on the back, press into place, wedge with wee bits of wood or plastic til it sets. Bombproof!
Gripfill Adhesive 350ml - https://www.NoLinkingToThis/p/gripfill-adhesive-350ml/10261?tc=JA6&ds_kid=92700023141675590&ds_rl=1249484&ds_rl=1245250&gclid=EAIaIQobChMIuO20x62m2gIVz7DtCh1MlgBWEAQYASABEgJgQfD_BwE&gclsrc=aw.ds&dclid=CKvsrc2tptoCFUMC0wod8PkJqQ

 

[Squid]

Hammer and bolster, piece of ----, jeeeez basic install stuff the next question will be routing cables behind skirting boards ;o)))))

 

[pirate]

Don't you dare! Behind skirtings is the work of the Devil!

Mind you...it does get you out of a tricky place now and again

 

[Rpa07]

Quick drying cement, Butter the back and sides and put it in. Knock it up so it's semi dry. once set drill, plug and screw the box.

Wasn’t that what Wile E Coyote used against the roadrunner - made by ACME as I recall.
Acronym for A Company that Makes Everything if you didn’t know!

 

[pirate]

Oh, and actually, the next question will be "Wiring a replacement bathroon extractor fan"

 

[Ib≤In≤Iz]

Wait until he comes across lath and plaster

 

[Rpa07]

That’s the day you wonder whether you should be an electrician - don’t stand back and look and don’t touch the level.

Wait until he comes across lath and plaster

 

[Ib≤In≤Iz]

That’s the day you wonder whether you should be an electrician - don’t stand back and look and don’t touch the level.

It's awful stuff isn't it.

 

[telectrix]

Wait until he comes across lath and plaster

is that the lath and plaster in the shed with a welder and a 10kW hot tub?

 

[Rpa07]

That’s Tels weekend sorted then!
More Sangria Mrs Tel!

is that the lath and plaster in the shed with a welder and a 10kW hot tub?

 

[westward10]

Six posts, bang thread derailed.

 

[Rpa07]

Six posts, bang thread derailed.

Really, what did you expect - though I can‘t even remember the question or the thread title.

 

[Rpa07]

Six posts, bang thread derailed.

Really, what did you expect - though I cant even remember the question or the thread title.

 

[telectrix]

back on topic.

knock a brick out. fill hole with whatever you preder. xpany foam, plaster, dot & dab snot. get apprentice to sick fingers either side of box till it sets. chop off fingers. sorted.

 

[Rpa07]

See @westward10 - the question gets answered early on then we have 4 more pages of inane chat!

 

[telectrix]

well, it's a forum, not an IET seminar. what do you expect after beer o'clock on a friday, a papal election?