Exploding bricks

[Chris Hex]

Hi,
I work in the Domestic market and get frustrated when sinking back boxes using an SDS. Every now and then I come across a house where the bricks explode/shatter when touched with an sds chisel. My solution so far has been to chain drill and remove with a scutch chisel, but its really time consuming. Does anyone have another solution. Someone suggested filling the hole with adhesive and gluing the back box in.
Cheers

Chris

 

[The Ghost]

Cement might be better.

 

[Chris Hex]

Cement might be better.

That is of course an option. Would that not be quite time consuming as well?

 

[The Ghost]

yeh but what else can you do? there is of course Toupret filler, very fast setting.

 

[telectrix]

get some dot & dab adhesive. mix a bit of cement with it.

 

[Chris Hex]

yeh but what else can you do? there is of course Toupret filler, very fast setting.

true

 

[Rpa07]

get some dot & dab adhesive. mix a bit of cement with it.

Uh oh!
Out come the chemists! Deja vu . . .

 

[colshaws]

cement works with bonding also,sends it off very quickly

 

[Midwest]

Close the doors, cover everything in dust sheets, and angle grind the holes out for the boxes. Then spend the next hour hovering up. Or spend a small fortune on a Metabo wall chaser Metabo MFE30 ASR25LSC 110V 110v Wall Chaser Kit with ASR25LSC 110V Vacuum - http://www.ffx.co.uk/tools/product/Metabo-Mfe30-Asr25Lsc-110V-4007430900029-110V-Wall-Chaser-Kit-With-Asr25Lsc-110V-Vacuum

See they are a bit cheaper now, hmmmm.

 

[Midwest]

Close the doors, cover everything in dust sheets, and angle grind the holes out for the boxes. Then spend the next hour hovering up. Or spend a small fortune on a Metabo wall chaser Metabo MFE30 ASR25LSC 110V 110v Wall Chaser Kit with ASR25LSC 110V Vacuum - http://www.ffx.co.uk/tools/product/Metabo-Mfe30-Asr25Lsc-110V-4007430900029-110V-Wall-Chaser-Kit-With-Asr25Lsc-110V-Vacuum

See they are a bit cheaper now, hmmmm.

Apologies being a bit flippant. Luckily for me, the area I work is predominately dot and dab walls, or kitchen refurbs where the walls always get a skim of plaster.

I invariable use a 115mm disc cutter, endure the dust and scotch out. Think those square hole cutters don't get good reviews here, but I'm often tempted to get one, for use on soft brick of course!

 

[Chris Hex]

Apologies being a bit flippant. Luckily for me, the area I work is predominately dot and dab walls, or kitchen refurbs where the walls always get a skim of plaster.

I invariable use a 115mm disc cutter, endure the dust and scotch out. Think those square hole cutters don't get good reviews here, but I'm often tempted to get one, for use on soft brick of course!

Thanks for the suggestion. I've tried the box cutters and got the same shattered brick plus lots of dust. I try a disc cutter.

 

[Chris Hex]

Thanks for the tips everyone

 

[Octopus]

be less aggressive ?????????????

 

[David M]

Fortunately because I do full re-furbs, I usually have some rapid set tile adhesive knocking around it sticks like s..t to most things, if its old stuff it sets in half a hour and it is cement based.

 

[David M]

be less aggressive ?????????????

Trouble is some cement and brick work just crumbles even with a little tap and often the bricks are quite loose so its difficult to get any type of secure fixing.
In these situations I just bash out so that all the back boxes sink deep enough, get all my chiselling out done. I then mass fill all the holes with rapid tile adhesive and push in place all the back boxes . A hour later you can go back to it drill through and screw back the boxes (if required) very easily.
The boxes are now securely fixed in place and the supporting brick work has been secured in the process, happy days.

 

[amlu]

pva on the crumbly bricks, wait 2 hours let it bond up, then mix some bonding with cement (5 parts to one or something), glue the back box in the hole, next day when it hardens fix with some wall plugs.

 

[Midwest]

Wot about the old fashion method, screws & rawplugs

 

[Rpa07]

Wot about the old fashion method, screws & rawplugs

And surface pattresses. It may become a trend. No more chases!

 

[Midwest]

And surface pattresses. It may become a trend. No more chases!

With Bluetooth mains supply connection, Happy Days

 

[David M]

Wot about the old fashion method, screws & rawplugs

Great if there is something to fix to

Ah... you live in Oxfordshire, you have posh bricks round your way, we just have the cheap old crumbly ones lol!