Wire up before or after dot and dab plasterboard?

[spada01]

Extension currently underway and to be wired up soon. Should I dot and dab teh plasterboard and get the sparkie in to wire (chasing channels in the plasterboard, or is it better to wire before board fitting (and try to find sockets etc afterwards)?

 

[ericmark]

First fix is normally done before boards are fitted. Hence name.

 

[thomo27]

Wire before - install backboxes then the boarder can cut out the board to fit over the backbox

 

[riveralt]

Think about it.............

 

[spada01]

Cheers guys.

Seems easier to do it afterwards as you've just got to cut plasterboard to run wires, rather than chase into the walls, but I'll get the sparkie in first then.

 

[flameport]

Seems easier to do it afterwards as you've just got to cut plasterboard to run wires, rather than chase into the walls, but I'll get the sparkie in first then.

You don't chase into the walls.
The cables are clipped to the surface, and the plasterboard goes over the top.
That is the whole point of using plasterboard.

 

[Taylortwocities]

Otherwise you'd have channels up your nice smooth plasterboard.
You can fill 'em in as much as you like, but they'll crack.

Schedule:
Fix boxes at depth suitable to allow plasterboard + skim plaster
Run Wiring
Dot & dab
Plaster
Fit sockets etc, connect & test

 

[riveralt]

Cheers guys.

Seems easier to do it afterwards as you've just got to cut plasterboard to run wires, rather than chase into the walls, but I'll get the sparkie in first then.

You clearly didn't think about it then.... did you? If the rest of your planning for this extension follows the same logic then it will be costing you a lot more than it should.

So lets simplify it.
A: Clip cable direct to wall with backboxes in place. Line up plasterboard - mark position of backboxes and cut out - dot and dab board then skim.
or
B: Dot and dab board to walls. Mark out position of backboxes - cut out and fix to original wall. Chase out your new plasterboard so that you can run you cable - (extra work). Fill in said chase (extra work) then skim whole of board.

 

[spada01]

Thanks guys - cabling first seems very sensible so I'm going for that approach.

 

[ban-all-sheds]

Surely your electrician would have told you all of that?

Or the builder?

Please don't say that you're DIYing the whole thing, given that you appear to know SFA about any of it....

 

[Adam_151]

Wire before - install backboxes then the boarder can cut out the board to fit over the backbox

Sometimes they even get it right too , other times they cut it so big that the edge is miles away from the edge of the box and there is a gap round the accessory, and after chasing them to do something about it so you can secondfix the point you get told "Don't worry mate, we'll sort it later", so you shrug and put the accessory on, and notice later its all filled around with pollyfiller and painted and looks cack. And then all falls out when the fixed equipment goes on and the spur is pulled forward for flexing and testing...

Normally happens on those small domestic building projects that use what the yanks would call general contractors.... those guys who put the walls up, board them, skim them, paint them, tile them, fit the windows, etc, etc...

 

[Paul Brett]

You wire your circuits before any plasterboard is fitted hence the name 1st fix as eric mark pointed out, doing it after is unprofessional, will cost the electrician more time n money if hes gotta go chasing / cutting out plasterboard, when you 1st fix u normally fix capping straight to the block wall, no need to chase it in unless its a huge deep piece of conduit ur installing!

 

[Taylortwocities]

Mr Brett. That topic is FIVE YEARS OLD.

You should have had a warning of this before you dug up the undead. Its dangerous!!! Didn't you watch any zombie films??

PS Welcome to the forum.

 

[Paul Brett]

So what if the topic is 5 YEARS OLD!... Dot and dabbing hasn't just majically vanished has it? People still read these articles for advice on this,- im only trying to help, thats the general idea? -Maybe you should try doing the same instead of getting abusive..

 

[sparkwright]

He wasn't abusive.