Couple of overboarding snags.

[FreeD]

Overboarding a L&P ceiling today...when I boarded into the alcove I was left with a cut across 2 joists with an over hang of apprx 300-400 mm and nothing to fix into the corners (no joist) so the board was flexing in the alcove corner...what do you do in this situation? remove some l&p and fix a betten to the wall to screw into? grip fill? leave and bond it out?

Aslo on the otherside the joist was completely rotten in the alcove, could barely get a fixing in it.?

cheers

 

[oasis]

used to use grip fill and a prop but now i use the tined spray foam!

 

[essexandy]

used to use grip fill and a prop but now i use the tined spray foam!

And put a few screws through the lathes as well.

 

[FreeD]

What spray foam is that? not expanding?

Is this a cowboy way to do it? surely movement form above could cause it to the board to pop off?

 

[beddy]

grip fill and prop it and chuck a few screws in to catch the laths. it wont go anywhere

 

[FreeD]

ok thanks mate and do the same onto the rotten bit of joist only about 300mm wide

 

[beddy]

if its not taking too much weight of the board then yeah. if not you might want to cut a hole in the existing ceiling and put a new noggin in.

 

[pwi]

I have to say we mostly pull l-p cellings down or put in a faulse one there's just to much weight on it if its not done right because let's face it we are all guilty of just fireing the screw through the lathe .

 

[S a plastering]

if its a bedroomceiling you could always stitch a piece of timber in if you could get in the loft but like the others i just use gripfill

 

[PhilPlaster]

I have to say we mostly pull l-p cellings down or put in a faulse one there's just to much weight on it if its not done right because let's face it we are all guilty of just fireing the screw through the lathe .

im with you on that one

 

[Nisus]

Same as above, gripfill then prop it up then fire some screws in at 45degrees one way then 45degrees the other way,
oh & a few in the lathes ;D
It'll never come down

 

[FreeD]

Ok both parts are in the alcove small cuts...I will use adhesive tmw before skimming just for peace of mind. I'm ripping down the downstairs ceiling but upstairs is in a good enough condition to overboard.

This false ceiling you mention have you got a link so i can read up?

thanks

 

[MFW]

I reckon foam is just as strong as gripfill if used correctly.

Try sticking 2 offcuts of board together - squirt some foam on one piece, give it 30 seconds to expand, and then squash the two pieces of board together to squeeze the air bubbles out of the foam. Give it 20 minutes and there's no way you'll break the bond.

 

[Nisus]

I have to say we mostly pull l-p cellings down or put in a faulse one there's just to much weight on it if its not done right because let's face it we are all guilty of just fireing the screw through the lathe .

To much weight?
If you use big enough screws mate weight shouldn't be an issue.(unless you eat as much as kebab king ;D )
I had to use some 75mm screws overboarding l&p few weeks back as 50's only just touched the joist

 

[kebab king]

Hopefully there will be some copper pipe above, thats always good for getting a fixing in.

 

[Nisus]

Hopefully there will be some copper pipe above, thats always good for getting a fixing in.

Yes there is that, or a nice gas pipe usually by the chimney breast
Failing that you could always find a few cables to whazz a screw into ;D

Only ever hit 4 pipes : luckily it was water ;D

 

[MFW]

Cables are good, the thicker the better. They help the screw fuse to the copper to give a really firm hold. :

 

[irish_spread]

marmalade is the stickiest substance known to man

 

[Pug]

mix it with marmite and it goes off quicker.

 

[PhilPlaster]

mix it with marmite and it goes off quicker.

with a pinch of msg

 

[topmark]

Cables are good, the thicker the better. They help the screw fuse to the copper to give a really firm hold. :

Makes you jump like f$*K though