Coving Ceiling with different dips.

[Paul Shand]

Hi. I thought I would like to cove this old house. I bought some polystyrene coving from B&Q and a tube of coving adhesive.
I watched a few videos on YouTube. I made myself an 82mm square block and proceeded to mark the corners in view of pinging a chalk line on the wall and ceiling. However, I then discovered the corners were not square.

Some dip down and some rise up with dips somewhere near the middle of all four walls.. So, I started to measure the dips which are somewhere between 15mm deep all round. With such a variation, I realised that if I put panel pins all round the wall to shelve/support the coving, the gap at the top being sometimes the whole way across or just small spot to attach the top to, I am kind of stumped at present.
I also realised I need to remove the ceilings wallpaper border to expose a firm surface to eventually attach to top/ceiling part of the coving to.
Any ideas would be much appreciated!

 

[foxhole]

You could drop the coving 30mm or so below ceiling and a have shadow effect, I put led’s in mine.The lightweight cardboard covered coving is better than the polystyrene, looks like plaster coving.

 

[Paul Shand]

How did you attach the ceiling edge, with what?

 

[foxhole]

How did you attach the ceiling edge, with what?

It’s only attached to wall.

 

[Deleted member 292770]

trouble is itll be 30mm in parts and only 15mm in other parts.
15mm is nothing really, have you actually offered a length up to see if it will somewhat follow the contours.

 

[Paul Shand]

Still, it needs to be firmly attached the ceiling edge due to the flimsy nature of the polystyrene. I am thinking maybe dot and dab, line it up nicely, let it harden, then fill it in nicely. Can't think of any other way.

 

[Deleted member 292770]

that method would work with plaster coving, not sure how the lightweight cove would react with pb adhesive though.
I didn’t think any of the modern lightweight covings were ‘flimsy’ .
I fit loads of it and its very rigid.

 

[stevethespreader]

Hi. I thought I would like to cove this old house. I bought some polystyrene coving from B&Q and a tube of coving adhesive.
I watched a few videos on YouTube. I made myself an 82mm square block and proceeded to mark the corners in view of pinging a chalk line on the wall and ceiling. However, I then discovered the corners were not square.

Some dip down and some rise up with dips somewhere near the middle of all four walls.. So, I started to measure the dips which are somewhere between 15mm deep all round. With such a variation, I realised that if I put panel pins all round the wall to shelve/support the coving, the gap at the top being sometimes the whole way across or just small spot to attach the top to, I am kind of stumped at present.
I also realised I need to remove the ceilings wallpaper border to expose a firm surface to eventually attach to top/ceiling part of the coving to.
Any ideas would be much appreciated!View attachment 249870

Hi. I thought I would like to cove this old house. I bought some polystyrene coving from B&Q and a tube of coving adhesive.
I watched a few videos on YouTube. I made myself an 82mm square block and proceeded to mark the corners in view of pinging a chalk line on the wall and ceiling. However, I then discovered the corners were not square.

Some dip down and some rise up with dips somewhere near the middle of all four walls.. So, I started to measure the dips which are somewhere between 15mm deep all round. With such a variation, I realised that if I put panel pins all round the wall to shelve/support the coving, the gap at the top being sometimes the whole way across or just small spot to attach the top to, I am kind of stumped at present.
I also realised I need to remove the ceilings wallpaper border to expose a firm surface to eventually attach to top/ceiling part of the coving to.
Any ideas would be much appreciated!View attachment 249870

 

[stevethespreader]

To level the ceiling up and take the dips out you could get a straight edge and some bonding and screed the edges ive done it to a few ceilings you will then have to skim the ceiling , also if you have the opposite to dips where the ceiling bows down you can scribe the top of the coving to fit

 

[Deleted member 292770]

scribe coving? like remove some of the feature line?

 

[tell80]

which room is in the pic? Is it GF or FirstFloor? investigte to find out why its dropping more than 15mm. thats more than a 15mm droop.
do you intend to live with that ceiling paper becasue nows the time to remove it if you want a fresh ceiling finish.

 

[stevethespreader]

scribe coving? like remove some of the feature line?

Yes bud if theres a bulge in the ceiling "EDIT" same way as you would scribe a skirting board on the floor

 

[darrington]

To level the ceiling up and take the dips out you could get a straight edge and some bonding and screed the edges ive done it to a few ceilings you will then have to skim the ceiling , also if you have the opposite to dips where the ceiling bows down you can scribe the top of the coving to fit

That's exactly what I would do as well Steve, a far better looking job.

 

[stevethespreader]

That's exactly what I would do as well Steve, a far better looking job.

Hi tony yes it's the bottom of the coving that catches the eye isent it? As long as thats straight

 

[darrington]

Spot on Steve.