Help with coving

[goodmow]

I am going to put up some coving in a newly decorated room and need a little advice.
I am going to use polystyrene coving with the paper finish on it,and the precut corners you can buy.
Should i put up the corner pieces first or the straight pieces?
Also when i have finished can i use filler on the joins and rub it down to get an invisible join or should i use caulking from a gun?
Any other tips would be greatly received thanks in advance.

 

[goodmow]

Has anybody got any advice for me on this subject?

 

[Third_Eye]

What make is the coving ? Is it soft material ? Is it hard material ?

 

[goodmow]

It is the polystyrene with paper finish that they sell in most diy stores.

 

[masona]

Should i put up the corner pieces first

Yes and I always temporary use nails into the wall at the correct height distance from the top of the ceiling & the bottom of the coving to rest the coving onto as this will stop the coving moving at the wrong angle.

 

[Third_Eye]

It is the polystyrene with paper finish that they sell in most diy stores.

Follow "masona" advice.

Though to be honest nobody recomends this type of coving as it is not hardwearing.

Most use the Gyproc Coving as it is hardwearing.

In terms of filling. Then i am afraid the material is nuturally flexible. Therefore on joints, no matter what you use to fill it with, will awlays eventually crack as the nature of the product you are using.