depends on the curve of the bay,but have a try at cuts to the back,the more the better.this does not allways work thougth.another way to do it is if you have a 5 sided bay fix the skirting in 5 pieces to line up with the panes of the bay.you will not get it back to the plaster and so will have to make up the differance with more plaster.
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!