Skirting matching and installation

Hello, I'd be grateful for any advice people have for this issue. I'm trying to remove these terribly transitioned skirtings and replace with matched new skirting board like the more simple skirt coming off the stairs in the first picture.

In picture one the stair skirting on the stairs is an inch/25mm thick and projects about 10mm from the line of the plaster. To successfully match the skirt will I have to cut away the plaster back to the brick and make the new skirting out of 1" or 25mm thick hardwood to get a good match and transition? Or is there a cheaper way? A thinner skirt on battens or whatever?

If the plaster needs taken back should I use an angle grinder or a bolster?

Keen to try and make the new skirting myself (including retrofitting a stair skirt to make a badly butchered Victorian flat conversion stair to look a bit less of a mess). It would be could to know what terminology to use to describe the older original skirting to the left of both pictures below in case I get in professionally matched. Anyone know the term for a simple beaded skirting like that in the left of both pics?

Looks like you have some new torus skirting fitted like the type DIY stores sell. Wickes,B&Q ect although there will be slightly differences in design and measurements..

You can pay local timber machine shop to make skirting matching a design. Can't remember cost but something like £50 tool setup and x amount per metre.

Grinder inside creates lot's of dust. You can use a multi tool to cut smaller areas of plaster while holding vacuum cleaner pipe to collect dust, then chisel off the wall plaster if that's what you want to do.
Why hardwood Vs pine or MDF?

First thing you need to do is completely remove all paint from a section (a couple of inches or so) so's you can see exactly what the required profile is. The professional solution is to take a pattern of the clean skirting and then spindle mould plain boards to the desired profile. However if doing it DIY, once you've cleaned the section you may be able to produce a fair representation by using a combination of flat boards topped with bull-nose or half-round section. You may find that 'half-round' is lacking in depth (ie it isn't a full half-round) but this can be augmented by fitting a thin flat section to it's back and reprofiling to suit

Wayners said:

Looks like you have some new torus skirting fitted like the type DIY stores sell. Wickes,B&Q ect although there will be slightly differences in design and measurements..

You can pay local timber machine shop to make skirting matching a design. Can't remember cost but something like £50 tool setup and x amount per metre.

Grinder inside creates lot's of dust. You can use a multi tool to cut smaller areas of plaster while holding vacuum cleaner pipe to collect dust, then chisel off the wall plaster if that's what you want to do.
Why hardwood Vs pine or MDF?

Click to expand...

Add another £300 or £400 if they don't have the cutters in stock though and need to have them custom made.

Or someone with a cnc like a Yeti could machine it?