Home DIY

Is that on the bay? Looks like an internal 90 mitre if so scribing it is a better option.

I'm finding this frustrating because it's something that is easy to show people but tricky to explain by writing it down because there are lots of little tricks that add up to make the finished job. Plus I'm writing this on a phone

Until you have the joint cut you want the skirting to be slightly over length, you'll hopefully see why in a bit

1. You want the join to be facing away from the door as this will make it less noticeable. Take the board that is going to be at the back and offer it up to the wall, then take an offcut and place it on the other wall butting it up to the first piece of skirting and use the edges that meet to draw a line where they meet. This gives you the angle of the wall, use this to set your mitre saw to the correct angle cut the end off the skirting then offer it up to the wall again, it should now sit (mostly) flush with the wall it's meeting.
   
2. Next take the second piece of skirting and butt it up to the first, repeat the process with an offcut of skirting. So that you have the angle of the other wall. Set your mitre saw to this angle but this time with a 45 degree bevel set (tilt the blade to 45) and cut along the line.
   
3. Using the side of a pencil tip rub it along the edge where the cut meets the face of the skirting. This give you a much more defined line that is easier to follow.
   
4. Use a handsaw to cut along the straight part of the line. You want to back cut this so that the cut is at about 95 degrees from the face (slightly past vertical).
   
5. Use a coping saw to cut the wiggly bits at the top, again back cutting. The back cutting just makes a bit easier to adjust and means it will all fit together nicer if the joint isn't an exact 90 degree angle.
   
6. Offer them up ,should fit nicely. If you're happy fix them together.
   
   

This video is ok but not exactly how I do it, should give you the right idea though:

https://youtu.be/tQ21WE4KGfw