Rotten feet on front door frame

[jonw]

The bottom few inches of my front door frame has rotted on both sides. The remainder seems sound. Is it possible to repair this by cutting out the bottom four inches and fitting a new piece of timber or is a new door frame in order? The door frame is for a large door, 2'10 x 6'10 and has a window above so a standard door frame won't fit this.

Also is it ok to line the frame with a timber to effectively reduce the internal size of the door frame to accept a smaller more standard sized door?

 

[masona]

I have done many repairs on door frame although I don't agree with it and my reason is a) don't know how far the moisture is sucked up the wood and b) the door frame can be weaken if not done correctly.
The best option is a new hardwood frame but it's really up to you.

Also is it ok to line the frame with a timber to effectively reduce the internal size of the door frame to accept a smaller more standard sized door?

Might be an idea to rip the old frame out and put in fresh new timber to build your new size frame

 

[jonw]

Thanks Masona. On closer inspection I think a repair is not worth it. Theres also evidence of woodworm too. A new frame it is!!. Cheers