Porch heave, door won't shut in cold temps

[Karsynandjamie]

Good day, looking for some ideas how to prevent this constant issue during the winter months. I have a steel entry door and the back porch heaves a bit and the door basically won't shut. I can't fix the heave. Just wondering if there are some things I can do to work with the door so I don't have every critter and the cold blowing in all winter long. This house is old and on footings.

 

[Silentrunning]

Are you able to get under the house in the area of the door casing?

 

[Karsynandjamie]

I will get in my crawl space and see exactly how much room there is to work, but I am fairly certain it is half the moving around space as the rest of it. Might be difficult to really be able to do anything meaningful in there. I will write back once I am down there and inspecting. Say for argument I am able to get in there, what would be something I could do from that standpoint?

 

[Silentrunning]

If the floor joists have sagged or become unadjusted from temperature shift, you may be able to fix the problem with a bottle jack and some shims.

 

[gorgon]

Is the movement due to frost in the ground, or something else?
If it is frost in the ground, you could use ground insulation plates, about one meter horizontally out from the wall and/or around support points for the porch. Depending on what is moving. You need to do it on both sides of the wall if it is frost on both sides. It depends on how deep in the ground your wall foundation is.