How to fix this exposed metal corner?

[akarki]

Hi,

I want to fix/cover this exposed metal corner. I looked at few videos and have come up with a plan to apply some Selleys Spakfilla, sand the area and use some paint.

However,  when applying spakfilla, it does not stick to exposed metal. 

Could I please know what is the correct fix?

 

[JacobZ]

Hi @akarki,

Thank you for your question about repairing an external angle in your home.

What you're seeing is a 90° External Angle Plaster Trim. 

My advice is to use a plaster product such as this Less Mess Multi-Purpose Joint Compound. Give it a good mix to make the plaster compound fluffy and smooth and then apply it to the corner with a Craftright 100mm Joint Knife, doing your best to follow the contours of the existing plaster.

Once dry, give it a light sand with a sanding sponge before painting to match the surrounding areas.

You might like to have a look at How To Attach And Plaster An External Angle for some further guidance.

Let me know if you have any further questions.

Jacob