Rendering over external L steel

[L30Z]

I want to skim over an external steel above my window. Would I have to stick Lath to it somehow first?

The steel is supporting the slate cladding at about 150mm and is tied to the outer leaf wall of the house.

My Dad has tried to attach a white uPVC fascia board on another window and has cut it into some sort of sill above the window. This looks terrible and I want to just skim it with a cement/sand render.

Does anyone have any suggestion? I've attached two photos.

Cheers, Leon.

View media item 23573 View media item 23574Click to zoom.

 

[Micilin]

Can you drill a pilot hole and drill with self tapping screws?

Stainless screws with big heads (or with s/s washers) to hold s/s rib lath ( or eml) will do the job. If you can't get washers, just use the screws into the corners of the holes in the mesh.

You can lap it around a bit on the front and render to give a band feature.

Have you considered , instead of render, sticking matching slate to the mesh instead of render? You's have to be mindful that it is weather proof

 

[external]

as micilin says,ive seen welsh slate to match that.

 

[roy c]

I think that you would have a problem trying to render over the steel. It looks like it has got "rust" spots on it ready to break through. Is the cladding going to get "pointed" up? As it looks a bit rough in places. I think the only way to sort the steel out is to grind the rust off it and put a few coats of red oxide on it and give it a few coats of paint to match the cladding. Or when you have red oxided it stretch some ex-metal over it (nailing it close to the window frame) and turning it up over the front edge and put a angle bead on and and make a "band" around your window.....

 

[L30Z]

Thanks for the replies. We'll probably put lath over it with a sand/cement render.

I'll put pictures up when I've finished.

We are pointing the blocks, we just hadn't got down to the window level at the time the photo was taken.

Cheers, Leon