OCR then silicone finish

[xyzplasterer]

How to you finish the OCR ready for silicone?

I've seen somebody on youtube use an I section would this not be too sandy? or do you sponge after I section?

 

[PFTwales]

float it flat and smooth

 

[xyzplasterer]

That's what I have always done...ruled flat then floated.

Just wondering if I Sectioning is quicker...

 

[PFTwales]

i section will be quicker

 

[Rigsby]

I section is ok at this time of year when it is still going to be too wet to finish at dusk.

 

[plasterjfe]

The fine scrape finish from the section means it will take longer to prime and it uses a tad more and on mortar you need a good prime to kill the suction.
The finish won't be any different tho using 1.5 mm text.

I usually section off then close it with a sponge float