How should I tackle this please

billiepiper14

Emmia said:

Honestly I would have cleaned, dried and then applied the silicone. I wouldn't be spraying degreaser on whilst applying as I'd worry about adhesion and curing issues.

Yeah me too I was a bit concerned but when I asked he said it’s best thing

Emmia

billiepiper14 said:

Emmia said:

Honestly I would have cleaned, dried and then applied the silicone. I wouldn't be spraying degreaser on whilst applying as I'd worry about adhesion and curing issues.

Yeah me too I was a bit concerned but when I asked he said it’s best thing

I'm a DIY'er... Is he a pro?

billiepiper14

Emmia said:

billiepiper14 said:

Emmia said:

Honestly I would have cleaned, dried and then applied the silicone. I wouldn't be spraying degreaser on whilst applying as I'd worry about adhesion and curing issues.

Yeah me too I was a bit concerned but when I asked he said it’s best thing

I'm a DIY'er... Is he a pro?

He has his own plumbing business yes 

Emmia

billiepiper14 said:

Emmia said:

billiepiper14 said:

Emmia said:

Honestly I would have cleaned, dried and then applied the silicone. I wouldn't be spraying degreaser on whilst applying as I'd worry about adhesion and curing issues.

Yeah me too I was a bit concerned but when I asked he said it’s best thing

I'm a DIY'er... Is he a pro?

He has his own plumbing business yes 

Ah, that would explain the neat finish.

WIAWSNB

Hi BPiper.
Almost certainly nothing to worry about.
I suspect it's the remaining 'smear' of silicone left behind on the surrounding surfaces either side of the actual silicone bead.
He used a Fugi, yes? The rubber contact 'blades' that rub along the tiles and the tray to remove excess silicone is unlikely to remove every trace, and these smears will also have been kept from adhering by his spray of degreaser. 
So now you are using the shower, these unwanted 'skins' are coming off, that's all.
You can check the integrity of the actual bead by looking at it closely, and prodding it with something blunt - ie not a knife tip! It should feel obviously firm but rubbery.
I'd suggest - ooh - around 100% now't to worry about.
However, I'm not a fan of using any liquid in order to lube the process, not 'soapy water', not anything. Why? Because if this first gets on any of the line you wish to 'bead', then the silicone ain't going to stick to it.
(Exception - in the YouTube vid, the guy finished off the very end of a formed beading by wetting a fingertip and giving it a gentle rounding. That's ok, 'cos all he was doing was finishing off a bead already in situ.)
The Fugi is a brilliant tool, not only for getting a superb finish very easily, but for sealing the silicone right down tight - to infinity - against the surrounding surfaces, the wall and tray. It does this with aplomb - the edges of the bead should be reduced to near zero silicone, as the tool wipes away cleanly when it touches these surfaces. This leaves a joint and 'seal' that shrugs off water.
However, if there is any trace of any material on there first - water, degreaser, old soap, whatever - then the silicone will not seal along these edges, and will be prone to leaving a raised finished edge instead.
If this happens, expect mould lines at best, and water ingress at worst - but the latter is highly unlikely unless a significant part of the line to be sealed has been contaminated.
Provided the joint line is clean before application, and the applied cartridge bead of silicone covers the whole area the finished bead will take up (hugely wasteful if silicone...), then a spray of summat is unlikely to cause issues. But I have never used a lube for this job, for the reason above. 
I personally think it's a mistake to do so.
But... chances are yours is fine. 

billiepiper14

Thankyou very much for your replies. I’m a worrier if you can’t tell. So if all looks like a great seal to the wall & shower tray & it’s firm to prod I should stop worrying about it ? Kicking myself for leaving the degreaser I had used to pre clean the area in the shower tray as he picked it up and used it in a flash lol. 

WIAWSNB

Yes, if it looks good, it is

Next time - not that there will be one based on this cove's reluctance - pick up the degreaser, and give it a good squirt in his eye...

billiepiper14

Haha Thankyou I will