sq first class ticket does not have guest allowance
 

Hi

I know that star alliance states that first class passengers are allow to guest one person into lounges but SIA policy states no guesting for first class tickets.

So if I want to bring a guest in to just the first class section, he will be denied entry?

A number of SQ lounges, including SilverKris at SIN, are not *A lounges. *A policies would presumably apply to the separate and inferior *A lounge for *Golds, but that's at best a business class lounge.

There is no guest access for The Private Room, but F pax can guest into the F lounge at SIN.

If OP is flying a *A carrier other than SQ, there will be no TPR access anyway.

so I will be allowed a guest to SK F section?
anyone had tried it previously?

As per your original post, you are an SQ F ticket holder thus you can have a guest in SK F section (but no guest at TPR). I assume your guest is flying with you?

Yes and yes. Two weeks ago. My wife was in SQ F, I was in Y. I was admitted in F. Wife went to TPR (and trashed herself with 5 course dinner there ;) while I was enjoying F lounge.