Why has my builder used silicone sealant on the inside of my PVCu window frames to seal reveals etc rather than a paintable one? I thought silicone sealant was only used outside as now when I want to re-emulsion I have difficulty getting a good edge.
if the silicone is only filling a gap then you should be able to peel it off and refill with a caulk. it may be that they have used it to adhere the trim.