How to repair sealant on external uPVC window

[potato80]

Hi all

Not sure what the material is, but this clear sealant on the external side of our uPVC windows is deteriorating (see pictures).

Does anyone know a product I can use to replace it please?

Cheers

 

[foxhole]

Windows don’t require sealant on frame.

 

[potato80]

Windows don’t require sealant on frame.

Dyou have any idea what this stuff is then @foxhole ?

Is it not likely glazing sealant or glazing silicone (such as DOW 799)?

 

[crank39]

It is silicone, used to cover that gap between the round bay pole and the bay pole adapter, belt and braces stuff, clean the pvc down with some solvent cleaner and reapply a bead of white or clear silicone, be sure to use a low modulus neutral cure though as I suspect a high mod acetoxy cure was used, it doesn't stick well and peels off like string once it detaches

 

[potato80]

It is silicone, used to cover that gap between the round bay pole and the bay pole adapter, belt and braces stuff, clean the pvc down with some solvent cleaner and reapply a bead of white or clear silicone, be sure to use a low modulus neutral cure though as I suspect a high mod acetoxy cure was used, it doesn't stick well and peels off like string once it detaches

Thanks v much that's really clear. I'll check which of the silicones are most appropriate in terms of cure.

@foxhole - see above