Problems with silicon - its peeling!?

[Rh1464]

Morning everyone.

Have a question regarding some silicon i did about a year ago.

Its to seal in a bathroom between a plasterboard wall with the usual thin skim and then a water based paint on top, and a wooden panel finished in an water based gloss.

Now the gloss side seems to be holding fine, but the sealant that joins the wall has come away - it almost looks like the tension has pulled the skim/paint surface away from the plaster board.

Is this common on this type of wall surface? Is there a way to prevent it or minimise the effect? Need to redo it and dont want the same thing to happen.

Is there a way i should be first preparing the wall and is there a sealant product that is recommended.

Have included some pics so you have a better idea of what im talking about. They are in my album - im new to this so hopefully you can get to them, if not then let me know?

Thanks for any help, really is appreciated!

Rob

 

[foxhole]

The timber will be moving with the change in moisture content/temp of the room so pulls away, plasterboard is a poor medium for silicon.
You will need to remove and replace. Ideally the timber should be siliconed to wall and then the top seal siliconed, giving a double layer of protection as the mositure will have travelled down and caused the expansion/contraction of the timber to worsen.

 

[Rh1464]

Thanks for the info. Makes sense.

I have a window frame that has some patches. Again thats plasterboard but this time to upvc frames. Any way of avoiding it in this case?

 

[foxhole]

Similar problem, the window frames move with temp variations.Ensure the areas are dust free.