Yellow Silicone

[rosiew]

Morning all.
After several years the Silicone around my kitchen window has yellowed and no amount of cleaning will bring it back to its original colour of white. Does anyone know of a solution. Would the old Silicone have to be removed and re done.
Have a great Sunday.

[1ozzy]

Quite a lot of "silicones" will yellow with age in the sunshine as they are not UV resistant.

If it is still sealing ok, learn to like yellow, if not get it replaced.

I doubt you will ever get rid of the "yellowing".

[rosiew]

Thanks for that 1ozzy

[KARL]

One option would be to apply a fresh white layer on top, not too difficult and even a competent DIY person could. There might be issues with adhesion though, so you could try a sample to find out.

[The Builder]

Or ........... I haven't tried this, but it may be worth a shot........ wipe some "silicone remover", also known as "silicone eater" along the bead.

Perhaps wipe it on with a piece of cloth.

http://www.screwfix.com/p/no-nonsense-sealant-remover-100ml/88987?kpid=88987&cm_mmc=Google-_-Product%20Listing%20Ads-_-Sales%20Tracking-_-sales%20tracking%20url&;gclid=CKzv69nr2NECFY8Q0wodp9cGQA

[KARL]

Still on the subject - I recommend silicone of the brand name Pattex. Three years ago I sealed up around a new window.... and kept the partly used tube (as one does). Yesterday I sealed up another window with some of the remainder. This is the only time I have been able to get any use out of a tube of silicone opened more than 6-9 months previously. I do have several cylindrical pieces of solid silicone in different colours.

[alavahalf]

Quite a popular request on my job sheets ...' Re-do silicone around sink and bath'...
Every time I tackle them in the same way. A stanley knife is used to cut the old silicone out. Cut along the back edge of the old silicone, sliciing right down to the sill. Then cut along the bottom edge slicing right back to the window frame.
If you are left with quite a bit of the old sicone still sticking to either surface, use a scraper to remove as much as you can. Personally I would continue to scrape until all the old stuff is removed. Anything left can be got rid of with a siicone remover if need be, but that just takes more time. ( and we all know what more time costs).
As for the new siiicone, the best one I have found is called 'Forever White' .. it is made by Everbuild and seems to have no issues with mould or yellowing.
When it first came out I was paying £15 a tube for it, but it was worth it.
Now it can be got at a more realistic price ... http://www.toolstation.com/shop/p63890?searchstr=forever%20white
Just over fill the gap and finish it of with a fugi .. http://www.toolstation.com/shop/p46602?searchstr=fug
.. people will think you are a real pro when you use one of these.