Sealant rotting

A

Andrew Stucken

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I am baffled as to why some sealant I applied in the bathroom and kitchen has become discoloured so quickly.

More bizarrely, half of the sealant is till pristine and white and the other half has turned brown ( (see attached pic).

The container specifies that it is bathroom sealant so that should not be the issue.

I used WD40 to soften the old sealant before scraping it out - is it possible that I used too much of it much of it , or failed to let it dry/was it away sufficiently, and that is the cause of the discolouration?

I want to remove the sealant and start again ut obviusly donlt want to be back at square oe in six months.

Does anyone have any suggestions Sealant.jpg
Sealant.jpg
?
 
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Do a search, starting with the few threads at the bottom of this page and then using the search feature, search for 'best sealant' or similar.

It’s not uncommon and you generally have to re-do it every so often. Using a good brand with mould resistance will help. Good ventilation in the bathroom and regular (ie every time) drying of the sealant will help.
 
Thanks. So it is down to a duff sealant.

I have checked the threads below and ordered a Dow Corning 7815.
 
Dow Corning is the best IMO. Did my bath about ten years ago and it's still good. Make sure water doesn't sit on the top surface of the basin because that will discolour it quickly.
 
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Had my bath sealant on 20 years , still white, the mold and discolouring are caused my leaving sponged, clothes, toothbrush holders etc on the side and leaving the side damp, no air can circulate and mold thrives.
 
Guilty of all the above - however my previous sealant withstood plenty of damp for years. Hopefully the one I have just ordered will do the same.
 
Did you use an acrylic sealant? They aren't a lot of good in my experience.
 
Now I find the gun I have for applying the super sealant I have bought is not man enough to apply this super gooey sealant - it won't squeeze out of the nozzle - so I have now gone for a mid-range sealant that hopefully will last longer than six months!
 
Andrew Stucken said:
Now I find the gun I have for applying the super sealant I have bought is not man enough to apply this super gooey sealant - it won't squeeze out of the nozzle - so I have now gone for a mid-range sealant that hopefully will last longer than six months!
Click to expand...
It sounds to me as if the sealant you have bought has gone off, has it reached it's sell by date?
 
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