Clean the sealant regularly with a good anti-mould cleaner or even just white vinegar. Wipe the seals after every shower or bath to ensure that it remains as dry as possible. Also think about the products which you use in your shower or bath.
The fungicide in EVO-STIK Stay White/Clear Sanitary Silicone Sealant only works if it is touching the mould, and sometimes a film of soap can build up and block it. To prevent this, advise customers to try cleaning the sealant with dilute bleach once a month or so.
If your sealant or silicone has gone yellow or is in the process of going yellow, don't worry. It is a common occurrence. Your sealant is likely going yellow because of exposure to UV radiation. However, there are several other reasons why it could be happening too.
Silicones may yellow in the absence of sunlight or due to reaction with certain substrates (e.g. bitumen) or substances (e.g. cigarette smoke). Acid-based silicones and colored variants are more resistant to this. However, yellowing does not affect the adhesive strength or properties of the sealant.
The good news is that this yellowing is temporary and it can be removed with normal household cleaning products. Simply spraying some household bleach onto the silicone and allowing it to sit for 10-15 minutes before rinsing it off will get rid of the yellow colour.
Remove Discoloration From Silicone
Since hydrogen peroxide is a slow-acting bleaching agent, simply place the discolored item in a bowl or sink and pour on enough hydrogen peroxide to cover the stained area. Let it soak for 24 hours. Rinse well before using it.
Gorilla 100% Silicone Sealant is great for kitchen, bath, window, doors, plumbing, gutters and more! Ready for water exposure in just 30 minutes, this sealant is mold and mildew resistant and won't yellow, shrink or crack over time!
Under the action of the catalyst of many white silicone rubber products or transparent products, the product yellowing and discoloration will occur due to the high processing temperature or the high ambient temperature and the influence of heat.
Mix the bleach or vinegar solution with the baking soda to make a paste. Use the paintbrush to apply the paste over the silicon. You can use a toothbrush to access any hard to reach spots. Then, apply cling wrap over the paste and allow the solution to stand for two hours.
Vinegar is safe to use on machines made using natural rubber seals and parts constructed from ethylene-propylene, silicone, fluorocarbon, virgin Teflon, and butyl synthetic rubber seals.
Vinegar – or a combination of baking soda and vinegar – is touted as a safe, 'all-natural' cleaning solution for silicone sealant.
The cleansing abilities of bleach are undeniable, but it is simply too much for delicate silicone rubber. As a porous material, the structure is easily weakened by harsh chemicals.
Getting it White
Before you break out the gloves and safety goggles consider a lighter approach. You can use either a small cup of vinegar or a paste of 1-part water to 1-part baking soda. Applied either of these to the caulking with an old toothbrush and scrub vigorously.
Hydrogen peroxide and bleach are both oxidants, a type of compound that excels at this task. Just remember to wash your stain-free spatulas in warm soapy water before use. JUST CLEAN: Soap washes away oil but not colored stains. CLEAN AND CLEAR: Oxidants break down and remove color compounds.
Lexel clear caulk is 19 times clearer than silicone and won't yellow or cloud up over time.
Secondly, silicone cases are at a higher risk of becoming yellow compared to other materials. Silicone is made from a material called polymer. Polymer is inexpensive, soft, and bendy. Polymer turns yellow with age due to a natural process called material degradation.
There are 2 methods to clean a stained silicone mould: the vinegar way and the baking soda way. Vinegar way: put white vinegar in your silicone mould, to which you add boiling water. After 1 hour of soaking, soak in clear water and then rinse.
No. Alcohol based cleaners should not be used for cleaning surfaces as alcohol inhibits the cure of silicones. Soaps or detergents used to clean the surface must be rinsed away thoroughly with clean water to ensure that all traces of the soaps are removed before sealing.
Hydrogen peroxide can also be used to clean silicone but only if you use it diluted properly. First, mix equal parts of concentrated hydrogen peroxide and distilled water in a bowl. Then dip the silicone into the mixture for 3-5 minutes and wash it with fresh water afterward.