Sound advice for a sound, non leaking unit !
Im sure everyone whom owns their own home has had a go at using bath silicone sealant before. Did you end up with sticky hands after five minutes ? I bet you did.
Here are my tips : Have a finger bowl full of water by your side, and an old piece of cloth.
1. The place you are doing must be absolutely dry and clean. Remember bath sealant does not stick to water, thats why water runs off it.
2. Always start in a corner, not in the middle, you dont want a joint later on, which will look lumpy.
3. Once you start, make sure you keep the preassure on the gun, and keep a constant speed at the same time. Its like the butcher making sausages!
4. The sealent going down must look slightly too liberal, it will all be used once you press it down later on.
5. THE CRUCIAL ONE, now wait about 3 minutes, let it get a slight skin. But not too long otherwise it shall RUBBERIZE and you wont be able to change its shape.
6. Pick a finger, make sure the tip is clean and dry. Dip it into the finger bowl. Now run it along the bead of silicone for a couple of centimetres, pressing the silicone into the desired shape, moulding it to the sink/shower unit and wall. Preassure is needed to make it bond. Keep repeating until you get to the end of the bit you laid down earlier.
7. If you do this properly, the silicone shouldnt stick to you at all. If you break the skin (of the silicone) it will, or if your finger is too dry it will.
8. If you are doing a bath its better to fill the bath half full of water immediately after putting the sealant. This will mimic a person in it. If this is not done the silicone will develop gaps when the bath is in use with a person in it. A bath always sinks 1 or 2 milimetres during use.
I hope this has assisted you in your job.