Kitchen sealant 101
One of the most important things about Silicone sealant is to remember that it is to seal the edges of surfaces between the sink and the unit it is installed into, tiled areas and the surfaces in use and several other key areas.
It serves as a barrier to protect the areas behind the installed units and other areas from water and other spillages while allowing for the easy cleaning of all the areas without fear of damaging unprotected surfaces.
Kitchen sealant is one of the last things to be applied to a kitchen installation. The best kitchen sealant is difficult to damage, but easy to wipe clean, making it indispensible in any setting.
Installing or replacing kitchen sealant
Kitchen sealant is easy to install or replace - one of the most important things that you need to ensure is that the surface is dry and clean and clear of dust. If it's not, you should dry, or clean it well, with something that won't leave a layer of material that will impede the adherence. Apply the sealant following the instructions, taking care not to stick it to anything else or place it anywhere that it could damage. Smooth carefully the provided tool, or a soft cloth, or other applicator and allow it to set before using the surface, then wipe clean and trim. At that point you should have a clear joint between your counter top and wall, or sink and wall.
Silicone sealant also comes in strips, which can be applied with a special tool that tucks it down into the corner, and makes an L shape, or comes in pre 'v' shapes that can simply be applied to the wall. These generally aren't see-through, and are white and clean.