Finishing the Edges
These often have unfinished edges that require covering with laminate strips supplied by the manufacturer. The strips can sometimes be ironed on, but others will need contact adhesive. Once the strip is fastened in place and any adhesive is dry, you can trim the edges flush using a utility knife.
Solid surface countertops
Sawn edges of some types of solid surface can be sanded smooth. Always check manufacturer's guidelines.
Solid wood countertops
These are best sanded smooth, then stain-protected using the oil recommended by the manufacturer. Paint on several coats of oil, removing any excess with a dry cloth. Extra oil may be required at intervals to maintain the finish.
After installation, seal the exposed surfaces with a sealing product. The sealer prevents the surface from absorbing food stains and odors, and it makes it easier to clean. When dry, buff out the surface using an abrasive pad. Then apply a coat of acrylic clear finish. To achieve a high-gloss finish, buff the surface.
You can always seal your stone countertops, but keep in mind that a sealer does not make the stone unstainable. The sealer’s main job is to fill the pores in the stone and make the staining process slower, so you have more time to clean a spill before a stain sets in. Marble and granite surfaces should be sealed at least once every year.