Corian solid surface material can be used for countertops or a variety of other home projects with beautiful results. Installation of Corian often requires the use of a special glue or adhesive to join pieces together to create minimal seam visibility. Specific steps must be followed according to the manufacturer's recommended techniques to achieve proper adhesion of the material.
Follow the manufacturer's recommended techniques to properly cut the two edges of the solid surface to be seamed. Select the proper bonding material from Corian or your solid surface manufacturer. Most companies offer a pre-measured tinted adhesive that must be mixed to activate the hardening properties and usually comes in a packet or a cartridge with two separate components. There should be several colours, or clear, to choose from to adequately match your solid surface material.
Sand the top of your seam lightly, using 100-grit sandpaper to scuff the surface and provide a better bond. Clean off the edges with isopropyl or denatured alcohol. Put some type of separation paper, such as waxed paper, under your seam area, that will not stick to the material.
Align the Corian pieces. Mix the resin and activator adhesive for two minutes, or if using a pre-filled ready-to-use cartridge-type dispenser, dispense a small amount of it to get the flow coming out smoothly and then install the mixer tube. Dispense two thin beads of adhesive along the edges of the seam to fill any gaps and allow the hardener to set up evenly. Another good technique is to use a Popsicle stick applicator to spread out the adhesive evenly.
Clamp the two pieces together. The best clamps for this process are Pinske Power Grips with brackets and turnbuckle; however, you can effectively use other clamps to create a tight bond without excessive force that might squeeze out too much adhesive and compromise the bond.
Remove the clamps when the adhesive is dry. Follow Corian's or your solid surface manufacturer's instructions to properly finish the seams with sandpaper to create the least visibility of the seam while blending it in with the rest of the material. This technique is usually done by a trained fabricator using an offset trim router and then varying grades of sandpaper to feather-in the seam.
It is recommended to support the seam by placing a joint seam block on the underside of the seamed area once the adhesive cures. Turn the Corian jjoined pieces over to work on the underside. Use a piece of 6-inch-wide solid surface material that extends to almost the length of the seam. Sand the excess dried adhesive on the underside so that it is flush. Clean the area with denatured alcohol and scuff the seam and surrounding surface with 100-grit sandpaper. Place an evenly spread bead of the same solid surface adhesive on the joint block and adhere it to the seam. Place weights or weighted objects (not too heavy) on the block and allow to dry. When it cures, flip the solid surface over and begin the process of feathering the seam.
Corian, or other brands of solid surface material, is best seamed or glued together by a certified and fully trained fabricator familiar with that material and the best techniques pertaining to it. Corian comes with a long warranty (usually 10 years) on their product if it is installed by one of their certified professionals.