Hints for Applying Veneer with Contact Cement

Using a vacuum, cold, or hot veneer press with white or yellow glue is the preferred method for applying wood veneer.

If a press is not available, good contact cement may be used. Look for contact cement with the highest level of solids and follow the adhesive manufacturer instructions. (Flammable contact cement often works better than nonflammable.)

1. It is critical to the application to thoroughly stir the adhesives before each use, just as in painting. The solids and solvents must be mixed to form the best contact. Most people overlook this very important step. It is also critical to dry thoroughly — lightly touch to check if it is dry. If even the lest bit tacky, allow to dry thoroughly. Store cans of finishes and contact cement off the floor during winter months.

During the manufacturing process, care is taken to remove as much sanding dust as possible however there is a possibility of fine dust being left behind on the backer side.  It is a good idea before applying the veneer down to the substrate to take a tack cloth or microfiber dust cloth and clean the backer side to remove any remaining dust as it can compromise the glue line and create problems in the glue line itself.

Do NOT use a "J" roller to smooth out flexible veneer. It's critical to use maximum pressure when smoothing out the veneer. Use a piece of scrap wood approximately 12" long and 6" wide as a veneer scraper. Lightly sand the 6" edge to take the sharpness away and create a slight radius, the smaller the radius the better as it will produce the greatest pressure. A 1/16" radius will produce 4 time more pressure than a 1/4" radius. Holding the scraper with both hands and using it like a wooden squeegee smooth out the veneer from the center outward to the edges.

2. While paper-backed veneer is intended for interior use, it can be used on an exterior surface only if an epoxy application is used. Call for details.

3. Veneer must be bonded to a suitable substrate of a reliable quality. MDF (medium density fiberboard) is the most stable substrate, followed by industrial particleboard, veneer-core plywood, and the least stable substrate is hardwood. On plywood substraights, two coats of adhesive must be applied. Apply the first coat and let dry completely before applying the second. One coat is all that is necessary on the veneer.

4. Do not apply veneer directly to drywall, plaster walls, or concrete walls. Delamination can occur. Veneer should be applied to a MDF substrate and then installed over these surfaces. Installation over sub-strates that have been treated with a fire-retardant agent is not recommended without consulting either the sub-strate or you adhesive manufacturer first.

5. When veneering over bending plywood materials, we have found that laminating an 1/8” MDF over the surface makes it more stable (1/8” MDF can bend around a 2’ - 3’ radius).

6. Prior to installation, the veneer should be allowed to “climatize” with the substrate in the same environment for about minimum of 48 hours. Make sure that both the surface to be covered and the back of the veneer are free of dust, dirt, oil, grease or any foreign matter.

7. To avoid sealing in too much moisture, it is best to finish the veneer when the humidity is less than 51%, as it may shrink when placed in a climate-controlled environment.

8. Wood veneers rely 100% on the adhesive. Ask your supplier which content cement contains the most solids. Even though it is more expensive, it will go much farther and will be less costly in the long run. Both the veneer back and the substrate require 100% contact cement coverage. Often, as with plywood, bending board or any other porous substrate a second coat is recommended on the substrate, as the first coat may be partially absorbed. The first coat is acting as a sealer, the second coat is the glue. If you have any problems or contact cement failures, check the troubleshooting guide.

continued on Hints Page Two >>

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