Can You Put Cork Underlayment Beneath DuraCeramic?

Manufacturer Recommendations

• Congoleum, the manufacturer of DuraCeramic tile flooring, has a number of recommendations for DuraCeramic tile application and subflooring. There are no outright warnings against using cork as an underlayment, but it is not recommended. Furthermore, Congoleum does not recommend DuraCeramic be used over glass mesh mortar or cement backer-boards. The manufacturer states that the underlayment should be smooth and untextured. Some textured flooring can show its texture when the flooring is set. Congoleum advises that the underlayment or floor should be at least one-quarter-inch thick and should not be springy. Cork underlayment has a cushiony and porous texture, so it is not ideal for DuraCeramic-type flooring.

Ideal Underlayment

• Smooth, thick and resilient underlayment is best for DuraCeramic. Congoleum recommends plywood that is well-sanded, smooth and of underlayment grade. Additional ideal choices are hardwood and veneer. But other types of wood board, including Lauan plywood, chipboard and particleboard, are not recommended as they will not provide the same level of adhesive strength. Underlayment is required only if the existing flooring is inappropriate as a subfloor for DuraCeramic.

Other Subflooring Options

• Proper underlayment is one of many options you have as a base for DuraCeramic. DuraCeramic tiles can alternatively be installed over wood flooring, concrete, ceramic and stone. Make sure the subfloor is solid, dry, smooth and clean before beginning installation. There should be no swelling of joints or warping. The floor should be rigid, not springy, to ensure proper adhesion. If you don't have a subfloor that meets these recommendations, you can lay plywood underlayment to serve as your base.

Installation and Maintenance

• Install underlayment as directed by the manufacturer and make sure the surface is solid and clean. The adhesive used to install DuraCeramic is pressure-sensitive. A lack of rigidity or a porous surface, as seen in cork flooring, can prevent proper adhesion. To install, apply the adhesive and press down into place. Follow manufacturer instructions for installation. Once your flooring is installed, proper care is essential to keep it looking its best. DuraCeramic is prone to chipping, so avoid scraping sharp objects across the floor and use floor protectors for furniture.