Fasteners:  Cortex® Hidden Fastening System:

Fast and simple, the Cortex® Hidden Fastening System makes fastener heads virtually invisible – resulting in a far more beautiful finished look of your CertaTrim®.  These fasteners provide a strong connection that can be painted.  Use with CertainTeed CertaTrim PVC trim in both smooth and TrueTexture™ finishes.   Available in 50, 250 and 750 lineal foot packages.



To assure a perfect job , it’s highly recommended that all joints be glued in addition to proper nailing to control expansion and contractors.  CertainTeed recommends Partite® Adhesive or  Extreme PVC Trim Welder® adhesive for a perfect long lasting bond of your CertaTrim product installation.



Technical Information

For details on CertaTrim® product specifications see Speficiation Guide.


Installing CertaTrim® properly is critical. For proper installation, using an appropriate PVC cement is critical especially for miter and scarf joints to help control expansion and contraction. We recommend Extreme PVC Trim Welder® or Partite® Adhesive. Our complete installation manual gives you the detailed instructions you need to help with proper installation.

Warranty Details

CertainTeed stands behind our CeraTrim® product with a 25-year limited warranty.

Trim Contractors

See All Contractors near You
Get Started