Cromar PRO GRP C3 Fillet Corner (Internal & External)

The Cromar PRO GRP C3 Fillet Corners are specifically designed to create a neat, watertight joint when two wall fillet trims meet at a 90° internal corner. These pre-formed corners ensure a consistent finish at internal wall junctions, removing the need for time-consuming on-site shaping.

Precise 90° Internal Corner Joints

Used where two wall fillet trims intersect internally, the C3 fillet corner provides a smooth, continuous transition that supports correct GRP lamination. By maintaining an even radius at the corner, it helps reduce stress points and improves the overall integrity of the roofing system.

Strong and Weather-Resistant GRP Construction

Manufactured from durable GRP, the C3 fillet corner is built to perform as part of a long-lasting flat roofing system. Once bonded in place and laminated over, it becomes fully integrated with the surrounding trims, offering reliable protection against water ingress at vulnerable internal corners.

Faster Installation and Consistent Results

Using a pre-formed internal corner significantly speeds up installation and ensures a uniform, professional finish. It helps installers achieve accurate detailing while reducing the risk of errors that can occur when forming corners manually.

Frequently Asked Questions

What is the Cromar PRO GRP C3 fillet corner used for?

It is used to join two wall fillet trims at a 90° internal corner, creating a smooth and watertight junction within a GRP roofing system.

Is this corner suitable for external corners?

No, the C3 fillet corner is designed specifically for internal 90° corners where wall fillet trims meet.

Does the fillet corner need to be laminated?

Yes, after installation the corner should be laminated and top-coated along with the rest of the GRP roofing system to ensure a fully bonded and waterproof finish.