Description
GRP Internal Fillet Corner (C3) – Pre-Formed Corner for GRP Roofing Systems
Create a clean, watertight finish at internal junctions with the GRP Internal Fillet Corner (C3) — a precision-moulded corner trim designed to seamlessly connect two fillet trims in GRP flat roofing systems.
Manufactured from durable Glass Reinforced Polyester (GRP), this component ensures consistent detailing, faster installation, and long-term reliability.
Seamless Internal Corner Detailing
- Pre-Formed Precision Shape – Hot-pressed for a consistent, accurate fit
- Designed for Fillet Trim Junctions – Perfect where two trims meet internally
- Quick & Easy Installation – Fix with nails and PU adhesive
- Smooth, Professional Finish – Use tissue bandage for a seamless result
- Durable GRP Construction – Impact-resistant and weatherproof
- Time-Saving Solution – Eliminates the need for on-site shaping
Reliable & Watertight Performance
This internal corner trim helps:
- Maintain waterproof integrity at junctions
- Reduce weak points in the roofing system
- Improve overall system durability
- Deliver a clean, professional finish
Installation Overview
- Nail the corner to the deck (both ends and centre)
- Apply a thin line of PU adhesive to joins
- Smooth adhesive to seal joints
- Apply fibreglass tissue bandage for a flush finish
✔ Ensures a strong, seamless bond
Ideal Applications
- GRP flat roof internal corners
- Fillet trim junctions
- Domestic and commercial roofing systems
- New installations and refurbishments
Product Specifications
- Product Type: Internal fillet corner trim (C3)
- Material: GRP (Glass Reinforced Polyester)
- Application: Internal corners in GRP roofing systems
- SKU: PG-C3-Int-Wall
- Stock Type: Warehouse Fulfilled
Why Use a Pre-Formed Corner?
Pre-formed corners ensure accuracy, speed, and consistency, reducing installation time while improving waterproofing performance and finish quality.
Frequently Asked Questions
What is a C3 internal fillet corner used for?
It is used where two fillet trims meet at an internal corner on a GRP roof.
Does it improve waterproofing?
Yes, it helps create a sealed, watertight junction.
Is it easy to install?
Yes, it is quick to fix with nails and adhesive.
Do I need to bandage over it?
Yes, using fibreglass tissue ensures a smooth, seamless finish.
Is it durable?
Yes, it is impact-resistant, weatherproof, and long-lasting.
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