Description
GRP External Corner (C1) – Pre-Formed Corner for Raised Edge & Drip Trim Junctions
Create clean, watertight external corners with the GRP External Corner (C1) — a precision-moulded trim designed to connect raised edge (kerb) trims and drip trims in GRP flat roofing systems.
This pre-formed corner ensures fast installation, consistent detailing, and long-term protection at critical roof junctions.
Clean & Reliable External Corner Formation
- Pre-Formed Design – Speeds up installation and ensures accurate corners
- Compatible with Kerb & Drip Trims – Ideal for raised edge and edge transitions
- Hot-Pressed GRP Construction – Strong, durable, and precision moulded
- Cold Applied Installation – No heat or flames required
- Weather Resistant – Frostproof, stormproof, and impact resistant
- Left or Right-Hand Use – Flexible application for different roof layouts
Built for Watertight Performance
This external corner is essential for:
- Joining raised trims at corners
- Transitioning between kerb edges and drip edges
- Preventing leaks at exposed junctions
- Maintaining a professional, seamless roof finish
Installation Overview
- Nail the corner to the deck (both ends and centre)
- Apply PU trim adhesive to all joints
- Smooth adhesive to seal the connections
- Bandage with fibreglass tissue for a flush, watertight finish
✔ Ensures strong bonding and long-term durability
Ideal Applications
- GRP flat roof external corners
- Raised edge (kerb) trim junctions
- Drip edge to kerb transitions
- Domestic and commercial roofing systems
- New installations and refurbishments
Product Specifications
- Product Type: External corner trim (C1)
- Material: GRP (Glass Reinforced Polyester)
- Application: Kerb and drip trim junctions
- SKU: PG-C1-Ext-Kerb
- Stock Type: Warehouse Fulfilled
Why Use a C1 External Corner?
The C1 corner ensures consistent, watertight detailing at exposed edges, reducing installation time while improving roof durability and finish quality.
Frequently Asked Questions
What is a C1 external corner used for?
It is used to join raised edge trims and drip trims at external corners.
Can it be used for both left and right corners?
Yes, it can be used for both left- and right-hand configurations.
Does it improve waterproofing?
Yes, it creates a secure, sealed junction at roof edges.
Is it easy to install?
Yes, it is quick to fix using nails, adhesive, and bandaging.
Is it suitable for all GRP roofs?
Yes, it is suitable for both domestic and commercial GRP roofing systems.
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