




B230 to A170 GRP Trim Corner Closure – Left & Right Handed External Corner
Manufacturer/Brand: CFS Fibreglass
SKU:ZGBB23-17L
In stock
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The B230 to A170 GRP Trim Corner Closure is designed to provide a smooth, professional join where a B230 Raised Edge Trim meets an A170 Drip Fascia Trim at an external corner. This durable, pre-formed GRP corner trim eliminates the need for mitre cuts, delivering a fast, clean, and weatherproof finish every time.
Available in both left-hand and right-hand versions, it’s the ideal solution for creating sharp, reliable corners on GRP fibreglass flat roof installations.
Key Features:
- Strong & Lightweight: Made from high-quality fibreglass for long-term durability.
- Weatherproof Fit: Ensures a tight, watertight seal at vulnerable corner points.
- Fast & Simple Installation: No mitre cuts needed – just bond and tape into place.
- Neat & Uniform Finish: Provides a tidy, professional look across your roof edges.
Perfect for GRP flat roofs, garages, home extensions, dormers, and all fibreglass roofing systems using A170 and B230 trims.



Additional Information for B230 to A170 GRP Trim Corner Closure – Left & Right Handed External Corner
Technical Information
Delivery Information
Delivery Information
Our GRP Roofing items are delivered to all Mainland UK postcode regions on a 1 to 3 working days basis. Scottish highlands and UK Islands cannot be organised through the website and we request that you contact us directly for the costs and delivery timescales for these locations.
Please be aware that your order may arrive in multiple deliveries and not necessarily all at once. Each part of your order may be delivered separately.
We strongly recommend refraining from booking, scheduling, or commencing any works until you've received your complete materials order. Your satisfaction and seamless project execution are our top priorities.