B230 - B230 External Corner Trim/Closure
B230–B230 External Corner Trim – GRP Roofing Raised Edge Connector
The B230–B230 Corner Trim is a high-quality, pre-formed external corner trim specifically designed for use with GRP fibreglass roofing systems. It seamlessly joins two B230 Raised Edge Trims, creating a clean, professional corner without the hassle of making mitre cuts on site.
Perfect for use on flat roofs, garages, extensions, and other fibreglass roof applications, this trim ensures a watertight, long-lasting finish that’s both strong and easy to install.
✅ Key Features:
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Strong & Lightweight Construction
Made from durable, premium-grade Glass Reinforced Plastic (GRP) for superior strength and performance. -
Weatherproof & Watertight Seal
Designed to prevent leaks and water ingress at external roof corners. -
Quick & Easy Installation
Saves time on site—just bond and tape using standard GRP roofing methods. No cutting or mitring needed. -
Neat, Uniform Appearance
Delivers a smooth and consistent corner joint, enhancing the overall look of your roofing project.
✅ Ideal For:
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GRP flat roofing systems
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Garage roofs
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Home extensions
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Garden buildings and sheds
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Commercial fibreglass roofing projects
Product Details:
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Trim Type: External Corner
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Fits: Two B230 Raised Edge Trims
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Material: High-quality fibreglass (GRP)
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Use: Weatherproof corner detail for fibreglass roofs
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Installation: Bond and tape – no mitre cuts required
Trade In Timber EXTRA-
(online purchase-nationwide delivery)
Lead time of 2-4 working days, but some items or addresses may take 7-10 working days.
Your delivery charge will be displayed in the trolley page at checkout prior to purchase.
Once the order has been purchased a member of our team will be in contact to discuss delivery.
The products ordered are for kerbside delivery only which means our drivers will unload goods at the nearest access point on the kerb outside of your property.
You can also collect timber from our Timber Yard. Our address is Power Station Rd, Minster on Sea, Sheerness, Kent ME12 3AD
We are open:
Monday - Friday 9am - 3pm
Saturday 9am - 1pm
Sunday closed
Huge savings can be made buying some of our products in bulk. Take a look at our bulk offers to see how much you can save.