C3 Internal Corner Trim

C3 Internal Corner Trim

The C3 Internal Corner Trim is a pre-formed GRP (glass-reinforced plastic) component created for use with the D260 fillet trim. Its clever design eliminates the need to mitre trims together, allowing for a fast, clean, and watertight installation on fibreglass flat roofs.

This trim ensures a professional finish every time and provides reliable protection against leaks and moisture ingress. It’s ideal for both DIY installers and professional roofers, offering convenience and durability in one simple product.

Key Features

1. Pre-Formed GRP Construction: Built from heavy-duty glass-reinforced plastic for long-term durability.
2. No Mitre Cutting Needed: Simplifies installation and reduces time on site.
3. Perfect Fit for D260 Fillet Trim: Designed for seamless integration and a clean internal finish.
4. Watertight Seal: Prevents water penetration at internal roof corners.
5. Low Maintenance: Resistant to weathering and corrosion for lasting performance.
6. Professional Finish: Delivers neat, reliable, and visually clean joints every time.

Directions for Use

1. Position the C3 Internal Corner Trim at the internal roof junction.
2. Secure it to the deck using nails at each end and in the centre.
3. Apply a thin bead of PU trim adhesive between the trim and corner for a watertight bond.
4. Smooth the adhesive using a wetted tool or finger and bandage over the joint for maximum seal integrity.

Why Choose the C3 Internal Corner Trim?

The C3 Internal Corner Trim combines efficiency and strength for a perfect GRP roofing finish. It removes the need for complex trimming or shaping, helping you achieve a professional look quickly and easily. Whether you’re working on a domestic or commercial flat roof, this trim ensures long-lasting performance and total waterproof protection.

Here are 5 more great reasons to buy from us:

Returns are easy, if the items are�unopened and unused�then simply�contact us�for a returns number and send your item to our returns centre for fast processing. We'll get you a replacement or refund in a snap!

In the unlikely event that you find your item cheaper at another online store, just let us know and we'll beat the competitor's pricing hands-down.

We insist that you love everything you buy from us. If you're unhappy for any reason whatsoever, just let us know and we'll bend over backwards to make things right again.

Ordering from APEX Fibreglass Roofing Supplies is 100% safe and secureso you can rest easy. Your personal details are never shared, sold or rented to anyone either.

Here are 5 more great reasons to buy from us:

Returns are easy, if the items are�unopened and unused�then simply�contact us�for a returns number and send your item to our returns centre for fast processing. We'll get you a replacement or refund in a snap!

In the unlikely event that you find your item cheaper at another online store, just let us know and we'll beat the competitor's pricing hands-down.

We insist that you love everything you buy from us. If you're unhappy for any reason whatsoever, just let us know and we'll bend over backwards to make things right again.

Ordering from APEX Fibreglass Roofing Supplies is 100% safe and secureso you can rest easy. Your personal details are never shared, sold or rented to anyone either.