F300, F600 & F900 Continuous Flat GRP Sheets

F300, F600 & F900 Continuous Flat GRP Sheets

F300, F600 and F900 Continuous Flat Sheets are flexible, 1mm-thick GRP flat flashing rolls designed for roof junctions and custom fibreglass roofing details. They are commonly used beneath slates where a pitched roof meets a flat roof, helping to create a continuous, weather-resistant transition across dormers and similar roof details.

Choose from 300mm, 600mm and 900mm widths to suit the required coverage. Each width is available per metre for smaller details and repairs, or as a full 20m roll for larger roofing projects.

Key Benefits

• Three widths available: 300mm, 600mm and 900mm
• Flexible 1mm GRP sheet for roof-junction detailing
• Suitable for pitched-to-flat roof transitions and dormer details
• Can be used as continuous flashing beneath slates
• Also suitable for gutter lining and selected custom GRP roof details
• Available per metre or as a full 20m roll
• Continuous roll format helps reduce the number of joints
• Designed for compatible GRP fibreglass roofing systems

Technical Specifications

Available Options

• F300 – 300mm – Per Metre
• F300 – 300mm × 20m Roll
• F600 – 600mm – Per Metre
• F600 – 600mm × 20m Roll
• F900 – 900mm – Per Metre
• F900 – 900mm × 20m Roll

Which Width Should You Choose?

• F300 – 300mm – narrower roof-junction and flashing details
• F600 – 600mm – details requiring greater coverage
• F900 – 900mm – wider junctions and larger custom roof details

The correct width and overlap depend on the roof geometry and roofing-system specification. Confirm the required size before ordering.

Suitable Applications

• Pitched-to-flat roof junctions
• Dormer roof details
• Continuous flashing beneath slates
• Gutter lining
• Custom GRP flat-roof details
• Domestic and commercial roofing projects

Installation Note

Install according to the instructions for the compatible GRP roofing system and your project specification.

At a typical pitched-to-flat junction, the F trim should be bonded only along its bottom edge and not fully laminated over, so it can accommodate thermal movement without cracking.

Any unlaminated section can be topcoated with the rest of the roof.

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.