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Professional Building Supplies£14.92Visit shop Cromar Grp Roofing Expansion Joint / Roll Mop Trim - 180Mm (W) X 64Mm (H) X 3000Mm (L)
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The Cromar GRP Roofing Expansion Joint (E280) is an essential component for professional roofers and contractors tasked with managing thermal movement on large-scale GRP roofing projects. It provides a robust solution for accommodating structural expansion while ensuring a watertight, professional-grade finish at ridge details. While it is highly durable and compatible with the broader ProGRP system, users should note that precise installation is required to maintain the integrity of the roofing membrane during extreme temperature fluctuations.
| Model Part Number | E280 |
|---|---|
| Brand | Cromar |
The E280 is designed specifically for the ProGRP system. Compatibility with other systems cannot be guaranteed and may compromise the watertight integrity of the roof.
Routine cleaning to remove dirt and debris is recommended. Inspect the laminate bond annually during standard roof maintenance checks.
The E280 is designed to be laminated over as part of the roofing system. It is not intended to be left exposed as a standalone painted trim.
It serves two main purposes: managing thermal movement on large roofs and providing a clean, straight edge for ridge detailing.
Always follow your specific project's technical specification. The E280 is designed to work in conjunction with proper GRP lamination, which provides the primary waterproof barrier.
Ensure the surface was thoroughly cleaned and abraded prior to resin application; re-apply resin and matting according to manufacturer instructions.
Check that all fixings are level and the underlying deck is flat; use temporary chalk lines to verify placement before final mechanical fastening.
Installation should be performed by experienced roofing contractors familiar with GRP lamination techniques. Before installation, ensure the roof decking is clean, dry, and free of debris. Position the E280 joint according to your site-specific movement calculations, fastening it mechanically to the deck. Apply the laminate layers over the joint following standard GRP application protocols to ensure a monolithic seal. Periodic inspection is recommended to check that the joint remains free of debris and that the laminate bond remains intact. Use only compatible ProGRP ancillaries to maintain the system warranty and performance standards.
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