Castleflex EPDM Tiles BroofT4 Rated

BROOF(t4) is a fire performance classification used in the UK and Europe to assess how roofing systems react to external fire exposure. It is defined within BS EN 13501-5:2016, the European standard for classifying roof coverings according to their external fire performance.

In simple terms, this rating confirms that a roofing system has been tested to demonstrate strong resistance to fire spread when exposed to flames and heat from outside sources, such as nearby fires or burning debris.

What is the t4 test method?

The t4 test method evaluates the performance of a complete roofing system under external fire conditions. Unlike testing a single material in isolation, the assessment considers the full roof build-up as it would be installed in real-life construction.

The test assesses:

🔥 External flame spread across the roof surface
🔥 Fire penetration through the roofing system
🔥 Production of burning droplets or debris
🔥 Overall behaviour under external fire exposure

This provides a realistic indication of how the roof system performs in practical scenarios.

What does the “B” classification mean?

The “B” in BROOF(t4) indicates a high level of performance in resisting external fire spread. A system achieving this classification has demonstrated that it:

🔥Limits flame spread across the roof surface
🔥Helps prevent fire from penetrating through the roof build-up
🔥Performs safely under defined external fire test conditions

This classification is widely recognised for demonstrating suitable fire performance for many UK roofing applications.

What this means for UK projects

For architects, contractors and specifiers, a BROOF(t4) classification provides confidence that the roofing system has been independently tested to a recognised European and UK standard.

For Castleflex EPDM rubber balcony and flat roof tiles, this means:

✔ Suitable for use where external fire performance is required
✔ Supports compliance with UK building regulations relating to roof fire safety
✔ Helps reduce the risk of flame spread on balconies, terraces and flat roofs
✔ Provides reassurance to specifiers, building owners and project teams

Important note

Fire classifications apply to the specific tested roof system configuration, including substrate, insulation and installation method. The installed system should match the tested specification to ensure equivalent performance. Castlefex EPDM tiles were tested on their own in the assumption that they would be added on top of an already complaint BroofT4 roof build-up. Full test report available upon request.

Sarah M

Once again, a great company to deal with, helpful and reasonably priced. Highly recommend

Charlotte

Impeccable service from this company! From start to finish they have showed patience, kindness and honesty throughout. As for the product.......beyond our expectations!! After almost a year of deliberation and with limited options due to placement we decided on the grassflex tiles and 100% made the right choice. Great quality! Thank you

Pam Jordan

Just had a 15m garden wall built, topped by porcelain coping stones. Customer service was wonderful, and Fraser was so incredibly quick to answer any questions l asked. Samples were sent first and ordering was easy. Thank you Fraser for all your help. A great company to deal with!

Absolutely amazing service from start to finish! Fraser was super helpful, replied promptly to all my queries, delivery was quick and smooth. Trully great team providing best service, was kept updated on my delivery which was super fast, would definitely recommend this company! Thank you Fraser. Kind Regards Jara

Carole McGregor

Fabulous service from this company and Martin in particular who took me through the order process step by step. So easy to deal with. Very happy with the copes and pier caps ordered. Great quality and speedy delivery. Would definitely use again.

Lucy Zorina

Absolutely amazing customer service from Fraser Brown! We had a delivery of outdoor tiles this morning, and our construction team was struggling to figure out how to use the levelling discs supplied. Fraser immediately stepped in and provided a direct WhatsApp number so the team could send videos and speak to him directly. The issue was resolved within five minutes. A huge thank you to Fraser for such responsive and hands-on support — truly appreciated!

Truman Burbank

Great products at good prices. Highly recommend.

L McGinness

A great experience with Castle Composites! We purchased the EPDM Rubber Tiles in ‘Sunburst’ for the kids’ play area section of our garden. Fraser was a wonderful help - from the first phone call enquiring about the product, showing us samples at the warehouse, liaising throughout the ordering and production process (and for helping with a later change to increase our order quantity within the same batch), to ensuring smooth delivery, Fraser’s customer service was fantastic and very much appreciated. The play area is now fully installed in our garden and we are delighted with the finished product. Thank you!

Ernest Machin

Excellent service from a great company with fantastic staff and a wonderful product. We have just used Castleflex tiles for our large patio and are very pleased with the end result. They look great and were easy to lay.