NaN -Infinity

Ultra-Flex Grp kits - Can Be applied direct to Asphalt/Concrete and Metal without re-boarding Free Delivery .

Ultra-Flex Grp kits - Can Be applied direct to Asphalt/Concrete and Metal without re-boarding Free Delivery .

 More payment options

View full details
Description Delivery & Returns Why Buy From Us REVIEWS FAQ

Ultra-Flex is a high performance fully reinforced waterproofing system that is ready to use directly out of the tin requiring NO ADDITIVES.

 

Key advantages include:

  • Excellent adhesion to most Substrates: plywood, felt, asphalt, metals, brick, concrete, wood etc.
  • Creates a fully bonded, elastomeric and seamless membrane.
  • Reinforced with Ultra matting ensures an easy ‘wet on wet’ application.
  • Instantly rain resistant once the matting is incapsulated.
  • Rapid and clean installation.

Suitable applications include:

  • All new flat roof projects
  • Repair, refurbishment or overlay of existing membranes.
  • Walkways, balconies, and foot trafficked roofs.
  • Warm / Cold roofs
  • Green roofs
  • Box, valley, and parapet gutters.

Ultra Topcoat 

Ultratop is used to provide extra durability and a dark grey gloss finish.

Roofs finished with Ultratop are provided with a 15  year guarantee.

20 years when applied by a trained contractor.

Coverage: One 2.5l can will cover 12.5m2 to 15m2, one 5l can will cover 25m2 to 30m2.

 

Please note any orders returned will be minus shipping and a 20% restocking charge.


 

Video Library

Our selection of videos are provided to demonstrate practicable methods on how to easily deal with typical roof detail when installing your liquid applied products.

 


 

 


 

   

Please allow 1 to 3 working days for your order to arrive.

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!
   

Please allow 1 to 3 working days for your order to arrive.

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!

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.

Ultra-Flex is a fully reinforced GRP (Glass Reinforced Plastic) waterproofing system that offers high performance and durability for flat roofing applications. It’s a ready-to-use solution straight from the tin, requiring no additional additives or complex mixing. Once applied, it forms a seamless, elastomeric membrane that’s instantly rain-resistant and designed for long-term protection.

Ultra-Flex boasts exceptional adhesion and can be applied directly to: - Plywood and timber substrates - Felt roofs - Asphalt surfaces - Brick and masonry - Concrete - Metal roofing No re-boarding is necessary, making it ideal for overlays and refurbishments.

Yes, Ultra-Flex is user-friendly and ideal for competent DIYers. The product is designed for a clean and rapid installation with a "wet-on-wet" application method using the included Ultra matting. However, for maximum lifespan and eligibility for the 20-year guarantee, it should be applied by a trained contractor.

Ultra-Flex is versatile and can be used for: - New build flat roofs - Overlays on existing membranes - Warm and cold roofs - Green roofs - Walkways and balconies - Box, valley, and parapet gutters - Foot trafficked areas (with Ultratop)

Yes. Once the Ultra matting is encapsulated, the membrane becomes instantly rain-resistant, which is especially helpful in unpredictable weather conditions.

Ultra-Flex is designed for rapid curing and weather-tolerant performance, making it possible to apply in cooler or slightly damp conditions. However, always ensure the surface is free from standing water, frost, or ice before application for optimal results.

Related Products

1/9