Composite Trench Covers
With an unrivalled strength-to-weight ratio, lightweight Fibrelite trench covers are available in a range of load ratings (from 1.5 to 90 tonnes) to suit every application and every budget. Easy-to-remove, safe and available in an almost limitless range of RAL colours, sizes and configurations, each cover is designed to deliver years of trouble-free service even in the harshest environments.
Although GRP composite covers are now increasingly preferred to the traditional metal or concrete options – not every composite cover performs to the highest standards year after year.
Fibrelite trench covers are a high-performance product created via resin transfer moulding (RTM) to create a durable, monolithic cover that you can truly fit-and-forget. What’s more, each one has been individually engineered in our own manufacturing facilities.
Fibrelite has been at the forefront of composite quality and innovation since 1980 when we designed the world’s first GRP composite manhole cover for the retail petroleum industry. Our high-performance, lightweight, safe-to-lift composite covers – including the unique F900 load-rated trench cover – are now selected by specifiers, architects and engineers worldwide.
Why Choose a Fibrelite Trench Cover?
Benefits at a Glance
Designed as a ‘fit-and-forget’ product, our GRP composite covers are maintenance-free, durable and very strong.
A prime reason for selecting a composite cover is for its inherent resistance to corrosion. This makes it an obvious choice where water, waste water or corrosive liquids are involved. Fibrelite covers are also ideal where underground infrastructure requires protection from external corrosive compounds, such as salt.
Independent wet and dry tests carried out by Devon CC Materials Laboratory showed that Fibrelite trench covers – even when wet – had anti-slip properties equivalent to a modern high grade road surface – far exceeding health and safety advisory limits.
The thermal gradient properties of a composite steam cover significantly reduces the heat transfer from a steam vault to the surface of the cover. Typically, the surface temperature of a composite cover is only slightly above ambient temperature, even when subjected to extremely hot temperatures on the underside.
In fact, Fibrelite’s high-quality steam covers maintain their cool-to-touch properties and ability to support vehicular loads, even when pushed to a test temperature of 400°F.
“…I think Fibrelite is a great solution to a difficult design problem for us, of achieving both a robust and high load capacity cover to the multicore cables running from stage to control desk whilst maintaining low weight and easy access.”
Jonathan Size, Foster Wilson Architects
Fibrelite’s composite covers are available in almost any size, colour, shape and configuration, providing a truly bespoke, made-to-measure solution for every project.
“Dakin Contractors have worked with Fibrelite for over 20 years now and we are happy to recommend Fibrelite to any company looking to utilise their services. We have always found Fibrelite to be the leader in their market…a company driven by providing a product and a service that their customers desire and are constantly striving to improve their product in response to customer feedback. Fibrelite provide top class products at competitive prices and back their products up with an excellent on-site service.”
Contracts Manager, Dakin Contractors
As well as being lightweight – typically a third of the weight of an equivalent-size cover produced in metal or concrete, Fibrelite’s ergonomically-designed lifting aid also eliminates the risk of back injury and crushed fingers.
Potential electrostatic discharging can be eliminated by using our “fully conductive” covers. We use a metallised fibre within the moulding process to achieve electrical continuity across the entire surface of the cover – and exceed the surface resistivity requirements of PAS26.
While the standard calls out for a maximum value of 1 KΩ/cm²; Fibrelite covers actually achieve a value of 0.0144 KΩ/cm².
Fibrelite has held accreditation to the ISO quality standard (ISO 9001:2008) and British Standards Kitemark since 1998. This commitment to product excellence enables us to provide the most comprehensive range of high strength modular and custom-made trench covers, with the very best strength-to-weight ratio available in the market today.
An 18” square, raised cover manufactured and supplied by Fibrelite was put through testing as specified in BS EN 124 after 14 years solid service on a high-traffic forecourt. The test report confirms the cover easily passed and it was notable that the orange colour had not faded, indicating that weathering and UV have no or very little impact on the performance of the Fibrelite cover over a sustained period.
There is no risk of theft with a Fibrelite composite cover as composites have no resale value in the scrap market – so you won’t be left with a dangerous, uncovered hole in the ground.
Here’s a quick round up of some of the recent Fibrelite stories which have made the news around the world. To read more click here.
Read more about our trench cover installations for water facilities:
Read more about our trench cover installations in a US Data Centre:
Read more about our recent manufacturing performance:
The Ultimate in Composite Engineering