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Fibreglass Gully Covers offer incredible strength to weight ratio & are easily removed for access

Dura Slab 40mm thickness x 500mm wide.

Length to suit span. (Interlocking joining system.)

Dura Slab 45mm thickness x 700mm wide.

Length to suit span. (Half lap joining system.)

Dura Slab 48mm thickness x 475mm wide.

Length to suit span. (Half lap joining system.)

Dura Slab 75mm thickness x 500mm wide.

Length to suit span. (Half lap joining system.)

Dura Slab 100mm thickness x 500mm wide. Length to suit span. (Half lap joining system.)

Dura Slab 150mm thickness x 500mm wide.

Length to suit span. (Half lap joining system.)

Dura Slab 200mm thickness x 500mm wide.

Length to suit span. (Half lap joining system.)

Joining Method

Illustration shows how the half lap trench covers join together allowing easy removal for maintenance access.

Type 100 Draining

Dura Slab Type 100 mm thickness. Length and width according to customer specifications. Various other Dura Slab products are available to suit specific requirements.

British Standard Compliant

Dura Slab can be BS EN 124 approved. This European standard applies to gully tops and manhole tops for vehicular and pedestrian areas. In order to reach this approval, a Dura Slab panel is subjected to a repeated load as per BS EN 124 standards. The test is continued to evaluate absolute failure

Dura Slab undergoing BS EN 124 testing.

Dura Slab Load Capacities

Ultimate Failure Loads (kN)

ProductWidthKg/sqmLoad Type500mm600mm750mm1000mm1200mm1500mm2000mm2500mm3000mm
Type 40 Light500mm17.2Point594935302825211210
Type 45700mm23.6Point707070748570654336
Type 50475mm43.7Point16814413512512591685445
Type 75 (in development)600mm62.0Point30530429428623819014210885
Type 100600mm82.4Point405405380345330311295240200


BS EN 124 Classification met by span

ProductWidthKg/sqmLoad Type500mm600mm750mm1000mm1200mm1500mm2000mm2500mm3000mm
Type 40 Light500mm17.2PointAAAAAAAnana
Type 45700mm23.6PointAAAAAAAAA
Type 50475mm43.7PointBBBBBAAAA
Type 75 (in development)600mm62.0PointCCCCBBBAA
Type 100600mm82.4PointDDCCCCCBB


All data is theoretical. A safety factor of 2.5 has been used to determine which BS EN 124 Classification can be met at each span.

Dura Slab Manufacturing Process


Glassfibre rovings and matting reinforcement


Chemical grade resin dip bath


Final pultruded resin glassfibre Dura Slab

Pultruded Dura Slab Profiles are manufactured by combining various resins with pure glassfibre reinforcement. They are formed and cured in a continuous process creating a product of extraordinary strength and resilience. The resultant profile offers a combination of benefits and mechanical properties exceeding those of metal. Weighing up to 80% less than steel and concrete, Dura Slab offers equivalent performance for considerably less weight. This results in major weight savings and lower installation and servicing removal costs due to more economical transportation, handling and on site positioning. The high strength to weight ratio has particular relevance for many applications in the structural flooring, trench, gully and duct cover industries.

Dura Slab Fixing Systems

Fixing types


– Nut and bolt

– Fischer Rawlbolts

– Coach screw (Anti-tamper available)


Securing Methods


– Recessed collar

– Counter sunk

– Dome head bolt and washer

Lifting Systems

Lifting Systems

– T-Bar lifting handles

– Lifting Eyes (can suit 1,2 or 4 man lift)


  • Gully Covers
  • Duct Covers
  • Trench Covers
  • Industrial Flooring
  • Work Platforms
  • Service Duct Covers
  • Bridge Decks
  • Tank Covers
  • Chemical Plant Flooring
  • Balcony Flooring
  • Cable Duct Covers


  • Anti-Slip surface
  • Light Weight
  • High Strength
  • Fast Installation
  • Health & Safety compliant
  • Allows easy access
  • Anti Corrosive
  • Fire Resistant
  • Impact Resistant
  • Zero Maintenance
  • Suits 1 or 2 Men Lift

British Standard Test Results

The B.S. 4592 test was devised to test and assess the slip resistance of industrial type flooring intended for use in water and wet areas. A co-efficient of friction (CoF) is calculated by determining the mean angle of inclination that an operator can safely maintain when the flooring is subjected to a continuous stream of water.


Standard colours are Green and Grey, other RAL colours available on request for volume orders.

Dark Green
RAL 6010
Light Grey
RAL 7047

Note: Due to the printing process colours shown are a guide only.