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The UK's leading supplier of industrial floor paints, repair materials and anti slip products

GRP/Firm-Step® Range


 Watco GRP Step Covers

New Watco Firm-Step® Standard Stair Treads

 Heavy Duty Stair Tread

New Watco Firm-Step® Heavy Duty Stair Treads

 Precision Stair Tread

New Watco Firm-Step® Precision Stair Treads

 Watco GRP Decking Strips

Watco GRP Decking Strips

 Watco GRP Standard Access Ramp

Watco GRP Standard Access Ramp

 Watco GRP Threshold Ramp

Watco GRP Threshold Ramp

 Watco GRP Grating

Watco Firm-Step® Grating

 Watco Anti Slip GRP Treads

Watco Anti Slip GRP Treads

 Watco Anti Slip GRP Sheet

New Watco Anti Slip Firm-Step® Standard Sheet

 Heavy Duty Sheet

New Watco Anti Slip Firm-Step® Heavy Duty Sheet


Watco Tactle Plates

 Watco GRP Step Riser Plates

Watco Firm-Step® Step Riser Plates

 Watco GRP Ladder Rungs

Watco GRP Ladder Rungs

 Watco Safety Edge GRP

Watco Firm-Step® Edge

 GRP Duckboard

Watco Firm-Step® GRP Duckboard

 Watco Permaline GRP

Watco Permaline GRP



Product Overview


Watco offer a wide range of virtually indestructible slip resistant surfaces. Our GRP range is based on an extremely durable fibreglass base with a coarse, ceramic grit which is bonded to the top for a heavy duty, slip resistant surface.


        • All items preformed – just fix in place


              • Excellent slip resistance even in the wet


                    • Step covers with high visibility nosing


                          • Anti-slip sheets for use on ramps or around machinery


                          • Use inside and out oil and chemical resistant


                          • Will not rot or warp


                          • Comprehensive range of standard sizes – all direct from stock


                          • Cut to size service – usually within two days with no cutting charge


                          • Glue or screw fix


                          • Ideal for wet or weak substrates which cannot be adequately prepared for paint


                          • Helps meet the requirements of the DDA and 2004 Building Regulations


                          • Custom sizes and colours are available




Instructions for Use


These items are generally glued and screw fixed. Watco Adhesive Mastic is ideal since it will make up minor deviations in the substrate and prevent the GRP drumming or rocking. Watco Adhesive Mastic should be applied to sound, clean dry surfaces if it is to be the only method of fixing in lightly trafficked areas. If application is to damp, dirty or friable surfaces or in very cold weather, use Watco Adhesive Mastic to bed the GRP item into place and then always screw fix. Screw fixings are generally made at about 600mm intervals. Drilling through the GRP is easy using a standard twist drill suitable for wood or metal. Countersinking is not required (see below). Screw fixing should also be used if the GRP is likely to be trafficked before the Watco Adhesive Mastic has set.




A good quality abrasive disc, jigsaw or hacksaw can be used for trimming. The GRP material is quite tough to cut by hand, so if power tools are not readily available, please ask about our cut to size service.




If mechanical fixing is required, the following may be used as a guide.

To timber: No.8 x 30mm zinc plated or stainless steel screws.

To steel plate: No.8 x 20mm self-tapping pan head Pozi stainless steel screws or No.8 x 20mm self drilling pan head Philips zinc plated screws.

To concrete: No.8 x 30mm zinc plated or stainless steel impact anchors (Hilti HPS-1 or similar).

To open mesh: Stainless steel or zinc plated saddle clips and domed head bolts suitable in length for the depth of the existing treads.




When drilling holes in the GRP we do not recommend countersinking. When the screw is screwed down firmly, the screw head becomes embedded in the surface texture. The top of the screw head should be flush with the surrounding surface and therefore not present a trip hazard.


Preparation and Installation


Instructions are displayed on the datasheets and the Application and Preparation tab on the product webpage.


Installation Service


For larger projects we offer a nationwide installation service on Watco Anti Slip GRP Sheet, Watco GRP Landing Cover, Watco Safety Edge GRP and Watco Firm-Step® Covers. All installers hold full CSCS cards and are fully PTS trained. Following a site survey, a detailed Methods Statement and Risk Assessment will be produced and presented for client appoval prior to the commencement of any installation works.


For more details please contact us on 01483 418 418


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Watco UK Ltd, Watco House, Filmer Grove, Godalming, Surrey GU7 3AL

Company Registered in England – Number 459144. VAT number 413208691. Registered office: Hays Galleria, 1 Hays Lane, London, SE1 2RD

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